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128K x 36, 256K x 18 3.3V Synchronous SRAMs 3.3V I/O, Pipelined Outputs Burst Counter, Single Cycle Deselect
x x
IDT71V35761 IDT71V35781
Features
128K x 36, 256K x 18 memory configurations Supports high system speed: Commercial: - 200MHz 3.1ns clock access time Commercial and Industrial: - 183MHz 3.3ns clock access time - 166MHz 3.5ns clock access time LBO input selects interleaved or linear burst mode Self-timed write cycle with global write control (GW), byte write enable (BWE), and byte writes (BWx) 3.3V core power supply Power down controlled by ZZ input 3.3V I/O Packaged in a JEDEC Standard 100-pin plastic thin quad flatpack (TQFP), 119 ball grid array (BGA) and 165 fine pitch ball grid array
Description
The IDT71V35761/781 are high-speed SRAMs organized as 128K x 36/256K x 18. The IDT71V35761/781 SRAMs contain write, data, address and control registers. Internal logic allows the SRAM to generate a self-timed write based upon a decision which can be left until the end of the write cycle. The burst mode feature offers the highest level of performance to the system designer, as the IDT71V35761/81 can provide four cycles of data for a single address presented to the SRAM. An internal burst address counter accepts the first cycle address from the processor, initiating the access sequence. The first cycle of output data will be pipelined for one cycle before it is available on the next rising clock edge. If burst mode operation is selected (ADV=LOW), the subsequent three cycles of output data will be available to the user on the next three rising clock edges. The order of these three addresses are defined by the internal burst counter and the LBO input pin. The IDT71V35761/781 SRAMs utilize IDT's latest high-performance CMOS process and are packaged in a JEDEC standard 14mm x 20mm 100-pin thin plastic quad flatpack (TQFP) as well as a 119 ball grid array (BGA) and 165 fine pitch ball grid array.
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x x x x
Pin Description Summary
A0-A17 CE CS0, CS1 OE GW BWE BW1, BW2, BW3, BW4(1) CLK ADV ADSC ADSP LBO ZZ I/O0-I/O31, I/OP1-I/OP4 VDD, VDDQ VSS Address Inputs Chip Enable Chip Selects Output Enable Global Write Enable Byte Write Enable Individual Byte Write Selects Clock Burst Address Advance Address Status (Cache Controller) Address Status (Processor) Linear / Interleaved Burst Order Sleep Mode Data Input / Output Core Power, I/O Power Ground Input Input Input Input Input Input Input Input Input Input Input Input Input I/O Supply Supply Synchronous Synchronous Synchronous Asynchronous Synchronous Synchronous Synchronous N/A Synchronous Synchronous Synchronous DC Asynchronous Synchronous N/A N/A
5301 tbl 01
NOTE: 1. BW3 and BW4 are not applicable for the IDT71V35781.
APRIL 2003
1
(c)2000 Integrated Device Technology, Inc. DSC-5301/02
11 IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Definitions(1)
Symbol A0-A17 ADSC ADSP ADV Pin Function Address Inputs Address Status (Cache Controller) Address Status (Processor) Burst Address Advance Byte Write Enable I/O I I I I Active N/A LOW LOW LOW Description Synchronous Address inputs. The address register is trig gered by a combination of the rising edge of CLK and ADSC Low or ADSP Low and CE Low. Synchronous Address Status from Cache Controller. ADSC is an active LOW input that is used to load the address registers with new addresses. Synchronous Address Status from Processor. ADSP is an active LOW input that is used to load the address registers with new addresses. ADSP is gated by CE. Synchronous Address Advance. ADV is an active LOW input that is used to advance the internal burst counter, controlling burst access after the initial address is loaded. When the input is HIGH the burst counter is not incremented; that is, there is no address advance. Synchronous byte write enable gates the byte write inputs BW1-BW4. If BWE is LOW at the rising edge of CLK then BWx inputs are passed to the next stage in the circuit. If BWE is HIGH then the byte write inputs are blocked and only GW can initiate a write cycle. Synchronous byte write enables. BW1 controls I/O0-7, I/OP1, BW2 controls I/O8-15, I/OP2, etc. Any active byte write causes all outputs to be disabled. Synchronous chip enable. CE is used with CS0 and CS1 to enable the IDT71V35761/781. CE also gates ADSP. This is the clock input. All timing references for the device are made with respect to this input. Synchrono us active HIGH chip select. CS0 is used with CE and CS1 to enable the chip. Synchronous active LOW chip select. CS1 is used with CE and CS0 to enable the chip. Synchronous global write enable. This input will write all four 9-bit data bytes when LOW on the rising edge of CLK. GW supersedes individual byte write enables. Synchro nous data input/output (I/O) pins. Both the data input path and data output path are registered and triggered by the rising edge of CLK. Asynchronous burst order selection input. When LBO is HIGH, the interleaved burst sequence is selected. When LBO is LOW the Line ar burst sequence is selected. LBO is a static input and must not change state while the device is operating. Asynchronous output enable. When OE is LOW the data output drivers are enabled on the I/O pins if the chip is also selected. When OE is HIGH the I/O pins are in a highimpedance state. 3.3V core power supply. 3.3V I/O Supply. Ground. NC pins are not electrically connected to the device. Asynchro nous sleep mode input. ZZ HIGH will gate the CLK internally and power down the IDT71V35761/781 to its lowest p ower consumption level. Data retention is guaranteed in Sleep Mode.
