IS42S16100
512K Words x 16 Bits x 2 Banks (16-MBIT) SYNCHRONOUS DYNAMIC RAM
FEATURES
* Clock frequency: 166, 143, 125, 100 MHz * Fully synchronous; all signals referenced to a positive clock edge * Two banks can be operated simultaneously and independently * Dual internal bank controlled by A11 (bank select) * Single 3.3V power supply * LVTTL interface * Programmable burst length - (1, 2, 4, 8, full page) * Programmable burst sequence: Sequential/Interleave * Auto refresh, self refresh * 4096 refresh cycles every 128 ms * Random column address every clock cycle * Programmable CAS latency (2, 3 clocks) * Burst read/write and burst read/single write operations capability * Burst termination by burst stop and precharge command * Byte controlled by LDQM and UDQM * Package 400-mil 50-pin TSOP II
ISSI
SEPTEMBER 2000
(R)
DESCRIPTION ISSI's 16Mb Synchronous DRAM IS42S16100 is organized
as a 524,288-word x 16-bit x 2-bank for improved performance. The synchronous DRAMs achieve high-speed data transfer using pipeline architecture. All inputs and outputs signals refer to the rising edge of the clock input.
PIN CONFIGURATIONS
50-Pin TSOP (Type II)
VCC I/O0 I/O1 GNDQ I/O2 I/O3 VCCQ I/O4 I/O5 GNDQ I/O6 I/O7 VCCQ LDQM WE CAS RAS CS A11 A10 A0 A1 A2 A3 VCC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 GND I/O15 I/O14 GNDQ I/O13 I/O12 VCCQ I/O11 I/O10 GNDQ I/O9 I/O8 VCCQ NC UDQM CLK CKE NC A9 A8 A7 A6 A5 A4 GND
PIN DESCRIPTIONS
A0-A11 A0-A10 A11 A0-A7 I/O0 to I/O15 CLK CKE CS RAS Address Input Row Address Input Bank Select Address Column Address Input Data I/O System Clock Input Clock Enable Chip Select Row Address Strobe Command CAS WE LDQM UDQM Vcc GND VccQ GNDQ NC Column Address Strobe Command Write Enable Lower Bye, Input/Output Mask Upper Bye, Input/Output Mask Power Ground Power Supply for I/O Pin Ground for I/O Pin No Connection
ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors which may appear in this publication. (c) Copyright 2000, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
1
IS42S16100
PIN FUNCTIONS
Pin No. 20 to 24 27 to 32 Symbol A0-A10 Type Input Pin Function (In Detail)
ISSI
(R)
19
A11
Input Pin
16 34
CAS CKE
Input Pin Input Pin
35 18
CLK CS
Input Pin Input Pin
2, 3, 5, 6, 8, 9, 11 I/O0 to 12, 39, 40, 42, 43, I/O15 45, 46, 48, 49 14, 36 LDQM, UDQM
I/O Pin
A0 to A10 are address inputs. A0-A10 are used as row address inputs during active command input and A0-A7 as column address inputs during read or write command input. A10 is also used to determine the precharge mode during other commands. If A10 is LOW during precharge command, the bank selected by A11 is precharged, but if A10 is HIGH, both banks will be precharged. When A10 is HIGH in read or write command cycle, the precharge starts automatically after the burst access. These signals become part of the OP CODE during mode register set command input. A11 is the bank selection signal. When A11 is LOW, bank 0 is selected and when high, bank 1 is selected. This signal becomes part of the OP CODE during mode register set command input. CAS, in conjunction with the RAS and WE, forms the device command. See the "Command Truth Table" item for details on device commands. The CKE input determines whether the CLK input is enabled within the device. When is CKE HIGH, the next rising edge of the CLK signal will be valid, and when LOW, invalid. When CKE is LOW, the device will be in either the power-down mode, the clock suspend mode, or the self refresh mode. The CKE is an asynchronous input. CLK is the master clock input for this device. Except for CKE, all inputs to this device are acquired in synchronization with the rising edge of this pin. The CS input determines whether command input is enabled within the device. Command input is enabled when CS is LOW, and disabled with CS is HIGH. The device remains in the previous state when CS is HIGH. I/O0 to I/O15 are I/O pins. I/O through these pins can be controlled in byte units using the LDQM and UDQM pins. LDQM and UDQM control the lower and upper bytes of the I/O buffers. In read mode, LDQM and UDQM control the output buffer. When LDQM or UDQM is LOW, the corresponding buffer byte is enabled, and when HIGH, disabled. The outputs go to the HIGH impedance state when LDQM/UDQM is HIGH. This function corresponds to OE in conventional DRAMs. In write mode, LDQM and UDQM control the input buffer. When LDQM or UDQM is LOW, the corresponding buffer byte is enabled, and data can be written to the device. When LDQM or UDQM is HIGH, input data is masked and cannot be written to the device. RAS, in conjunction with CAS and WE, forms the device command. See the "Command Truth Table" item for details on device commands. WE, in conjunction with RAS and CAS, forms the device command. See the "Command Truth Table" item for details on device commands. VCCQ is the output buffer power supply. VCC is the device internal power supply. GNDQ is the output buffer ground. GND is the device internal ground.
Input Pin
17 15 7, 13, 38, 44 1, 25 4, 10, 41, 47 26, 50
RAS WE VCCQ VCC GNDQ GND
Input Pin Input Pin Power Supply Pin Power Supply Pin Power Supply Pin Power Supply Pin
2
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
FUNCTIONAL BLOCK DIAGRAM
ISSI
ROW DECODER
(R)
CLK CKE CS RAS CAS WE A11
COMMAND DECODER & CLOCK GENERATOR
MODE REGISTER
11
11
ROW ADDRESS BUFFER
MEMORY CELL ARRAY
2048
11
BANK 0
DQM
SENSE AMP I/O GATE
A10
8
COLUMN ADDRESS BUFFER
BURST COUNTER
COLUMN ADDRESS LATCH
DATA IN BUFFER
16 16
256
COLUMN DECODER
ROW DECODER
MULTIPLEXER
A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
REFRESH CONTROLLER
SELF REFRESH CONTROLLER
I/O 0-15
8
256
SENSE AMP I/O GATE
REFRESH COUNTER
DATA OUT BUFFER
16 16
11
ROW ADDRESS LATCH
11
ROW ADDRESS BUFFER
2048
MEMORY CELL ARRAY
Vcc/VccQ GND/GNDQ
BANK 1
11
S16BLK.eps
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
3
IS42S16100
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC MAX VCCQ MAX VIN VOUT PD MAX ICS TOPR TSTG Parameters Maximum Supply Voltage Maximum Supply Voltage for Output Buffer Input Voltage Output Voltage Allowable Power Dissipation Output Shorted Current Operating Temperature Storage Temperature Rating -1.0 to +4.6 -1.0 to +4.6 -1.0 to +4.6 -1.0 to +4.6 1 50 0 to +70 -55 to +150 Unit V V V V W mA C C
ISSI
(R)
DC RECOMMENDED OPERATING CONDITIONS(2) (At TA = 0 to +70C)
Symbol VCC, VCCQ VIH VIL Parameter Supply Voltage Input High Voltage(3) Input Low Voltage(4) Min. 3.0 2.0 -0.3 Typ. 3.3 -- -- Max. 3.6 VDD + 0.3 +0.8 Unit V V V
CAPACITANCE CHARACTERISTICS(1,2) (At TA = 0 to +25C, Vcc = VccQ = 3.3 0.3V, f = 1 MHz)
Symbol CIN1 CIN2 CI/O Parameter Input Capacitance: A0-A11 Input Capacitance: (CLK, CKE, CS, RAS, CAS, WE, LDQM, UDQM) Data Input/Output Capacitance: I/O0-I/O15 Typ. -- -- -- Max. 4 4 5 Unit pF pF pF
Notes: 1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. All voltages are referenced to GND. 3. VIH (max) = VCCQ + 2.0V with a pulse width 3 ns. 4. VIL (min) = GND - 2.0V with a pulse < 3 ns and -1.5V with a pulse < 5ns.
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Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
Test Condition 0V VIN VCC, with pins other than the tested pin at 0V Output is disabled 0V VOUT VCC IOUT = -2 mA IOUT = +2 mA One Bank Operation, Burst Length=1 tRC tRC (min.) IOUT = 0mA CKE VIL (MAX) CKE VIH (MIN) CKE VIL (MAX) CKE VIH (MIN) tCK = tCK (MIN) IOUT = 0mA CAS latency = 3 -6 -7 -8 -10 -- -- -- -- -- -- -- -- -6 -7 -8 -10 -6 -7 -8 -10 -6 -7 -8 -10 -6 -7 -8 -10 -- Speed Min. -5 -5 2.4 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- Max. 5 5 -- 0.4 190 160 140 120 3 2 30 6 3 2 40 15 210 180 160 140 210 180 160 140 210 180 160 140 210 180 160 140 1 Unit A A V V mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA mA
(R)
DC ELECTRICAL CHARACTERISTICS (Recommended Operation Conditions unless otherwise noted.)