5301tbl 02
BWE
I
LOW
BW1-BW4 CE CLK CS0 CS1 GW I/O0-I/O31 I/OP1-I/OP4 LBO
Individual Byte Write Enables Chip Enable Clock Chip Select 0 Chip Select 1 Global Write Enable Data Input/Output Linear Burst Order
I I I I I I I/O I
LOW LOW N/A HIGH LOW LOW N/A LOW
OE
Output Enable
I
LOW
VDD VDDQ VSS NC ZZ
Power Supply Power Supply Ground No Connect Sleep Mode
N/A N/A N/A N/A I
N/A N/A N/A N/A HIGH
NOTE: 1. All synchronous inputs must meet specified setup and hold times with respect to CLK.
6.42 2
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Functional Block Diagram
LBO ADV
CEN Burst Sequence INTERNAL ADDRESS
CLK ADSC ADSP
CLK EN ADDRESS REGISTER Byte 1 Write Register Binary Counter CLR
2
Burst Logic
17/18 A0* A1*
Q0 Q1
128K x 36/ 256K x 18BIT MEMORY ARRAY
2 17/18
A0 - A16/17 GW BWE BW1
A0,A1
A2-A17
36/18
36/18
Byte 1 Write Driver
9
Byte 2 Write Register Byte 2 Write Driver
BW2
Byte 3 Write Register
9
Byte 3 Write Driver
BW3
Byte 4 Write Register
9
Byte 4 Write Driver
BW4
9
OUTPUT REGISTER
CE CS0 CS1
D
Q Enable Register
DATA INPUT REGISTER
CLK EN
ZZ
Powerdown D Q Enable Delay Register
OE OUTPUT BUFFER
OE I/O0 -- I/O31 I/OP1 -- I/OP4
36/18
,
5301 drw 01
6.42 3
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Absolute Maximum Ratings(1)
Symbol VTERM
(2)
Rating Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Terminal Voltage with Respect to GND Commercial Operating Temperature Industrial Operating Temperature
Commercial & Industrial -0.5 to +4.6 -0.5 to VDD -0.5 to VDD +0.5 -0.5 to VDDQ +0.5 -0 to +70 -40 to +85 -55 to +125 -55 to +125 2.0 50
Recommended Operating Temperature and Supply Voltage
Unit V V V V
o
Grade Commercial Industrial
Temperature(1) 0C to +70C -40C to +85C
VSS 0V 0V
VDD 3.3V5% 3.3V5%
VDDQ 3.3V5% 3.3V5%
5301 tbl 04
VTERM(3,6) VTERM(4,6) VTERM(5,6)
NOTES: 1. TA is the "instant on" case temperature.
Recommended DC Operating Conditions
Symbol VDD Parameter Core Supply Voltage I/O Supply Voltage Supply Voltage Input High Voltage - Inputs Input High Voltage - I/O Input Low Voltage Min. 3.135 3.135 0 2.0 2.0 -0.3(2) Typ. 3.3 3.3 0
____
C C
Max. 3.465 3.465 0 VDD +0.3 VDDQ +0.3 0.8
(1)
Unit V V V V V V
5301 tbl 06
TA(7)
o
VDDQ
o
TBIAS TSTG PT IOUT
Temperature Under Bias Storage Temperature Power Dissipation DC Output Current
C C
VSS VIH
o
VIH VIL
____
____
W mA
5301 tbl 03
NOTES: 1. VIH (max) = VDDQ + 1.0V for pulse width less than tCYC/2, once per cycle. 2. VIL (min) = -1.0V for pulse width less than tCYC/2, once per cycle.
NOTES: 1. Stresses 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. VDD terminals only. 3. VDDQ terminals only. 4. Input terminals only. 5. I/O terminals only. 6. This is a steady-state DC parameter that applies after the power supplies have ramped up. Power supply sequencing is not necessary; however, the voltage on any input or I/O pin cannot exceed VDDQ during power supply ramp up. 7. TA is the "instant on" case temperature.
100 Pin TQFP Capacitance
(TA = +25C, f = 1.0MHz)
Symbol CIN CI/O Parameter
(1)
119 BGA Capacitance
(TA = +25C, f = 1.0MHz)
Max. 5 7 Unit pF pF
5301 tbl 07
Conditions VIN = 3dV VOUT = 3dV
Symbol CIN CI/O
Parameter(1) Input Capacitance I/O Capacitance
Conditions VIN = 3dV VOUT = 3dV
Max. 7 7
Unit pF pF
5301 tbl 07a
Input Capacitance I/O Capacitance
165 fBGA Capacitance
(TA = +25C, f = 1.0MHz)
Symbol CIN CI/O Parameter(1) Input Capacitance I/O Capacitance Conditions VIN = 3dV VOUT = 3dV Max. 7 7 Unit pF pF
5301 tbl 07b
NOTE: 1. This parameter is guaranteed by device characterization, but not production tested.
6.42 4
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration 128K x 36
A6 A7 CE CS0 BW4 BW3 BW2 BW1 CS1 VDD VSS CLK GW BWE OE ADSC ADSP ADV A8 A9
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
5301 drw 02
I/OP3 I/O16 I/O17 VDDQ VSS I/O18 I/O19 I/O20 I/O21 VSS VDDQ I/O22 I/O23 VDD / NC(1) VDD NC VSS I/O24 I/O25 VDDQ VSS I/O26 I/O27 I/O28 I/O29 VSS VDDQ I/O30 I/O31 I/OP4
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
I/OP2 I/O15 I/O14 VDDQ VSS I/O13 I/O12 I/O11 I/O10 VSS VDDQ I/O9 I/O8 VSS NC VDD ZZ(3) I/O7 I/O6 VDDQ VSS I/O5 I/O4 I/O3 I/O2 VSS VDDQ I/O1 I/O0 I/OP1
,
LBO A5 A4 A3 A2 A1 A0
NOTES: 1. Pin 14 can either be directly connected to VDD, or connected to an input voltage VIH, or left unconnected. 2. Pins 38 and 39 can be either NC or connected to VSS. 3. Pin 64 can be left unconnected and the device will always remain in active mode.
NC(2) NC(2) VSS VDD NC NC A10 A11 A12 A13 A14 A15 A16
100 TQFP Top View
6.42 5
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration 256K x 18
CS0 NC NC BW2 BW1 CS1 VDD VSS CLK GW BWE OE ADSC ADSP ADV A8 A9 A6 A7 CE
NC NC NC VDDQ VSS NC NC I/O8 I/O9 VSS VDDQ I/O10 I/O11 VDD / NC(1) VDD NC VSS I/O12 I/O13 VDDQ VSS I/O14 I/O15 I/OP2 NC VSS VDDQ NC NC NC
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 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
5301 drw 03
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
A10 NC NC VDDQ VSS NC I/OP1 I/O7 I/O6 VSS VDDQ I/O5 I/O4 VSS NC VDD ZZ(3) I/O3 I/O2 VDDQ VSS I/O1 I/O0 NC NC VSS VDDQ NC NC NC
,
LBO A5 A4 A3 A2 A1 A0 NC(2)
100 TQFP Top View
NOTES: 1. Pin 14 can either be directly connected to VDD, or connected to an input voltage VIH, or left unconnected. 2. Pins 38 and 39 can be either NC or connected to VSS. 3. Pin 64 can be left unconnected and the device will always remain in active mode.