Symbol Parameter IIL IOL VOH VOL ICC1 Input Leakage Current Output Leakage Current Output High Voltage Level Output Low Voltage Level Operating Current(1,2)
ICC2P ICC2PS ICC2N ICC2NS ICC3P ICC3PS ICC3N ICC3NS ICC4
Precharge Standby Current (In Power-Down Mode) Precharge Standby Current (In Non Power-Down Mode) Active Standby Current (In Power-Down Mode) Active Standby Current (In Non Power-Down Mode) Operating Current (In Burst Mode)(1)
tCK = tCK (MIN) tCK = tCK = tCK (MIN) tCK = tCK = tCK (MIN) tCK = tCK = tCK (MIN) tCK = CAS latency = 3
CAS latency = 2
ICC5
Auto-Refresh Current
tRC = tRC (MIN)
CAS latency = 3
CAS latency = 2
ICC6
Self-Refresh Current
CKE 0.2V
Notes: 1. These are the values at the minimum cycle time. Since the currents are transient, these values decrease as the cycle time increases. Also note that a bypass capacitor of at least 0.01 F should be inserted between Vcc and GND for each memory chip to suppress power supply voltage noise (voltage drops) due to these transient currents. 2. Icc1 and Icc4 depend on the output load. The maximum values for Icc1 and Icc4 are obtained with the output open state.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
5
IS42S16100
AC CHARACTERISTICS(1,2,3)
-6 Symbol tCK3 tCK2 tAC3 tAC2 tCHI tCL tOH3 tOH2 tLZ tHZ3 tHZ2 tDS tDH tAS tAH tCKS tCKH tCKA tCS tCH tRC tRAS tRP tRCD tRRD tDPL3 tDPL2 tDAL3 tDAL2 tT tREF Parameter Clock Cycle Time Access Time From CLK(4) CLK HIGH Level Width CLK LOW Level Width Output Data Hold Time Output LOW Impedance Time Output HIGH Impedance Time(5) CAS Latency = 3 CAS Latency = 2 CAS Latency = 3 CAS Latency = 2 Min. Max. Min. 6 -- 8 -- -- 5.5 -- 6 2 -- 2 -- 2.5 -- 2.5 -- 0 -- -- 5.5 -- 6 2 -- 1 -- 2 -- 1 -- 2 -- 1 -- 1CLK+3 -- 2 -- 1 -- 60 -- 42 100,000 18 -- 16 -- 12 -- 1CLK -- 1CLK 1CLK+tRP 1CLK+tRP 1 -- -- -- -- 10 128 -7
ISSI
Max. 7 -- 8.6 -- -- 6 -- 6 2.5 -- 2.5 -- 2.5 -- 2.5 -- 0 -- -- 6 -- 6 2 -- 1 -- 2 -- 1 -- 2 -- 1 -- 1CLK+3 -- 2 -- 1 -- 63 -- 42 100,000 20 -- 16 -- 14 -- 1CLK -- 1CLK 1CLK+tRP 1CLK+tRP 1 -- -- -- -- 10 128
(R)
Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ms
CAS Latency = 3 CAS Latency = 2 CAS Latency = 3 CAS Latency = 2
Input Data Setup Time Input Data Hold Time Address Setup Time Address Hold Time CKE Setup Time CKE Hold Time CKE to CLK Recovery Delay Time Command Setup Time (CS, RAS, CAS, WE, DQM) Command Hold Time (CS, RAS, CAS, WE, DQM) Command Period (REF to REF / ACT to ACT) Command Period (ACT to PRE) Command Period (PRE to ACT) Active Command To Read / Write Command Delay Time Command Period (ACT [0] to ACT[1]) Input Data To Precharge CAS Latency = 3 Command Delay time CAS Latency = 2 Input Data To Active / Refresh CAS Latency = 3 Command Delay time (During Auto-Precharge) CAS Latency = 2 Transition Time Refresh Cycle Time (4096)
Notes: 1. When power is first applied, memory operation should be started 100 s after Vcc and VccQ reach their stipulated voltages. Also note that the power-on sequence must be executed before starting memory operation. 2. Measured with tT = 1 ns. 3. The reference level is 1.4 V when measuring input signal timing. Rise and fall times are measured between VIH (min.) and VIL (max.). 4. Access time is measured at 1.4V with the load shown in the figure below. 5. The time tHZ (max.) is defined as the time required for the output voltage to transition by 200 mV from VOH (min.) or VOL (max.) when the output is in the high impedance state.
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Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
AC CHARACTERISTICS(1,2,3)
-8 Symbol tCK3 tCK2 tAC3 tAC2 tCHI tCL tOH3 tOH2 tLZ tHZ3 tHZ2 tDS tDH tAS tAH tCKS tCKH tCKA tCS tCH tRC tRAS tRP tRCD tRRD tDPL3 tDPL2 tDAL3 tDAL2 tT tREF Parameter Clock Cycle Time Access Time From CLK(4) CLK HIGH Level Width CLK LOW Level Width Output Data Hold Time Output LOW Impedance Time Output HIGH Impedance Time(5) CAS Latency = 3 CAS Latency = 2 CAS Latency = 3 CAS Latency = 2 Min. Max. Min. 8 -- 10 -- -- 6 -- 7 3 -- 3 -- 2.5 -- 2.5 -- 0 -- -- 6 -- 7 2.5 -- 1 -- 2.5 -- 1 -- 2.5 -- 1 -- 1CLK+3 -- 2.5 -- 1 -- 68 -- 48 100,000 20 -- 20 -- 16 -- 1CLK -- 1CLK 1CLK+tRP 1CLK+tRP 1 -- -- -- -- 10 128 -10
ISSI
Max. 10 -- 10 -- -- 7 -- 9 3.5 -- 3.5 -- 2.5 -- 2.5 -- 0 -- -- 7 -- 9 2.5 -- 1 -- 2.5 -- 1 -- 2.5 -- 1 -- 1CLK+3 -- 2.5 -- 1 -- 70 -- 50 100,000 20 -- 20 -- 20 -- 1CLK -- 1CLK 1CLK+tRP 1CLK+tRP 1 -- -- -- -- 10 128
(R)
Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ms
CAS Latency = 3 CAS Latency = 2 CAS Latency = 3 CAS Latency = 2
Input Data Setup Time Input Data Hold Time Address Setup Time Address Hold Time CKE Setup Time CKE Hold Time CKE to CLK Recovery Delay Time Command Setup Time (CS, RAS, CAS, WE, DQM) Command Hold Time (CS, RAS, CAS, WE, DQM) Command Period (REF to REF / ACT to ACT) Command Period (ACT to PRE) Command Period (PRE to ACT) Active Command To Read / Write Command Delay Time Command Period (ACT [0] to ACT[1]) Input Data To Precharge CAS Latency = 3 Command Delay time CAS Latency = 2 Input Data To Active / Refresh CAS Latency = 3 Command Delay time (During Auto-Precharge) CAS Latency = 2 Transition Time Refresh Cycle Time
Notes: 1. When power is first applied, memory operation should be started 100 s after Vcc and VccQ reach their stipulated voltages. Also note that the power-on sequence must be executed before starting memory operation. 2. Measured with tT = 1 ns. 3. The reference level is 1.4 V when measuring input signal timing. Rise and fall times are measured between VIH (min.) and VIL (max.). 4. Access time is measured at 1.4V with the load shown in the figure below. 5. The time tHZ (max.) is defined as the time required for the output voltage to transition by 200 mV from VOH (min.) or VOL (max.) when the output is in the high impedance state.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
7
IS42S16100
OPERATING FREQUENCY / LATENCY RELATIONSHIPS
SYMBOL -- -- tCAC tRCD tRAC tRC tRAS tRP tRRD tCCD tDPL tDAL tRBD tWBD tRQL tWDL tPQL tQMD tDMD tMCD PARAMETER Clock Cycle Time Operating Frequency CAS Latency Active Command To Read/Write Command Delay Time RAS Latency (tRCD + tCAC) Command Period (REF to REF / ACT to ACT) Command Period (ACT to PRE) Command Period (PRE to ACT) Command Period (ACT[0] to ACT [1]) Column Command Delay Time (READ, READA, WRIT, WRITA) Input Data To Precharge Command Delay Time Input Data To Active/Refresh Command Delay Time (During Auto-Precharge) Burst Stop Command To Output in HIGH-Z Delay Time (Read) Burst Stop Command To Input in Invalid Delay Time (Write) Precharge Command To Output in HIGH-Z Delay Time (Read) Precharge Command To Input in Invalid Delay Time (Write) Last Output To Auto-Precharge Start Time (Read) DQM To Output Delay Time (Read) DQM To Input Delay Time (Write) Mode Register Set To Command Delay Time -6 6 166 3 3 6 9 6 3 3 1 1 4 3 0 3 0 -2 2 0 2 -7 7 143 3 3 6 9 6 3 3 1 1 4 3 0 3 0 -1 2 0 2 -8. 8 125 3 3 6 9 6 3 3 1 1 4 3 0 3 0 -2 2 0 2
ISSI
-10. 10 100 3 3 6 9 6 3 3 1 1 4 3 0 3 0 -1 2 0 2 UNITS ns MHz cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle cycle
(R)
AC TEST CONDITIONS (Input/Output Reference Level: 1.4V) Input
tCHI
2.0V
tCK tCL
CLK
1.4V 0.8V
tCS
2.0V
tCH
INPUT
1.4V 0.8V
tOH OUTPUT
1.4V
tAC
1.4V
Output Load
I/O 50 pF
50 +1.4V
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Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
COMMANDS Active Command
CLK CKE CS RAS CAS WE A0-A9 A10
ROW HIGH
ISSI
Read Command
CLK CKE CS RAS CAS WE A0-A9 A10
NO PRECHARGE BANK 1 BANK 1 COLUMN (1) AUTO PRECHARGE ROW HIGH
(R)
A11
BANK 0
A11
BANK 0
Write Command
CLK CKE CS RAS CAS WE A0-A9 A10
NO PRECHARGE BANK 1 COLUMN(1) AUTO PRECHARGE HIGH
Precharge Command
CLK CKE CS RAS CAS WE A0-A9
BANK 0 AND BANK 1 HIGH
A10
BANK 0 OR BANK 1 BANK 1
A11
BANK 0
A11
BANK 0
Notes: 1. A8-A9 = Don't Care.
Don't Care
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
9
IS42S16100
COMMANDS (cont.) No-Operation Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
HIGH
ISSI
Device Deselect Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
HIGH
(R)
Mode Register Set Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
OP-CODE HIGH
Auto-Refresh Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
HIGH
OP-CODE
OP-CODE
Don't Care
10
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
COMMANDS (cont.) Self-Refresh Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
ISSI
Power Down Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
NOP
ALL BANKS IDLE
(R)
NOP
NOP
NOP
Clock Suspend Command
CLK CKE CS RAS CAS WE A0-A9 A10 A11
NOP
BANK(S) ACTIVE
Burst Stop Command
CLK CKE
HIGH
NOP
CS RAS CAS WE A0-A9 A10 A11
NOP
NOP
Don't Care
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
11
IS42S16100
Mode Register Set Command
(CS, RAS, CAS, WE = LOW) The IS42S16100 product incorporates a register that defines the device operating mode. This command functions as a data input pin that loads this register from the pins A0 to A11. When power is first applied, the stipulated power-on sequence should be executed and then the IS42S16100 should be initialized by executing a mode register set command. Note that the mode register set command can be executed only when both banks are in the idle state (i.e. deactivated). Another command cannot be executed after a mode register set command until after the passage of the period tMCD, which is the period required for mode register set command execution.
ISSI
(R)
When the A10 pin is HIGH, this command functions as a read with auto-precharge command. After the burst read completes, the bank selected by pin A11 is precharged. When the A10 pin is LOW, the bank selected by the A11 pin remains in the activated state after the burst read completes.
Write Command
(CS, CAS, WE = LOW, RAS = HIGH) When burst write mode has been selected with the mode register set command, this command selects the bank specified by the A11 pin and starts a burst write operation at the start address specified by pins A0 to A9. This first data must be input to the I/O pins in the cycle in which this command. The selected bank must be activated before executing this command. When A10 pin is HIGH, this command functions as a write with auto-precharge command. After the burst write completes, the bank selected by pin A11 is precharged. When the A10 pin is low, the bank selected by the A11 pin remains in the activated state after the burst write completes. After the input of the last burst write data, the application must wait for the write recovery period (tDPL, tDAL) to elapse according to CAS latency.
Active Command
(CS, RAS = LOW, CAS, WE= HIGH) The IS42S16100 includes two banks of 4096 rows each. This command selects one of the two banks according to the A11 pin and activates the row selected by the pins A0 to A10. This command corresponds to the fall of the RAS signal from HIGH to LOW in conventional DRAMs.
Precharge Command
(CS, RAS, WE = LOW, CAS = HIGH) This command starts precharging the bank selected by pins A10 and A11. When A10 is HIGH, both banks are precharged at the same time. When A10 is LOW, the bank selected by A11 is precharged. After executing this command, the next command for the selected bank(s) is executed after passage of the period tRP, which is the period required for bank precharging. This command corresponds to the RAS signal from LOW to HIGH in conventional DRAMs
Auto-Refresh Command
(CS, RAS, CAS = LOW, WE, CKE = HIGH) This command executes the auto-refresh operation. The row address and bank to be refreshed are automatically generated during this operation. Both banks must be placed in the idle state before executing this command. The stipulated period (tRC) is required for a single refresh operation, and no other commands can be executed during this period. The device goes to the idle state after the internal refresh operation completes. This command must be executed at least 4096 times every 128 ms. This command corresponds to CBR auto-refresh in conventional DRAMs.
Read Command
(CS, CAS = LOW, RAS, WE = HIGH) This command selects the bank specified by the A11 pin and starts a burst read operation at the start address specified by pins A0 to A9. Data is output following CAS latency. The selected bank must be activated before executing this command.
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Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
Self-Refresh Command
(CS, RAS, CAS, CKE = LOW, WE = HIGH) This command executes the self-refresh operation. The row address to be refreshed, the bank, and the refresh interval are generated automatically internally during this operation. The self-refresh operation is started by dropping the CKE pin from HIGH to LOW. The self-refresh operation continues as long as the CKE pin remains LOW and there is no need for external control of any other pins. The self-refresh operation is terminated by raising the CKE pin from LOW to HIGH. The next command cannot be executed until the device internal recovery period (tRC) has elapsed. After the self-refresh, since it is impossible to determine the address of the last row to be refreshed, an auto-refresh should immediately be performed for all addresses (4096 cycles). Both banks must be placed in the idle state before executing this command.
ISSI
Power-Down Command
(CKE = LOW)
(R)
When both banks are in the idle (inactive) state, or when at least one of the banks is not in the idle (inactive) state, this command can be used to suppress device power dissipation by reducing device internal operations to the absolute minimum. Power-down mode is started by dropping the CKE pin from HIGH to LOW. Power-down mode continues as long as the CKE pin is held low. All pins other than the CKE pin are invalid and none of the other commands can be executed in this mode. The power-down operation is terminated by raising the CKE pin from LOW to HIGH. The next command cannot be executed until the recovery period (tCKA) has elapsed. Since this command differs from the self-refresh command described above in that the refresh operation is not performed automatically internally, the refresh operation must be performed within the refresh period (tREF). Thus the maximum time that power-down mode can be held is just under the refresh cycle time.
Burst Stop Command
(CS, WE, = LOW, RAS, CAS = HIGH) The command forcibly terminates burst read and write operations. When this command is executed during a burst read operation, data output stops after the CAS latency period has elapsed.
Clock Suspend
(CKE = LOW) This command can be used to stop the device internal clock temporarily during a read or write cycle. Clock suspend mode is started by dropping the CKE pin from HIGH to LOW. Clock suspend mode continues as long as the CKE pin is held LOW. All input pins other than the CKE pin are invalid and none of the other commands can be executed in this mode. Also note that the device internal state is maintained. Clock suspend mode is terminated by raising the CKE pin from LOW to HIGH, at which point device operation restarts. The next command cannot be executed until the recovery period (tCKA) has elapsed. Since this command differs from the self-refresh command described above in that the refresh operation is not performed automatically internally, the refresh operation must be performed within the refresh period (tREF). Thus the maximum time that clock suspend mode can be held is just under the refresh cycle time.
No Operation
(CS, = LOW, RAS, CAS, WE = HIGH) This command has no effect on the device.
Device Deselect Command
(CS = HIGH) This command does not select the device for an object of operation. In other words, it performs no operation with respect to the device.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
13
IS42S16100
COMMAND TRUTH TABLE(1,2)
Symbol MRS REF SREF PRE PALL ACT WRIT WRITA READ READA BST NOP DESL SBY ENB MASK Command Mode Register Set(3,4) Auto-Refresh(5) Self-Refresh(5,6) Precharge Selected Bank Precharge Both Banks Bank Activate(7) Write Write With Auto-Precharge(8) Read(8) Read With Auto-Precharge(8) Burst Stop(9) No Operation Device Deselect Clock Suspend / Standby Mode Data Write / Output Enable Data Mask / Output Disable CKE n-1 n H H H H H H H H H H H H H L H H X H L X X X X X X X X X X X X X CS L L L L L L L L L L L L H X X X RAS CAS L L L L L L H H H H H H X X X X L L L H H H L L L L H H X X X X WE DQM L H H L L H L L H H L H X X X X X X X X X X X X X X X X X X L H A11 A10 X X BS X BS BS BS BS BS X X X X X X
ISSI
A9-A0 I/On OP CODE X X X X L X H X Row Row L Column(18) H Column(18) L Column(18) H Column(18) X X X X X X X X X X X X
(R)
X HIGH-Z HIGH-Z X X X X X X X X X X X Active HIGH-Z
DQM TRUTH TABLE(1,2)
Symbol ENB MASK ENBU ENBL MASKU MASKL Command Data Write / Output Enable Data Mask / Output Disable Upper Byte Data Write / Output Enable Lower Byte Data Write / Output Enable Upper Byte Data Mask / Output Disable Lower Byte Data Mask / Output Disable CKE n-1 n H H H H H H X X X X X X DQM UPPER LOWER L H L X H X L H X L X H
CKE TRUTH TABLE(1,2)
Symbol SPND -- -- REF SELF SELFX PDWN -- Command Start Clock Suspend Mode Clock Suspend Terminate Clock Suspend Mode Auto-Refresh Start Self-Refresh Mode Terminate Self-Refresh Mode Start Power-Down Mode Terminate Power-Down Mode Current State Active Other States Clock Suspend Idle Idle Self-Refresh Idle Power-Down CKE n-1 n H L L H H L L H H L L L H H L H H L L H CS X X X L L L H L H X RAS CAS X X X L L H X H X X X X X L L H X H X X WE X X X H H H X H X X A11 A10 A9-A0 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
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IS42S16100
OPERATION COMMAND TABLE(1,2)
Current State Command Idle DESL NOP BST READ / READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Operation No Operation or Power-Down No Operation or Power-Down(12) No Operation or Power-Down Illegal Illegal Row Active No Operation Auto-Refresh or Self-Refresh(13) Mode Register Set No Operation No Operation No Operation Read Start(17) Write Start(17) Illegal(10) Precharge(15) Illegal Illegal Burst Read Continues, Row Active When Done Burst Read Continues, Row Active When Done Burst Interrupted, Row Active After Interrupt Burst Interrupted, Read Restart After Interrupt(16) Burst Interrupted Write Start After Interrupt(11,16) Illegal(10) Burst Read Interrupted, Precharge After Interrupt Illegal Illegal Burst Write Continues, Write Recovery When Done Burst Write Continues, Write Recovery When Done Burst Write Interrupted, Row Active After Interrupt Burst Write Interrupted, Read Start After Interrupt(11,16) Burst Write Interrupted, Write Restart After Interrupt(16) Illegal(10) Burst Write Interrupted, Precharge After Interrupt Illegal Illegal Burst Read Continues, Precharge When Done Burst Read Continues, Precharge When Done Illegal Illegal Illegal Illegal(10) Illegal(10) Illegal Illegal
(12)
ISSI
CS H L L L L L L L L H L L L L L L L L H L L L L L L L L H L L L L L L L L H L L L L L L L L RAS CAS X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H L L H H L L X H H L L H H L L X H H L L H H L L X H H L L H H L L X H H L L H H L L WE X H L H L H L H L X H L H L H L H L X H L H L H L H L X H L H L H L H L X H L H L H L H L X X X V V V V X X X X X X X V V(18) V V(18) V V(18) V X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE
(R)
A11 A10 A9-A0
Row Active
Read
Write
Read With AutoPrecharge
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15
IS42S16100
OPERATION COMMAND TABLE(1,2)
Current State Command Write With DESL Auto-Precharge NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Row Precharge DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Immediately DESL Following NOP Row Active BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Write DESL Recovery NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Operation Burst Write Continues, Write Recovery And Precharge When Done Burst Write Continues, Write Recovery And Precharge Illegal Illegal Illegal Illegal(10) Illegal(10) Illegal Illegal No Operation, Idle State After tRP Has Elapsed No Operation, Idle State After tRP Has Elapsed No Operation, Idle State After tRP Has Elapsed Illegal(10) Illegal(10) Illegal(10) No Operation, Idle State After tRP Has Elapsed(10) Illegal Illegal No Operation, Row Active After tRCD Has Elapsed No Operation, Row Active After tRCD Has Elapsed No Operation, Row Active After tRCD Has Elapsed Illegal(10) Illegal(10) Illegal(10,14) Illegal(10) Illegal Illegal No Operation, Row Active After tDPL Has Elapsed No Operation, Row Active After tDPL Has Elapsed No Operation, Row Active After tDPL Has Elapsed Read Start Write Restart Illegal(10) Illegal(10) Illegal Illegal CS H L L L L L L L L H L L L L L L L L H L L L L L L L L H L L L L L L L L RAS CAS X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H L L H H L L X H H L L H H L L X H H L L H H L L X H H L L H H L L WE X H L H L H L H L X H L H L H L H L X H L H L H L H L X H L H L H L H L
ISSI
X X X V V V V X X X X X X X V V(18) V V(18) V V(18) V X X X OPCODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE
(R)
A11 A10 A9-A0
16
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IS42S16100
OPERATION COMMAND TABLE(1,2)
Current State Command Write Recovery DESL With AutoNOP Precharge BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Refresh DESL NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Mode Register DESL Set NOP BST READ/READA WRIT/WRITA ACT PRE/PALL REF/SELF MRS Operation No Operation, Idle State After tDAL Has Elapsed No Operation, Idle State After tDAL Has Elapsed No Operation, Idle State After tDAL Has Elapsed Illegal(10) Illegal(10) Illegal(10) Illegal(10) Illegal Illegal No Operation, Idle State After tRP Has Elapsed No Operation, Idle State After tRP Has Elapsed No Operation, Idle State After tRP Has Elapsed Illegal Illegal Illegal Illegal Illegal Illegal No Operation, Idle State After tMCD Has Elapsed No Operation, Idle State After tMCD Has Elapsed No Operation, Idle State After tMCD Has Elapsed Illegal Illegal Illegal Illegal Illegal Illegal CS H L L L L L L L L H L L L L L L L L H L L L L L L L L RAS CAS X H H H H L L L L X H H H H L L L L X H H H H L L L L X H H L L H H L L X H H L L H H L L X H H L L H H L L WE X H L H L H L H L X H L H L H L H L X H L H L H L H L
ISSI
X X X X X X V V(18) V V(18) V V(18) V X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X X X X X X X V V V(18) V V V(18) V V V(18) V V X X X X OP CODE X X X V V V V X
(R)
A11 A10 A9-A0
Notes: 1. H: HIGH level input, L: LOW level input, X: HIGH or LOW level input, V: Valid data input 2. All input signals are latched on the rising edge of the CLK signal. 3. Both banks must be placed in the inactive (idle) state in advance. 4. The state of the A0 to A11 pins is loaded into the mode register as an OP code. 5. The row address is generated automatically internally at this time. The I/O pin and the address pin data is ignored. 6. During a self-refresh operation, all pin data (states) other than CKE is ignored. 7. The selected bank must be placed in the inactive (idle) state in advance. 8. The selected bank must be placed in the active state in advance. 9. This command is valid only when the burst length set to full page. 10. This is possible depending on the state of the bank selected by the A11 pin. 11. Time to switch internal busses is required. 12. The IS42S16100 can be switched to power-down mode by dropping the CKE pin LOW when both banks in the idle state. Input pins other than CKE are ignored at this time. 13. The IS42S16100 can be switched to self-refresh mode by dropping the CKE pin LOW when both banks in the idle state. Input pins other than CKE are ignored at this time. 14. Possible if tRRD is satisfied. 15. Illegal if tRAS is not satisfied. 16. The conditions for burst interruption must be observed. Also note that the IS42S16100 will enter the precharged state immediately after the burst operation completes if auto-precharge is selected. 17. Command input becomes possible after the period tRCD has elapsed. Also note that the IS42S16100 will enter the precharged state immediately after the burst operation completes if auto-precharge is selected. 18. A8,A9 = don't care.