NC(2) VSS VDD NC NC A11 A12 A13 A14 A15 A16 A17
6.42 6
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration 128K x 36, 119 BGA
1 A B C D E F G H J K L M N P R T U VDDQ NC NC I/O16 I/O17 VDDQ I/O20 I/O22 VDDQ I/O24 I/O25 VDDQ I/O29 I/O31 NC NC VDDQ 2 A6 CS0 A7 I/OP3 I/O18 I/O19 I/O21 I/O23 VDD I/O26 I/O27 I/O28 I/O30 I/OP4 A5 NC DNU(4) 3 A4 A3 A2 VSS VSS VSS BW3 VSS NC VSS BW4 VSS VSS VSS LBO A10 DNU(4) 4 ADSP ADSC VDD NC CE OE ADV GW VDD CLK NC(2) BWE A1 A0 VDD A11 DNU(2,4) 5 A8 A9 A12 VSS VSS VSS BW 2 VSS NC VSS BW1 VSS VSS VSS VDD / NC(1) 6 A16 CS1 A15 I/OP2 I/O13 I/O12 I/O11 I/O9 VDD I/O6 I/O4 I/O3 I/O2 I/O0 A13 NC DNU(4) 7 VDDQ NC NC I/O15 I/O14 VDDQ I/O10 I/O8 VDDQ I/O7 I/O5 VDDQ I/O1 I/OP1 NC ZZ(3) VDDQ
5301 drw 04
A14 DNU(4)
,
Top View Pin Configuration 256K x 18, 119 BGA
1 A B C D E F G H J K L M N P R T U VDDQ NC NC I/O8 NC VDDQ NC I/O11 VDDQ NC I/O13 VDDQ I/O15 NC NC NC VDDQ 2 A6 CS0 A7 NC I/O9 NC I/O10 NC VDD I/O12 NC I/O14 NC I/OP2 A5 A10 DNU(4) 3 A4 A3 A2 VSS VSS VSS BW2 VSS NC VSS VSS VSS VSS VSS LBO A15 DNU(4) 4 ADSP ADSC VDD NC CE OE ADV GW VDD CLK NC(2) BWE A1 A0 VDD NC DNU(2,4) 5 A8 A9 A13 VSS VSS VSS VSS VSS NC VSS BW1 VSS VSS VSS VDD / NC(1) A14 DNU(4) 6 A16 CS1 A17 I/O7 NC I/O5 NC I/O3 VDD NC I/O1 NC I/O0 NC A12 A11 DNU(4)
7 VDDQ NC NC NC I/O6 VDDQ I/O4 NC VDDQ I/O2 NC VDDQ NC I/OP1 NC ZZ(3) VDDQ
5301 drw 05
,
NOTES: 1. R5 can either be directly connected to VDD, or connected to an input voltage VIH, or left unconnected. 2. L4 and U4 can be either NC or connected to VSS. 3. T7 can be left unconnected and the device will always remain in active mode. 4. DNU = Do not use; Pins U2, U3, U4, U5 and U6 are reserved for respective JTAG pins: TMS, TDI, TCK, TDO and TRST on future revisions. Within this current version, these pins are not connected.
Top View
6.42 7
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Pin Configuration 128K x 36, 165 fBGA
1 A B C D E F G H J K L M N P R NC(4) NC I/OP3 I/O17 I/O19 I/O21 I/O23 VDD(1) I/O25 I/O27 I/O29 I/O31 I/OP4 NC LBO 2 A7 A6 NC I/O16 I/O18 I/O20 I/O22 NC(2) I/O24 I/O26 I/O28 I/O30 NC NC(4) NC(4) 3 CE1 CS0 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A5 A4 4 BW3 BW4 VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A2 A3 5 BW2 BW1 VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS DNU(5) DNU(5) DNU(5) 6 CS1 CLK VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC(4) A1 A0 7 BWE GW VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC(2) DNU(5) DNU(5) 8 ADSC OE VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A10 A11 9 ADV ADSP VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A13 A12 10 A8 A9 NC I/O15 I/O13 I/O11 I/O9 NC I/O7 I/O5 I/O3 I/O1 NC A14 A15 11 NC NC(4) I/OP2 I/O14 I/O12 I/O10 I/O8 ZZ(3) I/O6 I/O4 I/O2 I/O0 I/OP1 NC(4) A16
5301 tbl 17
Pin Configuration 256K x 18, 165 fBGA
1 A B C D E F G H J K L M N P R NC
(4)
2 A7 A6 NC I/O8 I/O9 I/O10 I/O11 NC(2) NC NC NC NC NC NC
(4)
3 CE1 CS0 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A5 A4
4 BW2 NC VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A2 A3
5 NC BW1 VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS DNU(5) DNU
(5)
6 CS1 CLK VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC(4) A1 A0
7 BWE GW VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC(2) DNU
(5)
8 ADSC OE VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A11 A12
9 ADV ADSP VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A14 A13
10 A8 A9 NC NC NC NC NC NC I/O3 I/O2 I/O1 I/O0 NC A15 A16
11 A10 NC(4) I/OP1 I/O7 I/O6 I/O5 I/O4 ZZ(3) NC NC NC NC NC NC(4) A17
5301 tbl 17a
NC NC NC NC NC NC VDD(1) I/O12 I/O13 I/O14 I/O15 I/OP2 NC LBO
NC(4)
DNU(5)
DNU(5)
NOTES: 1. H1 can either be directly connected to VDD, or connected to an input voltage VIH, or left unconnected. 2. H2 and N7 can be either NC or connected to VSS. 3. H11 can be left unconnected and the device will always remain in active mode. 4. Pins P11, N6, B11, A1, R2 and P2 are reserved for 9M, 18M, 36M, 72M, 144M and 288M respectively. 5. DNU = Do not use; Pins P5, P7, R5, R7 and N5 are reserved for respective JTAG Pins: TDI, TDO, TMS, TCK and TRST on future revisions. Within the current version these pins are not connected.