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IS42S16100
CKE RELATED COMMAND TRUTH TABLE(1)
Current State Self-Refresh Operation Undefined Self-Refresh Recovery(2) Self-Refresh Recovery(2) Illegal(2) Illegal(2) Self-Refresh Idle State After tRC Has Elapsed Idle State After tRC Has Elapsed Illegal Illegal Power-Down on the Next Cycle Power-Down on the Next Cycle Illegal Illegal Clock Suspend Termination on the Next Cycle (2) Clock Suspend Undefined Power-Down Mode Termination, Idle After That Termination(2) Power-Down Mode No Operation See the Operation Command Table Bank Active Or Precharge Auto-Refresh Mode Register Set See the Operation Command Table See the Operation Command Table See the Operation Command Table Self-Refresh(3) See the Operation Command Table Power-Down Mode(3) See the Operation Command Table Clock Suspend on the Next Cycle(4) Clock Suspend Termination on the Next Cycle Clock Suspend Termination on the Next Cycle CKE n-1 n H L L L L L H H H H H H H H L L H L L H H H H H H H H H H L H H L L X H H H H L H H H H L L L L H L X H L H H H H H L L L L L X H L H L CS X H L L L X H L L L H L L L X X X X X H L L L L H L L L L X X X X X RAS CAS X X H H L X X H H L X H H L X X X X X X H L L L X H L L L X X X X X X X H L X X X H L X X H L X X X X X X X X H L L X X H L L X X X X X WE X X X X X X X X X X X X X X X X X X X X X X H L X X X H L X X X X X
ISSI
X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X
(R)
A11 A10 A9-A0
Self-Refresh Recovery
Power-Down
Both Banks Idle
Other States
X X X X X OP CODE X X X X X X X X OP CODE X X X X X X X X X X
Notes: 1. H: HIGH level input, L: LOW level input, X: HIGH or LOW level input 2. The CLK pin and the other input are reactivated asynchronously by the transition of the CKE level from LOW to HIGH. The minimum setup time (tCKA) required before all commands other than mode termination must be satisfied. 3. Both banks must be set to the inactive (idle) state in advance to switch to power-down mode or self-refresh mode. 4. The input must be command defined in the operation command table.
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IS42S16100
TWO BANKS OPERATION COMMAND TRUTH TABLE(1,2)
Operation DESL NOP BST CS H L L RAS CAS X H H X H H WE X H L A11 A10 A9-A0 X X X X X X X X X Previous State BANK 0 BANK 1 Any Any R/W/A I I/A I/A I/A R/W I/A R/W R/W/A A R/W/A A Any Any I/A I/A R/W/A I R/W/A A R/W/A A I/A R/W I/A R/W Next State BANK 0 BANK 1 Any Any A I I/A I/A I/A A I/A A RP RP R R Any Any I/A I/A A I RP RP R R I/A A I/A A
ISSI
(R)
READ/READA
L
H
L
H
H H H H L L L L H H H H L L L L H L X X H H L L X
H H L L H H L L
CA(3) CA(3) CA(3) CA(3) CA(3) CA(3) CA(3) CA(3)
WRIT/WRITA
L
H
L
L
ACT PRE/PALL
L L
L L
H H
H L
REF MRS
L L
L L
L L
H L
H CA(3) H CA(3) L CA(3) L CA(3) H CA(3) H CA(3) L CA(3) L CA(3) RA RA RA RA H X H X L X L X L X L X X X OPCODE
I/A R/W/A R/W A I/A R/W/A R/W A R/W/A I/A A R/W R/W/A I/A A R/W Any I I Any R/W/A/I I/A I/A R/W/A/I I/A R/W/A/I R/W/A/I I/A R/W/A/I I/A I/A R/W/A/I I I I I
I/A WP A WP I/A W A W WP I/A WP A W I/A W A Any A A Any I I I I I/A I R/W/A/I I I I/A I R/W/A/I I I I I
Notes: 1. H: HIGH level input, L: LOW level input, X: HIGH or LOW level input, RA: Row Address, CA: Column Address 2. The device state symbols are interpreted as follows: I Idle (inactive state) A Row Active State R Read W Write RP Read With Auto-Precharge WP Write With Auto-Precharge Any Any State 3. CA: A8,A9 = don't care.
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19
IS42S16100
SIMPLIFIED STATE TRANSITION DIAGRAM (One Bank Operation)
ISSI
(R)
SELF REFRESH
SREF entry SREF exit
MODE REGISTER SET
MRS
IDLE
REF
AUTO REFRESH
CKE_ CKE ACT
IDLE POWER DOWN
ACTIVE POWER DOWN
CKE_ CKE
BST
BANK ACTIVE
WRIT READ
BST
WRIT WRITA READ READA
READ
WRITE
CKE_ WRIT
READ
CKE_
CLOCK SUSPEND
CKE WRITA CKE_ CKE WRITA READA
READA CKE_
CKE
CLOCK SUSPEND
WRITE WITH AUTO PRECHARGE
PRE
PRE PRE
READ WITH AUTO PRECHARGE
CKE
POWER APPLIED
POWER ON
PRE
PRECHARGE
Automatic transition following the completion of command execution. Transition due to command input.
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IS42S16100
Device Initialization At Power-On
(Power-On Sequence) As is the case with conventional DRAMs, the IS42S16100 product must be initialized by executing a stipulated power-on sequence after power is applied. After power is applied and VCC and VCCQ reach their stipulated voltages, set and hold the CKE and DQM pins HIGH for 100 s. Then, execute the precharge command to precharge both bank. Next, execute the auto-refresh command twice or more and define the device operation mode by executing a mode register set command. The mode register set command can be also set before auto-refresh command.
ISSI
Burst Length
(R)
When writing or reading, data can be input or output data continuously. In these operations, an address is input only once and that address is taken as the starting address internally by the device. The device then automatically generates the following address. The burst length field in the mode register stipulates the number of data items input or output in sequence. In the IS42S16100 product, a burst length of 1, 2, 4, 8, or full page can be specified. See the table on the next page for details on setting the mode register.
Burst Type
The burst data order during a read or write operation is stipulated by the burst type, which can be set by the mode register set command. The IS42S16100 product supports sequential mode and interleaved mode burst type settings. See the table on the next page for details on setting the mode register. See the "Burst Length and Column Address Sequence" item for details on I/O data orders in these modes.
Mode Register Settings
The mode register set command sets the mode register. When this command is executed, pins A0 to A9, A10, and A11 function as data input pins for setting the register, and this data becomes the device internal OP code. This OP code has four fields as listed in the table below. Input Pin A11, A10, A9, A8 A6, A5, A4 A3 A2, A1, A0 Field Mode Options CAS Latency Burst Type Burst Length
Write Mode
Burst write or single write mode is selected by the OP code (A11, A10, A9) of the mode register. A burst write operation is enabled by setting the OP code (A11, A10, A9) to (0,0,0). A burst write starts on the same cycle as a write command set. The write start address is specified by the column address and bank select address at the write command set cycle. A single write operation is enabled by setting OP code (A11, A10, A9) to (1,0,0). In a single write operation, data is only written to the column address and bank select address specified by the write command set cycle without regard to the bust length setting.
Note that the mode register set command can be executed only when both banks are in the idle (inactive) state. Wait at least two cycles after executing a mode register set command before executing the next command.
CAS Latency
During a read operation, the between the execution of the read command and data output is stipulated as the CAS latency. This period can be set using the mode register set command. The optimal CAS latency is determined by the clock frequency and device speed grade (-10/12). See the "Operating Frequency / Latency Relationships" item for details on the relationship between the clock frequency and the CAS latency. See the table on the next page for details on setting the mode register.
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IS42S16100
MODE REGISTER
11 10 9 8 7 6 5 LT MODE 4 3 BT 2 1 BL 0
ISSI
Address Bus Mode Register (Mx)
(R)
WRITE MODE
M2 Burst Length 0 0 0 0 1 1 1 1
M1 0 0 1 1 0 0 1 1
M0 0 1 0 1 0 1 0 1
Sequential 1 2 4 8 Reserved Reserved Reserved Full Page
Interleaved 1 2 4 8 Reserved Reserved Reserved Reserved
M3 Burst Type 0 1
Type Sequential Interleaved
M6 Latency Mode 0 0 0 0 1 1 1 1
M5 0 0 1 1 0 0 1 1
M4 0 1 0 1 0 1 0 1
CAS Latency Reserved Reserved 2 3 Reserved Reserved Reserved Reserved
M11 X X 0
M10 X X 0
M9 0 1 0
M8 0 0 0
M7 0 0 0
Write Mode Mode Register Set Burst Read & Single Write Reserved Test Set
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IS42S16100
BURST LENGTH AND COLUMN ADDRESS SEQUENCE Burst Length
2 4
ISSI
Column Address A2 A1 A0
X X X X X X 0 0 0 0 1 1 1 1 n X X 0 0 1 1 0 0 1 1 0 0 1 1 n 0 1 0 1 0 1 0 1 0 1 0 1 0 1 n
(R)
Address Sequence Sequential Interleaved
0-1 1-0 0-1-2-3 1-2-3-0 2-3-0-1 3-0-1-2 0-1-2-3-4-5-6-7 1-2-3-4-5-6-7-0 2-3-4-5-6-7-0-1 3-4-5-6-7-0-1-2 4-5-6-7-0-1-2-3 5-6-7-0-1-2-3-4 6-7-0-1-2-3-4-5 7-0-1-2-3-4-5-6 Cn, Cn+1, Cn+2 Cn+3, Cn+4..... ...Cn-1(Cn+255), Cn(Cn+256)..... 0-1 1-0 0-1-2-3 1-0-3-2 2-3-0-1 3-2-1-0 0-1-2-3-4-5-6-7 1-0-3-2-5-4-7-6 2-3-0-1-6-7-4-5 3-2-1-0-7-6-5-4 4-5-6-7-0-1-2-3 5-4-7-6-1-0-3-2 6-7-4-5-2-3-0-1 7-6-5-4-3-2-1-0 None
8
Full Page (256)
Notes: 1. The burst length in full page mode is 256.
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23
IS42S16100
BANK SELECT AND PRECHARGE ADDRESS ALLOCATION
Row X0 X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 Column Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Y9 Y10 Y11 -- -- -- -- -- -- -- -- -- -- 0 1 0 1 -- -- -- -- -- -- -- -- -- -- 0 1 0 1
ISSI
(R)
Row Address Row Address Row Address Row Address Row Address Row Address Row Address Row Address Row Address Row Address Precharge of the Selected Bank (Precharge Command) Row Address Precharge of Both Banks (Precharge Command) (Active Command) Bank 0 Selected (Precharge and Active Command) Bank 1 Selected (Precharge and Active Command) Column Address Column Address Column Address Column Address Column Address Column Address Column Address Column Address Don't Care Don't Care Auto-Precharge - Disabled Auto-Precharge - Enables Bank 0 Selected (Read and Write Commands) Bank 1 Selected (Read and Write Commands)
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IS42S16100
Burst Read
The read cycle is started by executing the read command. The address provided during read command execution is used as the starting address. First, the data corresponding to this address is output in synchronization with the clock signal after the CAS latency period. Next, data corresponding to an address generated automatically by the device is output in synchronization with the clock signal. The output buffers go to the LOW impedance state CAS latency minus one cycle after the read command, and go to the HIGH impedance state automatically after the last data is output. However, the case where the burst length
ISSI
(R)
is a full page is an exception. In this case the output buffers must be set to the high impedance state by executing a burst stop command. Note that upper byte and lower byte output data can be masked independently under control of the signals applied to the U/LDQM pins. The delay period (tQMD) is fixed at two, regardless of the CAS latency setting, when this function is used. The selected bank must be set to the active state before executing this command.
CLK
COMMAND UDQM LDQM
READ A0 tQMD=2
I/O8-I/O15 I/O0-I/O 7
READ (CA=A, BANK 0)
DOUT A0
HI-Z
DOUT A2
DOUT A3
HI-Z
DOUT A0
DOUT A1
HI-Z
DA A MASK (LOWER BYTE) T
DA A MASK (UPPER BYTE) T
CAS latency = 3, burst length = 4
Burst Write
The write cycle is started by executing the command. The address provided during write command execution is used as the starting address, and at the same time, data for this address is input in synchronization with the clock signal. Next, data is input in other in synchronization with the clock signal. During this operation, data is written to address generated automatically by the device. This cycle terminates automatically after a number of clock cycles determined by the stipulated burst length. However, the case where the burst length is a full page is an exception. In this case the write cycle must be terminated by executing a burst stop command. The latency for I/O pin data input is zero, regardless of the CAS latency setting. However, a wait period (write recovery: tDPL) after the last data input is required for the device to complete the write operation. Note that the upper byte and lower byte input data can be masked independently under control of the signals applied to the U/LDQM pins. The delay period (tDMD) is fixed at zero, regardless of the CAS latency setting, when this function is used. The selected bank must be set to the active state before executing this command.
CLK
COMMAND I/O
WRITE
DIN 0
DIN 1
DIN 2
DIN 3
BURST LENGTH
CAS latency = 2,3, burst length = 4
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IS42S16100
Read With Auto-Precharge
The read with auto-precharge command first executes a burst read operation and then puts the selected bank in the precharged state automatically. After the precharge completes, the bank goes to the idle state. Thus this command performs a read command and a precharge command in a single operation. During this operation, the delay period (tPQL) between the last burst data output and the start of the precharge operation differs depending on the CAS latency setting. When the CAS latency setting is two, the precharge operation starts on one clock cycle before the last burst data is output (tPQL = -1). When the CAS latency setting is
ISSI
(R)
three, the precharge operation starts on two clock cycles before the last burst data is output (tPQL = -2). Therefore, the selected bank can be made active after a delay of tRP from the start position of this precharge operation. The selected bank must be set to the active state before executing this command. The auto-precharge function is invalid if the burst length is set to full page. CAS Latency tPQL 3 -2 2 -1
CLK
COMMAND I/O
READA 0 tPQL DOUT 0 DOUT 1 DOUT 2 DOUT 3 tRP
ACT 0
READ WITH AUTO-PRECHARGE (BANK 0)
PRECHARGE START
CAS latency = 2, burst length = 4
CLK
COMMAND I/O
READA 0 tPQL DOUT 0 DOUT 1 DOUT 2 tRP DOUT 3
ACT 0
READ WITH AUTO-PRECHARGE (BANK 0)
PRECHARGE START
CAS latency = 3, burst length = 4
26
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IS42S16100
Write With Auto-Precharge
The write with auto-precharge command first executes a burst write operation and then puts the selected bank in the precharged state automatically. After the precharge completes the bank goes to the idle state. Thus this command performs a write command and a precharge command in a single operation. During this operation, the delay period (tDAL) between the last burst data input and the completion of the precharge operation differs depending on the CAS latency setting. The delay (tDAL) is tRP plus one CLK period. That is, the precharge operation starts one clock period after the last burst data input.
ISSI
(R)
Therefore, the selected bank can be made active after a delay of tDAL. The selected bank must be set to the active state before executing this command. The auto-precharge function is invalid if the burst length is set to full page. CAS Latency tDAL 3 1CLK +tRP 2 1CLK +tRP
CLK
COMMAND I/O
WRITE A0
ACT 0
PRECHARGE START
DIN 0
DIN 1
DIN 2
DIN 3 tRP tDAL
WRITE WITH AUTO-PRECHARGE (BANK 0)
CAS latency = 2, burst length = 4
CLK
COMMAND I/O
WRITE A0
PRECHARGE START
ACT 0
DIN 0
DIN 1
DIN 2
DIN 3 tRP tDAL
WRITE WITH AUTO-PRECHARGE (BANK 0)
CAS latency = 3, burst length = 4
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IS42S16100
Interval Between Read Command
A new command can be executed while a read cycle is in progress, i.e., before that cycle completes. When the second read command is executed, after the CAS latency has elapsed, data corresponding to the new read command is output in place of the data due to the previous read command.
ISSI
(R)
The interval between two read command (tCCD) must be at least one clock cycle. The selected bank must be set to the active state before executing this command.
CLK
COMMAND I/O
READ A0
READ B0
DOUT A0 tCCD
DOUT B0
DOUT B1
DOUT B2
DOUT B3
READ (CA=A, BANK 0) READ (CA=B, BANK 0)
CAS latency = 2, burst length = 4
Interval Between Write Command
A new command can be executed while a write cycle is in progress, i.e., before that cycle completes. At the point the second write command is executed, data corresponding to the new write command can be input in place of the data for the previous write command. The interval between two write commands (tCCD) must be at least one clock cycle. The selected bank must be set to the active state before executing this command.
CLK
tCCD
COMMAND I/O
WRITE A0
WRITE B0
DIN A0
DIN B0
DIN B1
DIN B2
DIN B3
WRITE (CA=A, BANK 0) WRITE (CA=B, BANK 0)
CAS latency = 2, burst length = 4
28
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Rev. A 09/29/00
IS42S16100
Interval Between Write and Read Commands
A new read command can be executed while a write cycle is in progress, i.e., before that cycle completes. Data corresponding to the new read command is output after the CAS latency has elapsed from the point the new read command was executed. The I/On pins must be placed in the HIGH impedance state at least one cycle before data is output during this operation.
ISSI
(R)
The interval (tCCD) between command must be at least one clock cycle. The selected bank must be set to the active state before executing this command.
CLK
tCCD
COMMAND I/O
WRITE A0
READ B0
DIN A0
WRITE (CA=A, BANK 0)
HI-Z
DOUT B0
DOUT B1
DOUT B2
DOUT B3
READ (CA=B, BANK 0)
CAS latency = 2, burst length = 4
CLK
tCCD
COMMAND I/O
WRITE A0
READ B0
DIN A0
WRITE (CA=A, BANK 0)
HI-Z
READ (CA=B, BANK 0)
DOUT B0
DOUT B1
DOUT B2
DOUT B3
CAS latency = 3, burst length = 4
Don't Care
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29
IS42S16100
Interval Between Read and Write Commands
A read command can be interrupted and a new write command executed while the read cycle is in progress, i.e., before that cycle completes. Data corresponding to the new write command can be input at the point new write command is executed. To prevent collision between input and output data at the I/On pins during this operation, the
ISSI
(R)
output data must be masked using the U/LDQM pins. The interval (tCCD) between these commands must be at least one clock cycle. The selected bank must be set to the active state before executing this command.