6.42 8
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range (VDD = 3.3V 5%)
Symbol |ILI| |ILZZ| |ILO| VOL VOH Parameter Input Leakage Current ZZ and LBO Input Leakage Current(1) Output Leakage Current Output Low Voltage Output High Voltage Test Conditions VDD = Max., VIN = 0V to VDD VDD = Max., VIN = 0V to VDD VOUT = 0V to VDDQ, Device Deselected IOL = +8mA, VDD = Min. IOH = -8mA, VDD = Min. Min.
___
Max. 5 30 5 0.4
___
Unit A A A V V
5301 tbl 08
___ ___
___
2.4
NOTE: 1. The LBO pin will be internally pulled to VDD if it is not actively driven in the application and the ZZ pin will be internally pulled to VSS if not actively driven.
DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range(1)
200MHz Symbol IDD ISB1 ISB2 IZZ Parameter Operating Power Supply Current CMOS Standby Power Supply Current Clock Running Power Supply Current Full Sleep Mode Supply Current Test Conditions Device Selected, Outputs Open, VDD = Max., VDDQ = Max., VIN > VIH or < VIL, f = fMAX(2) Device Deselected, Outputs Open, VDD = Max., VDDQ = Max., VIN > VHD or < VLD, f = 0(2,3) Device Deselected, Outputs Open, VDD = Max., VDDQ = Max., VIN > VHD or < VLD, f = fMAX(2,3) ZZ > VHD, VDD = Max. Com'l 360 30 130 30 183MHz Com'l 340 30 120 30 Ind 350 35 130 35 166 MHz Com'l 320 30 110 30 Ind 330 35 120 35 Unit mA mA mA mA
5301 tbl 09
NOTES: 1. All values are maximum guaranteed values. 2. At f = fMAX, inputs are cycling at the maximum frequency of read cycles of 1/tCYC while ADSC = LOW; f=0 means no input lines are changing. 3. For I/Os VHD = VDDQ - 0.2V, VLD = 0.2V. For other inputs VHD = VDD - 0.2V, VLD = 0.2V.
AC Test Conditions
(VDDQ = 3.3V)
Input Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Timing Reference Levels AC Test Load 0 to 3V 2ns 1.5V 1.5V See Figure 1
5301 tbl 10
AC Test Load
I/O Z0 = 50
VDDQ/2 50 ,
5301 drw 06
Figure 1. AC Test Load
6 5 4 tCD 3 (Typical, ns) 2 1 20 30 50 80 100 Capacitance (pF) 200
5301 drw 07
,
Figure 2. Lumped Capacitive Load, Typical Derating
6.42 9
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Synchronous Truth Table(1,3)
Operation De se le cte d Cycle , Po we r Do wn De se le cte d Cycle , Po we r Do wn De se le cte d Cycle , Po we r Do wn De se le cte d Cycle , Po we r Do wn De se le cte d Cycle , Po we r Do wn Re ad Cycle , Be g in B urst Re ad Cycle , Be g in B urst Re ad Cycle , Be g in B urst Re ad Cycle , Be g in B urst Re ad Cycle , Be g in B urst Write Cycle , Be g in Burst Write Cycle , Be g in Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Re ad Cycle , Co ntinue Burst Write Cycle , Co ntinue Burst Write Cycle , Co ntinue Burst Write Cycle , Co ntinue Burst Write Cycle , Co ntinue Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Re ad Cycle , Susp e nd Burst Write Cycle , S usp e nd Burst Write Cycle , S usp e nd Burst Write Cycle , S usp e nd Burst Write Cycle , S usp e nd Burst
NOTES: 1. L = VIL, H = VIH, X = Don't Care. 2. OE is an asynchronous input. 3. ZZ = low for this table.