CLK
tCCD
COMMAND U/LDQM I/O
READ A0
WRITE B0
HI-Z
DIN B0
DIN B1
DIN B2
DIN B3
READ (CA=A, BANK 0)
WRITE (CA=B, BANK 0)
CAS latency = 2, 3, burst length = 4
30
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
Precharge
The precharge command sets the bank selected by pin A11 to the precharged state. This command can be executed at a time tRAS following the execution of an active command to the same bank. The selected bank goes to the idle state at a time tRP following the execution of the precharge command, and an active command can be executed again for that bank. If pin A10 is low when this command is executed, the bank selected by pin A11 will be precharged, and if pin A10 is HIGH, both banks will be precharged at the same time. This input to pin A11 is ignored in the latter case.
ISSI
Read Cycle Interruption Using the Precharge Command
(R)
A read cycle can be interrupted by the execution of the precharge command before that cycle completes. The delay time (tRQL) from the execution of the precharge command to the completion of the burst output is the clock cycle of CAS latency. CAS Latency tRQL 3 3 2 2
CLK
tRQL
COMMAND I/O
READ A0
PRE 0
DOUT A0
READ (CA=A, BANK 0)
DOUT A1
DOUT A2
HI-Z
PRECHARGE (BANK 0)
CAS latency = 2, burst length = 4
CLK
tRQL
COMMAND I/O
READ A0
PRE 0
DOUT A0
READ (CA=A, BANK 0)
DOUT A1
DOUT A2
HI-Z
PRECHARGE (BANK 0)
CAS latency = 3, burst length = 4
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31
IS42S16100
Write Cycle Interruption Using the Precharge Command
A write cycle can be interrupted by the execution of the precharge command before that cycle completes. The delay time (tWDL) from the precharge command to the point where burst input is invalid, i.e., the point where input data is no longer written to device internal memory is zero clock cycles regardless of the CAS. To inhibit invalid write, the DQM signal must be asserted HIGH with the precharge command. This precharge command and burst write command must be of the same bank, otherwise it is not precharge interrupt but only another bank precharge of dual bank operation.
ISSI
(R)
Inversely, to write all the burst data to the device, the precharge command must be executed after the write data recovery period (tDPL) has elapsed. Therefore, the precharge command must be executed on one clock cycle that follows the input of the last burst data item.
CAS Latency tWDL tDPL
3 0 1
2 0 1
CLK
tWDL=0
COMMAND DQM I/O
WRITE A0
PRE 0
DIN A0
DIN A1
DIN A2
DIN A3
MASKED BY DQM
CAS latency = 2, 3, burst length = 4
WRITE (CA=A, BANK 0)
PRECHARGE (BANK 0)
CLK
tDPL
COMMAND I/O
WRITE A0
PRE 0
DIN A0
DIN A1
DIN A2
DIN A3
PRECHARGE (BANK 0)
WRITE (CA=A, BANK 0)
CAS latency = 2, 3, burst length = 4
32
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IS42S16100
Read Cycle (Full Page) Interruption Using the Burst Stop Command
The IS42S16100 can output data continuously from the burst start address (a) to location a+255 during a read cycle in which the burst length is set to full page. The IS42S16100 repeats the operation starting at the 256th cycle with the data output returning to location (a) and continuing with a+1, a+2, a+3, etc. A burst stop command must be executed to terminate this cycle. A precharge command must be executed within the ACT to PRE command period (tRAS max.) following the burst stop command.
ISSI
(R)
After the period (tRBD) required for burst data output to stop following the execution of the burst stop command has elapsed, the outputs go to the HIGH impedance state. This period (tRBD) is two clock cycle when the CAS latency is two and three clock cycle when the CAS latency is three.
CAS Latency tRBD
3 3
2 2
CLK
tRBD
COMMAND I/O
READ A0
BST
DOUT A0
READ (CA=A, BANK 0)
DOUT A0
DOUT A1
DOUT A2
BURST STOP
DOUT A3
HI-Z
CAS latency = 2, burst length = full page
CLK
tRBD
COMMAND I/O
READ A0
BST
DOUT A0
READ (CA=A, BANK 0)
DOUT A0
DOUT A1
BURST STOP
DOUT A2
DOUT A3
HI-Z
CAS latency = 3, burst length = full page
Integrated Silicon Solution, Inc. -- 1-800-379-4774
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33
IS42S16100
Write Cycle (Full Page) Interruption Using the Burst Stop Command
The IS42S16100 can input data continuously from the burst start address (a) to location a+255 during a write cycle in which the burst length is set to full page. The IS42S16100 repeats the operation starting at the 256th cycle with data input returning to location (a) and continuing with a+1, a+2, a+3, etc. A burst stop command must be executed to terminate this cycle. A precharge command
ISSI
(R)
must be executed within the ACT to PRE command period (tRAS max.) following the burst stop command. After the period (tWBD) required for burst data input to stop following the execution of the burst stop command has elapsed, the write cycle terminates. This period (tWBD) is zero clock cycles, regardless of the CAS latency.
CLK
tWBD=0 tRP
PRE 0
COMMAND I/O
WRITE A0
BST
INVALID DATA
DIN A0
DIN A1
DIN A
DIN A1
DIN A2
BURST STOP PRECHARGE (BANK 0)
READ (CA=A, BANK 0)
CAS latency = 2, 3, burst length = full page
Don't Care
Burst Data Interruption Using the U/LDQM Pins (Read Cycle)
Burst data output can be temporarily interrupted (masked) during a read cycle using the U/LDQM pins. Regardless of the CAS latency, two clock cycles (tQMD) after one of the U/LDQM pins goes HIGH, the corresponding outputs go to the HIGH impedance state. Subsequently, the outputs are maintained in the high impedance state as long as that U/LDQM pin remains HIGH. When the U/LDQM pin goes LOW, output is resumed at a time tQMD later. This output
CLK
control operates independently on a byte basis with the UDQM pin controlling upper byte output (pins I/O8-I/O15) and the LDQM pin controlling lower byte output (pins I/O0 to I/O7). Since the U/LDQM pins control the device output buffers only, the read cycle continues internally and, in particular, incrementing of the internal burst counter continues.
COMMAND UDQM LDQM
READ A0 tQMD=2
I/O8-I/O15 I/O0-I/O 7
READ (CA=A, BANK 0)
DOUT A0
HI-Z
DOUT A2
DOUT A3
HI-Z
DOUT A0
DOUT A1
HI-Z
DATA MASK (LOWER BYTE)
CAS latency = 2, burst length = 4 34
DATA MASK (UPPER BYTE)
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IS42S16100
Burst Data Interruption U/LDQM Pins (Write Cycle)
Burst data input can be temporarily interrupted (muted ) during a write cycle using the U/LDQM pins. Regardless of the CAS latency, as soon as one of the U/LDQM pins goes HIGH, the corresponding externally applied input data will no longer be written to the device internal circuits. Subsequently, the corresponding input continues to be muted as long as that U/LDQM pin remains HIGH. The IS42S16100 will revert to accepting input as soon as
CLK COMMAND UDQM
tDMD=0
ISSI
(R)
that pin is dropped to LOW and data will be written to the device. This input control operates independently on a byte basis with the UDQM pin controlling upper byte input (pin I/O8 to I/O15) and the LDQM pin controlling the lower byte input (pins I/O0 to I/O7). Since the U/LDQM pins control the device input buffers only, the cycle continues internally and, inparticular, incrementing of the internal burst counter continues.
WRITE A0
LDQM
I/O8-I/O15 I/O0-I/O7
WRITE (CA=A, BANK 0)
DIN A1
DIN A2
DIN A3
DIN A0
DATA MASK (LOWER BYTE)
DIN A3
DATA MASK (UPPER BYTE)
CAS latency = 2, burst length = 4
Don't Care
Burst Read and Single Write
The burst read and single write mode is set up using the mode register set command. During this operation, the burst read cycle operates normally, but the write cycle only writes a single data item for each write cycle. The CAS latency and DQM latency are the same as in normal mode.
CLK
COMMAND I/O
CAS latency = 2, 3
WRITE A0
DIN A0
WRITE (CA=A, BANK 0)
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35
IS42S16100
Bank Active Command Interval
When the selected bank is precharged, the period trp has elapsed and the bank has entered the idle state, the bank can be activated by executing the active command. If the other bank is in the idle state at that time, the active command can be executed for that bank after the period tRRD has elapsed. At that point both banks will be in the active state. When a bank active command has been executed, a precharge command must be executed for
CLK
tRRD
ISSI
(R)
that bank within the ACT to PRE command period (tRAS max). Also note that a precharge command cannot be executed for an active bank before tRAS (min) has elapsed. After a bank active command has been executed and the trcd period has elapsed, read write (including autoprecharge) commands can be executed for that bank.
COMMAND
ACT 0
ACT 1
BANK ACTIVE (BANK 1)
BANK ACTIVE (BANK 0)
CLK
tRCD
COMMAND
ACT 0
READ 0
BANK ACTIVE (BANK 0)
CAS latency = 3
BANK ACTIVE (BANK 0)
Clock Suspend
When the CKE pin is dropped from HIGH to LOW during a read or write cycle, the IS42S16100 enters clock suspend mode on the next CLK rising edge. This command reduces the device power dissipation by stopping the device internal clock. Clock suspend mode continues as long as the CKE pin remains low. In this state, all inputs other than CKE pin are invalid and no other commands can be executed. Also, the device internal states are maintained. When the CKE pin goes from LOW to HIGH clock suspend mode is terminated on the next CLK rising edge and device operation resumes.
CLK
The next command cannot be executed until the recovery period (tCKA) has elapsed. Since this command differs from the self-refresh command described previously in that the refresh operation is not performed automatically internally, the refresh operation must be performed within the refresh period (tref). Thus the maximum time that clock suspend mode can be held is just under the refresh cycle time.
CKE COMMAND I/O
READ (BANK 0)
READ 0
DOUT 0
DOUT 1
DOUT 2
DOUT 3
CLOCK SUSPEND
CAS latency = 2, burst length = 4 36
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Rev. A 09/29/00
IS42S16100
OPERATION TIMING EXAMPLE Power-On Sequence, Mode Register Set Cycle
T0 CLK
tCK tCHI tCL
ISSI
T1 T2 T3 T10 T17 T18 T19 T20
(R)
CKE HIGH
tCS
tCH tCS tCH tCH tCH tAS tAH CODE tAS tAH
BANK 0 & 1
CS RAS
tCS
CAS
tCS
WE A0-A9
tAS CODE tAS tAH CODE BANK 0 ROW tAH ROW BANK 1
A10 A11 DQM HIGH I/O
WAIT TIME T=100 s
tRP
tRC
tRC
tMCD
tRAS tRC
Undefined
CAS latency = 2, 3
Don't Care
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37
IS42S16100
ISSI
T1
tCHI
(R)
Power-Down Mode Cycle
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tAS tAH ROW tAS tAH
BANK 0 & 1 BANK 0 OR 1
T2
T3
Tn
Tn+1
Tn+2
Tn+3
tCL
tCKS
tCKH tCKA
CKE
tCS
CS RAS
tCS
CAS
tCS
WE A0-A9 A10 A11 DQM I/O
tRP POWER DOWN MODE EXIT POWER DOWN MODE
Undefined Don't Care
ROW BANK 1 BANK 0
BANK 1 BANK 0
tRAS tRC
CAS latency = 2, 3
38
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Auto-Refresh Cycle
T0 CLK
tCKS tCK tCL
T2
T3
Tl
Tm
Tn
Tn+1
CKE
tCS tCH tCS tCH tCH tCH
CS RAS
tCS
CAS
tCS
WE A0-A9
tAS tAH
BANK 0 & 1
ROW ROW BANK 1
A10 A11
BANK 0
DQM I/O
tRP [ tRC ][ tRC ][ tRC ]
Undefined Don't Care
tRAS tRC
CAS latency = 2, 3
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39
IS42S16100
ISSI
T1 tCHI T2 T3 Tm Tm+1 Tm+2 Tn
(R)
Self-Refresh Cycle
T0
CLK
tCKS tCK tCKA tCS tCH tCS tCH tCH tCKA tCL tCKS tCKS
CKE CS RAS
tCS
CAS
tCS tCH
WE A0-A9
tAS tAH
BANK 0 & 1
A10 A11 DQM I/O
tRP
SELF REFRESH MODE
EXIT SELF REFRESH
tRC
tRC
Undefined
CAS latency = 2, 3
Don't Care
Note 1: A8,A9 = Don't Care.
40
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Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tQMD tAC tAC tOH
DOUT m (1)
A0-A9 A10 A11 DQM
COLUMN m BANK 0 AND 1 NO PRE BANK 1 BANK 0 OR 1 BANK 1 tCH BANK 0
ROW ROW BANK 1 BANK 0
tAC tOH
DOUT m+1
tAC tOH
DOUT m+2
tOH
DOUT m+3
I/O
tRCD tRAS tRC tLZ tCAC
tHZ tRQL tRP tRCD tRAS tRC
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
41
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Auto-Precharge
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tQMD tAC tAC tOH
DOUT m (1)
A0-A9 A10 A11 DQM
COLUMN m AUTO PRE BANK 1
ROW ROW BANK 1 BANK 0
tCH
tAC tOH
DOUT m+1
tAC tOH
DOUT m+2
tOH
DOUT m+3
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tPQL tRP tRCD tRAS tRC
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
42
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Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Full Page
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T260
T261
T262
T263
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tQMD tAC tAC tOH
DOUT 0m (1)
A0-A9 A10 A11 DQM
COLUMN
BANK 0 OR 1 BANK 0 tCH
tAC tOH
DOUT 0m+1
tAC tOH
DOUT 0m-1
tAC tOH
DOUT 0m
tOH
DOUT 0m+1
I/O
tLZ tRCD tRAS tRC
(BANK 0)
tHZ tRBD tRP
(BANK 0)
tCAC
(BANK 0)
Undefined
CAS latency = 2, burst length = full page
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
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43
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Ping-Pong Operation (Bank Switching)
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tQMD tAC tAC tOH tOH
DOUT 0m+1 DOUT 0m (1) (1)
A0-A9 A10 A11 DQM
COLUMN AUTO PRE
ROW
COLUMN AUTO PRE
ROW
ROW NO PRE BANK 1 BANK 1 BANK 0 OR 1 BANK 0 tCH tAC tAC tOH
DOUT 1m
ROW BANK 0 OR 1 BANK 0 BANK 1
tOH
DOUT 1m+1
I/O
tLZ tRRD
(BANK 0 TO 1)
tHZ tRCD
(BANK 1)
tLZ
tHZ tRCD
(BANK 0)
tRCD
(BANK 0)
tCAC
(BANK 1)
tCAC
(BANK 1)
tRAS
(BANK 0)
tRP
(BANK 0)
tRAS
(BANK 0)
tRC
(BANK 0)
tRC
(BANK 0)
tRAS
(BANK 1)
tRP
(BANK1)
tRC
(BANK 1)
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care. 44
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tCH NO PRE BANK 1 BANK 0 OR 1 BANK 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN m BANK 0 AND 1
ROW ROW BANK 1 BANK 0
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH tDS DIN m+2
tDH DIN m+3 tDPL tRP tRCD tRAS tRC
Undefined
I/O
tRCD tRAS tRC
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
45
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Auto-Precharge
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tCH BANK 0 AUTO PRE BANK 1 ROW BANK 1
(1)
A0-A9 A10 A11 DQM
COLUMN m
ROW
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH tDS DIN m+2
tDH DIN m+3 tDAL tRP tRCD tRAS tRC
Undefined Don't Care
I/O
tRCD tRAS tRC
CAS latency = 2, burst length = 4
Note 1: A8,A9 = Don't Care. 46
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Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Full Page
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T258
T259
T260
T261
T262
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tCH BANK 0 OR 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN m
tDS
tDH tDS DIN 0m
tDH tDS DIN 0m+1
tDH tDS DIN 0m+2
tDH DIN 0m-1 DIN 0m tDPL tRP
I/O
tRCD tRAS tRC
Undefined
CAS latency = 2, burst length = full page
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
47
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Ping-Pong Operation
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 BANK 1
(1) (1)
A0-A9 A10 A11 DQM
COLUMN AUTO PRE
ROW
COLUMN AUTO PRE
ROW
ROW NO PRE BANK 1 BANK 0 OR 1 BANK 0
ROW BANK 0 tCH
tDS
tDH tDS DIN 0m
tDH tDS DIN 0m+1
tDH tDS DIN 0m+2
tDH tDS DIN 0m+3 tDPL
tDH tDS DIN 1m
tDH tDS DIN 1m+1
tDH tDS DIN 1m+2
tDH DIN 1m+3 tDPL tRCD
(BANK 0)
I/O
tRRD
(BANK 0 TO 1)
tRCD
(BANK 0)
tRCD
(BANK 1)
tRAS
(BANK 0)
tRP
(BANK 0)
tRAS
(BANK 0)
tRC
(BANK 0)
tRC
(BANK 0)
tRAS
(BANK 1)
tRC
(BANK 1)
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
48
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Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Page Mode
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 tQMD tAC NO PRE BANK 1 BANK 0 NO PRE BANK 1 tCS BANK 0 tCH tAC tOH
DOUT n (1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1 BANK 0 OR 1 BANK 1 BANK 0
tAC tOH
DOUT m
tAC tOH
DOUT m+1
tAC tOH
DOUT n+1
tAC tOH
DOUT o
tOH
DOUT o+1
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tCAC tCAC tRQL tRP
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
49
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Page Mode; Data Masking
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE NO PRE BANK 1 tCS tQMD tAC tCH tAC tOH
DOUT m (1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1 BANK 0 OR 1 BANK 1 BANK 0
BANK 0
tQMD tAC
tAC tOH
DOUT m+1
tAC tOH
DOUT o
tOH
DOUT n
tOH
DOUT o+1
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tCAC
tLZ tCAC tRQL tRP
tHZ
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care. 50
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Page Mode
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE BANK 1 tCS BANK 0 tCH BANK 0 OR 1 BANK 1 BANK 0
(1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH tDS DIN n
tDH tDS DIN n+1
I/O
tRCD tRAS tRC
tDH tDS tDH DIN o DIN o+1
tDPL tRP
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
51
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Page Mode; Data Masking
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE BANK 1 BANK 0 NO PRE BANK 1 BANK 0 BANK 1OR 0 BANK 1 BANK 0
(1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1
tCS
tCH
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH DIN n
tDS
tDH tDS DIN o
tDH DIN o+1
I/O
tRCD tRAS tRC
tDPL tRP
Undefined Don't Care
CAS latency = 2, burst length = 2
Note 1: A8,A9 = Don't Care.
52
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Clock Suspend
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL tCKS tCKH
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS NO PRE BANK 1 BANK 0 tQMD BANK 0 OR 1 BANK 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW
ROW BANK 1 BANK 0
tCH
tAC
tAC tOH tOH
DOUT m+1 DOUT m
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tRP tRAS tRC
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
53
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Clock Suspend
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL tCKS tCKH
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW
ROW BANK 1 BANK 0
tCH
tDS
tDH DIN m
tDS DIN m+1
tDH
I/O
tRCD tRAS tRC
tDPL tRP tRAS tRC
Undefined
CAS latency = 2, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
54
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Precharge Termination
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tQMD tAC tCH tAC tOH
DOUT m (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
ROW ROW BANK 0 OR 1 BANK 0 BANK 0 BANK 1
COLUMN n AUTO PRE NO PRE BANK 1 BANK 0
tAC tOH
DOUT m+1
tHZ tOH
DOUT m+2
I/O
tLZ tRCD tRAS tRC tCAC
tRQL tRP
tRCD tRAS tRC
tCAC
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
55
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Precharge Termination
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tCH BANK 0 OR 1 BANK 0 tCS tCH BANK 0 ROW BANK 1 NO PRE BANK 1 BANK 0 tCS tDH tDS
DIN 0m+2 DIN 0n (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
ROW
COLUMN n AUTO PRE
tDS
tDH tDS
DIN 0m DIN 0m+1
tDH tDS
tDH
I/O
tRCD tRAS tRC
tRCD tRP tRAS tRC
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
56
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Byte Operation
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 tQMD tQMD tCH BANK 0 BANK 0
(1)
A0-A9 A10 A11 UDQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW ROW BANK 1
tCS
tCS
tCH
LDQM
tAC tLZ tHZ tOH
DOUT m
tAC tLZ
tAC tOH
DOUT m+2
tOH
DOUT m+3
I/O8-15
tAC tLZ
tAC tOH
DOUT m
tOH
DOUT m+1
I/O0-7
tRCD tRAS tRC tCAC
tQMD
tRQL tRP
tRCD tRAS tRC
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
57
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Byte Operation
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 tCH BANK 0 BANK 0
(1)
A0-A9 A10 A11 UDQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW ROW BANK 1
tCS
tCS
tCH
LDQM
tDS tDS tDH DIN m tDS tDH DIN m tRCD tRAS tRC
Undefined
tDH tDS DIN m+1 tDS DIN m+3 tDPL tRP tRCD tRAS tRC DIN m+3 tDH tDH
I/O8-15
I/O0-7
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care. 58
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle, Write Cycle / Burst Read, Single Write
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tQMD tAC tAC tOH
DOUT m (1) (1)
A0-A9 A10 A11 DQM
COLUMN m NO PRE BANK 1
COLUMN n AUTO PRE NO PRE BANK 1 tCH tAC tOH
DOUT m+1
BANK 0 AND 1 BANK 0 OR 1 BANK 1 BANK 0
BANK 0
tAC tOH
DOUT m+2
tDS tOH
DOUT m+3 DIN n
tDH
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tDPL tRP
Undefined
CAS latency = 2, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
59
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 BANK 0 tCS tQMD tAC tAC tOH
DOUT m (1)
A0-A9 A10 A11 DQM
COLUMN m BANK 0 AND 1 NO PRE BANK 1 BANK 0 OR 1 BANK 1 tCH BANK 0
ROW
ROW BANK 1 BANK 0
tAC tOH
DOUT m+1
tAC tOH
DOUT m+2
tOH
DOUT m+3
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tRQL tRP tRCD tRAS tRC
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
60
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Auto-Precharge
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 BANK 0 tCS tQMD tAC tAC tOH
DOUT m (1)
A0-A9 A10 A11 DQM
COLUMN AUTO PRE
ROW ROW
BANK 1
BANK 1 BANK 0
tCH
tAC tOH
DOUT m+1
tAC tOH
DOUT m+2
tOH
DOUT m+3
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tPQL tRP tRCD tRAS tRC
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
61
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Full Page
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T262
T263
T264
T265
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 BANK 0 tCS tCH NO PRE BANK 0 OR 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN
tAC
tAC tOH
DOUT 0m
tAC tOH
DOUT 0m+1
tAC tOH
DOUT 0m-1
tAC tOH
DOUT 0m
tOH
DOUT 0m+1
I/O
tLZ tRCD
(BANK 0)
tHZ tRBD tRP
(BANK 0)
tCAC
(BANK 0)
tRAS
(BANK 0)
tRC
(BANK 0)
Undefined
CAS latency = 3, burst length = full page
Don't Care
Note 1: A8,A9 = Don't Care.