Address Used No ne No ne No ne No ne No ne Exte rnal Exte rnal Exte rnal Exte rnal Exte rnal Exte rnal Exte rnal Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Ne xt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt Curre nt
CE H L L L L L L L L L L L X X X X H H H H X X H H X X X X H H H H X X H H
CS0 X X L X L H H H H H H H X X X X X X X X X X X X X X X X X X X X X X X X
CS1 X H X H X L L L L L L L X X X X X X X X X X X X X X X X X X X X X X X X
ADSP X L L X X L L H H H H H H H H H X X X X H H X X H H H H X X X X H H X X
ADSC L X X L L X X L L L L L H H H H H H H H H H H H H H H H H H H H H H H H
ADV X X X X X X X X X X X X L L L L L L L L L L L L H H H H H H H H H H H H
GW X X X X X X X H H H H L H H H H H H H H H L H L H H H H H H H H H L H L
BWE X X X X X X X H L L L X H H X X H H X X L X L X H H X X H H X X L X L X
BWx X X X X X X X X H H L X X X H H X X H H L X L X X X H H X X H H L X L X
OE (2) X X X X X L H L L H X X L H L H L H L H X X X X L H L H L H L H X X X X
CLK -
I/O HI-Z HI-Z HI-Z HI-Z HI-Z DOUT HI-Z DOUT DOUT HI-Z DIN DIN DOUT HI-Z DOUT HI-Z DOUT HI-Z DOUT HI-Z DIN DIN DIN DIN DOUT HI-Z DOUT HI-Z DOUT HI-Z DOUT HI-Z DIN DIN DIN DIN
5301tbl 11
6.42 10
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Synchronous Write Function Truth Table(1, 2)
Operation Read Read Write all Bytes Write all Bytes Write Byte 1
(3) (3) (3) (3)
GW H H L H H H H H
BWE H L X L L L L L
BW1 X H X L L H H H
BW2 X H X L H L H H
BW3 X H X L H H L H
BW4 X H X L H H H L
5301 tbl 12
Write Byte 2 Write Byte 3 Write Byte 4
NOTES: 1. L = VIL, H = VIH, X = Don't Care. 2. BW3 and BW4 are not applicable for the IDT71V35781. 3. Multiple bytes may be selected during the same cycle.
Asynchronous Truth Table(1)
Operation(2) Read Read Write Deselected Sleep Mode OE L H X X X ZZ L L L L H I/O Status Data Out High-Z High-Z - Data In High-Z High-Z Power Active Active Active Standby Sleep
5301 tbl 13
NOTES: 1. L = VIL, H = VIH, X = Don't Care. 2. Synchronous function pins must be biased appropriately to satisfy operation requirements.
Interleaved Burst Sequence Table (LBO=VDD)
Sequence 1 A1 First Address Second Address Third Address Fourth Address (1) 0 0 1 1 A0 0 1 0 1 Sequence 2 A1 0 0 1 1 A0 1 0 1 0 Sequence 3 A1 1 1 0 0 A0 0 1 0 1 Sequence 4 A1 1 1 0 0 A0 1 0 1 0
5301 tbl 14
NOTE: 1. Upon completion of the Burst sequence the counter wraps around to its initial state.
Linear Burst Sequence Table (LBO=VSS)
Sequence 1 A1 First Address Second Address Third Address Fourth Address (1) 0 0 1 1 A0 0 1 0 1 Sequence 2 A1 0 1 1 0 A0 1 0 1 0 Sequence 3 A1 1 1 0 0 A0 0 1 0 1 Sequence 4 A1 1 0 0 1 A0 1 0 1 0
5301 tbl 15
NOTE: 1. Upon completion of the Burst sequence the counter wraps around to its initial state.
6.42 11
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
AC Electrical Characteristics
(VDD = 3.3V 5%, Commercial and Industrial Temperature Ranges)
200MHz(5) Symbol Parameter Min. Max. 183MHz Min. Max. 166MHz Min. Max. Unit
tCYC tCH(1) tCL(1)
Clock Cycle Time Clock High Pulse Width Clock Low Pulse Width
5 2 2
-- -- --
5.5 2.2 2.2
-- -- --
6 2.4 2.4
-- -- --
ns ns ns
Output Parameters
tCD tCDC tCLZ(2) tCHZ(2) tOE tOLZ(2) tOHZ(2) Clock High to Valid Data Clock High to Data Change Clock High to Output Active Clock High to Data High-Z Output Enable Access Time Output Enable Low to Output Active Output Enable High to Output High-Z -- 1.0 0 1.5 -- 0 -- 3.1 -- -- 3.1 3.1 -- 3.1 -- 1.0 0 1.5 -- 0 -- 3.3 -- -- 3.3 3.3 -- 3.3 -- 1.0 0 1.5 -- 0 -- 3.5 -- -- 3.5 3.5 -- 3.5 ns ns ns ns ns ns ns
Set Up Times
tSA tSS tSD tSW tSAV tSC Address Setup Time Address Status Setup Time Data In Setup Time Write Setup Time Address Advance Setup Time Chip Enable/Select Setup Time 1.2 1.2 1.2 1.2 1.2 1.2 -- -- -- -- -- -- 1.5 1.5 1.5 1.5 1.5 1.5 -- -- -- -- -- -- 1.5 1.5 1.5 1.5 1.5 1.5 -- -- -- -- -- -- ns ns ns ns ns ns
Hold Times
tHA tHS tHD tHW tHAV tHC Address Hold Time Address Status Hold Time Data In Hold Time Write Hold Time Address Advance Hold Time Chip Enable/Select Hold Time 0.4 0.4 0.4 0.4 0.4 0.4 -- -- -- -- -- -- 0.5 0.5 0.5 0.5 0.5 0.5 -- -- -- -- -- -- 0.5 0.5 0.5 0.5 0.5 0.5 -- -- -- -- -- -- ns ns ns ns ns ns
Sleep Mode and Configuration Parameters
tZZPW tZZR(3) tCFG (4) ZZ Pulse Width ZZ Recovery Time Configuration Set-up Time 100 100 20 -- -- -- 100 100 22 -- -- -- 100 100 24 -- -- -- ns ns ns
5301tbl 16
NOTES: 1. Measured as HIGH above VIH and LOW below VIL. 2. Transition is measured 200mV from steady-state. 3. Device must be deselected when powered-up from sleep mode. 4. tCFG is the minimum time required to configure the device based on the LBO input. LBO is a static input and must not change during normal operation. 5. Commercial temperature range only.
6.42 12
tCYC
CLK tCH tCL
tSS tHS
ADSP
(1)
ADSC tHA Ax tSW tHW Ay
tSA
ADDRESS
GW,BWE,BWx tHC tSAV tHAV
tSC
CE, CS1
(Note 3)
ADV tOE tCD tOHZ tCDC
O1(Ay) O2(Ay) O3(Ay) O1(Ax)
ADV HIGH suspends burst
Timing Waveform of Pipelined Read Cycle(1,2)
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
6.42 13
tOLZ tCLZ Pipelined Read
OE
(Burst wraps around to its initial state)
tCHZ
O4(Ay) O1(Ay) O2(Ay)
DATAOUT
Output Disabled
Burst Pipelined Read
5301 drw 08
NOTES: 1. O1 (Ax) represents the first output from the external address Ax. O1 (Ay) represents the first output from the external address Ay; O2 (Ay) represents the next output data in the burst sequence of the base address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input. 2. ZZ input is LOW and LBO is Don't Care for this cycle. 3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
,
tCYC
CLK tCH tCL
(2)
tSS tHS
ADSP
tSA tHA Ax Ay tSW tHW Az
ADDRESS
GW
ADV
OE tSD tHD tOE tCD tCLZ O1(Ax) tOHZ I1(Ay) tOLZ
Timing Waveform of Combined Pipelined Read and Write Cycles(1,2,3)
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
6.42 14
DATAIN
tCDC O1(Az) tCD O2(Az) O3(Az)
DATAOUT
Single Read
Pipelined Write
Pipelined Burst Read
5301 drw 09
NOTES: 1. Device is selected through entire cycle; CE and CS1 are LOW, CS0 is HIGH. 2. ZZ input is LOW and LBO is Don't Care for this cycle. 3. O1 (Ax) represents the first output from the external address Ax. I1 (Ay) represents the first input from the external address Ay; O1 (Az) represents the first output from the external address Az; O2 (Az) represents the next output data in the burst sequence of the base address Az, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input.