62
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Ping Pong Operation (Bank Switching)
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 BANK 1 ROW NO PRE BANK 0 tCS tQMD tAC tLZ tAC tOH
DOUT 0m (1) (1)
A0-A9 A10 A11 DQM
ROW
COLUMN AUTO PRE
COLUMN AUTO PRE
ROW
ROW NO PRE BANK 1 BANK 0 OR 1 BANK 0 tCH tAC tOH
DOUT 0m+1
BANK 0 OR 1 BANK1 BANK 0
tAC tOH
DOUT 1m
tOH
DOUT 1m+1
I/O
tRRD
(BANK 0 TO 1)
tRCD
(BANK 1)
tCAC
(BANK 1)
tHZ tRQL
(BANK 0)
tRCD
(BANK 0)
tCAC
(BANK 0)
tRCD
(BANK 0)
tRAS
(BANK 0)
tRP
(BANK 0)
tRAS
(BANK 0)
tRC
(BANK 0)
tRC
(BANK 0)
tRAS
(BANK 1)
tRP
(BANK1)
tRC
(BANK 1)
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
63
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tCH NO PRE BANK 1 BANK 0 OR 1 BANK 1 BANK 0 COLUMN BANK 0 AND 1 ROW BANK 1 BANK 0
(1)
A0-A9 A10 A11 DQM
ROW
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH tDS DIN m+2
tDH DIN m+3 tDPL tRP tRCD tRAS tRC
Undefined
I/O
tRCD tRAS tRC
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
64
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Auto-Precharge
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS BANK 0 tCH BANK 0 BANK 1
(1)
A0-A9 A10 A11 DQM
COLUMN AUTO PRE
ROW
ROW BANK 1
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH tDS DIN m+2
tDH DIN m+3 tDAL tRP tRCD tRAS tRC
Undefined
I/O
tRCD tRAS tRC
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
65
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Full Page
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T259
T260
T261
T262
T263
T264
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS BANK 0 tCH NO PRE BANK 0 OR 1 BANK 0 COLUMN
(1)
A0-A9 A10 A11 DQM
tDS
tDH tDS DIN 0m
tDH tDS DIN 0m+1
tDH tDS DIN 0m+2
tDH DIN 0m-1 DIN 0m tDPL tRP
I/O
tRCD tRAS tRC
Undefined Don't Care
CAS latency = 3, burst length = full page
Note 1: A8,A9 = Don't Care.
66
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Ping-Pong Operation (Bank Switching)
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 BANK 1
(1) (1)
A0-A9 A10 A11 DQM
COLUMN AUTO PRE
ROW
COLUMN AUTO PRE
ROW
ROW NO PRE BANK 1 BANK 0 OR 1 BANK 0
ROW BANK 1 BANK 0 tCH
tDS
tDH tDS DIN 0m
tDH tDS DIN 0m+1
tDH tDS DIN 0m+2
tDH tDS DIN 0m+3 tDPL
(BANK 0)
tDH tDS DIN 1m
tDH tDS DIN 1m+1
tDH tDS DIN 1m+2
tDH DIN 1m+3 tDPL tRCD
I/O
tRRD
(BANK 0 TO 1)
tRCD
(BANK 0)
tRCD
(BANK 1)
tRAS
(BANK 0)
tRP
(BANK 0)
tRAS tRC
tRC
(BANK 0)
tRAS
(BANK 1)
tRC
(BANK 1)
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
67
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Page Mode
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 1 BANK 0 tCS tQMD BANK 0 NO PRE NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 BANK 0
(1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1
tCH tAC tAC tOH
DOUT o
tAC tLZ
tAC tOH
DOUT m
tAC tOH
DOUT m+1
tAC tOH
DOUT n
tOH
DOUT n+1
tOH
DOUT o+1
I/O
tCAC tRCD tRAS tRC tCAC
tCAC tRQL tRP
tHZ
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
68
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Page Mode; Data Masking
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 BANK 1 BANK 0 tCS tQMD BANK 1 BANK 0 tCH tAC tLZ tAC tOH
DOUT m (1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1 BANK 0 OR 1 BANK 1 BANK 0
NO PRE
NO PRE NO PRE BANK 1 BANK 0 tQMD tAC tOH
DOUT m+1 DOUT n
tAC tOH
tAC tOH
DOUT o
tOH
DOUT o+1
I/O
tCAC tRCD tRAS tRC tCAC
tCAC tRQL tRP
tHZ
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
69
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Page Mode
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS BANK 0 BANK 0 tCH NO PRE BANK 1 NO PRE BANK 1 NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 BANK 0
(1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH DIN n
tDS
I/O
tRCD tRAS tRC
tDH tDS tDH DIN o DIN o+1
tDPL tRP
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
70
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Page Mode; Data Masking
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 BANK 1 BANK 0 NO PRE BANK 1 BANK 0 BANK 1 BANK 0 NO PRE NO PRE BANK 1 BANK 0 BANK 1OR 0
(1) (1) (1)
A0-A9 A10 A11 DQM
COLUMN m
COLUMN n
COLUMN o AUTO PRE BANK 0 AND 1
tCS
tCH
tDS
tDH tDS DIN m
tDH tDS DIN m+1
tDH DIN n
tDS
I/O
tRCD tRAS tRC
tDH tDS tDH DIN o DIN o+1
tDPL tRP
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
71
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Clock Suspend
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL tCKS tCKH
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS NO PRE BANK 1 BANK 0 tQMD BANK 0 OR 1 BANK 1 tCH tAC tAC tOH tOH
DOUT m+1 DOUT m (1)
A0-A9 A10 A11 DQM
COLUMN m AUTO PRE BANK 0 AND 1
BANK 0
I/O
tLZ tRCD tRAS tRC tCAC
tHZ tRP
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
72
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Clock Suspend
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL tCKS tCKH
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 tCS NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 BANK 0
(1)
A0-A9 A10 A11 DQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW
ROW BANK 1 BANK 0
tCH
tDS
tDH DIN m
tDS DIN m+1
tDH
I/O
tRCD tRAS tRC
tDPL tRP tRAS tRC
Undefined
CAS latency = 3, burst length = 2
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
73
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Precharge Termination
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tQMD tAC BANK 0 OR 1 BANK 0 tCH BANK 0 ROW BANK 1
(1)
A0-A9 A10 A11 DQM
COLUMN m
ROW
tAC tOH
DOUT m
tAC tOH
DOUT m+1
tHZ tOH
DOUT m+2
I/O
tLZ tRCD tRAS tRC tCAC
tRQL tRP
tRCD tRAS tRP
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
74
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Precharge Termination
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 0 tCS NO PRE BANK 0 tCH BANK 0 OR 1 BANK 0 tCS tCH BANK 0 ROW BANK 1
(1)
A0-A9 A10 A11 DQM
COLUMN m
ROW
tDS
tDH tDS
DIN 0m DIN 0m+1
tDH tDS
DIN 0m+2
tDH
I/O
tRCD tRAS tRC
tRCD tRP tRAS tRP
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
75
IS42S16100
ISSI
T1
tCHI
(R)
Read Cycle / Byte Operation
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 tCS tQMD tQMD tCH BANK 0 OR 1 BANK 1 BANK 0 BANK 0
(1)
A0-A9 A10 A11 UDQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW ROW BANK 1
tCS
tCH
LDQM
tAC tLZ tHZ tOH
DOUT m
tAC tLZ
tAC
DOUT m+2
tHZ tOH
DOUT m+3
I/O8-15
tAC tLZ
tAC tOH
DOUT m
tHZ tOH
DOUT m+1
I/O0-7
tRCD tRAS tRC tCAC
tQMD
tRQL tRP
tRCD tRAS tRP
Undefined
CAS latency = 3, burst length = 4
Don't Care
Note 1: A8,A9 = Don't Care.
76
Integrated Silicon Solution, Inc. -- 1-800-379-4774
Rev. A 09/29/00
IS42S16100
ISSI
T1
tCHI
(R)
Write Cycle / Byte Operation
T0 CLK
tCKS tCK tCKA tCH tCS tCH tCH tCH tCL
T2
T3
T4
T5
T6
T7
T8
T9
T10
T11
T12
CKE
tCS
CS RAS
tCS
CAS
tCS
WE
tAS tAH ROW tAS tAH ROW tAS tAH BANK 1 BANK 0 NO PRE BANK 1 BANK 0 BANK 0 OR 1 BANK 1 tCH BANK 0 BANK 0
(1)
A0-A9 A10 A11 UDQM
COLUMN m AUTO PRE BANK 0 AND 1
ROW ROW BANK 1
tCS
tCS
tCH
LDQM
tDS tDS tDH DIN m tDS tDH DIN m tRCD tRAS tRC DIN m+1 tDS DIN m+3 tDPL tRP tRCD tRAS tRP tDH tDS DIN m+3 tDH tDH
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