,
tCYC
CLK tCH tCL
tSS tHS
ADSP
ADSC
tSA tHA Ax
GW is ignored when ADSP initiates a cycle and is sampled on the next clock rising edge
ADDRESS Ay Az tHW tSW
GW
tSC
tHC
CE, CS1 tSAV tHAV
(Note 3)
ADV
(ADV HIGH suspends burst)
Timing Waveform of Write Cycle No. 1 - GW Controlled(1,2,3)
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
6.42 15
I1(Ax) I2(Ay) tOHZ I1(Ay) I2(Ay) Burst Write Single Write
OE tSD I3(Ay) I4(Ay) I1(Az)
tHD
DATAIN
I2(Az)
I3(Az)
DATAOUT
O3(Aw)
O4(Aw)
Burst Read
Burst Write
5301 drw 10
,
NOTES: 1. ZZ input is LOW, BWE is HIGH and LBO is Don't Care for this cycle. 2. O4 (Aw) represents the final output data in the burst sequence of the base address Aw. I1 (Ax) represents the first input from the external address Ax. I1 (Ay) represents the first input from the external address Ay; I2 (Ay) represents the next input data in the burst sequence of the base address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input. In the case of input I2 (Ay) this data is valid for two cycles because ADV is high and has suspended the burst. 3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
tCYC
CLK tCH tCL
tSS tHS
ADSP
ADSC
tSA tHA Ax
BWE is ignored when ADSP initiates a cycle and is sampled on next clock rising edge
ADDRESS
Ay Az
tHW tSW
BWE
BWx is ignored when ADSP initiates a cycle and is sampled on next clock rising edge
tHW tSW
BWx
tSC
tHC
CE, CS1 tSAV
(Note 3)
Timing Waveform of Write Cycle No. 2 - Byte Controlled(1,2,3)
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
6.42 16
(ADV suspends burst)
ADV
OE tSD I1(Ax) tOHZ O4(Aw) Single Write Burst Write Extended Burst Write
5301 drw 11
tHD
DATAIN
I1(Ay)
I2(Ay)
I2(Ay)
I3(Ay)
I4(Ay)
I1(Az)
I2(Az)
I3(Az)
DATAOUT
O3(Aw)
Burst Read
,
NOTES: 1. ZZ input is LOW, GW is HIGH and LBO is Don't Care for this cycle. 2. O4 (Aw) represents the final output data in the burst sequence of the base address Aw. I1 (Ax) represents the first input from the external address Ax. I1 (Ay) represents the first input from the external address Ay; I2 (Ay) represents the next input data in the burst sequence of the base address Ay, etc. where A0 and A1 are advancing for the four word burst in the sequence defined by the state of the LBO input. In the case of input I2 (Ay) this data is valid for two cycles because ADV is high and has suspended the burst. 3. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
tCYC
CLK tCH tCL
tSS
tHS
ADSP
ADSC tHA Ax Az
tSA
ADDRESS
GW tHC
tSC
CE, CS1
(Note 4)
Timing Waveform of Sleep (ZZ) and Power-Down Modes(1,2,3)
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
6.42 17
tOE tOLZ
O1(Ax)
tZZPW
ADV
OE
DATAOUT
tZZR
ZZ
Single Read
Snooze Mode
5301 drw 12
,
NOTES: 1. Device must power up in deselected Mode 2. LBO is Don't Care for this cycle. 3. It is not necessary to retain the state of the input registers throughout the Power-down cycle. 4. CS0 timing transitions are identical but inverted to the CE and CS1 signals. For example, when CE and CS1 are LOW on this waveform, CS0 is HIGH.
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Non-Burst Read Cycle Timing Waveform
CLK
ADSP
ADSC
ADDRESS
Av
Aw
Ax
Ay
Az
GW, BWE, BWx
CE, CS1
CS0
OE
DATAOUT
(Av)
(Aw)
(Ax)
(Ay)
5301 drw 14
,
NOTES: 1. ZZ input is LOW, ADV is HIGH and LBO is Don't Care for this cycle. 2. (Ax) represents the data for address Ax, etc. 3. For read cycles, ADSP and ADSC function identically and are therefore interchangable.
Non-Burst Write Cycle Timing Waveform
CLK
ADSP
ADSC
ADDRESS
Av
Aw
Ax
Ay
Az
GW
CE, CS1
CS0
DATAIN
(Av)
(Aw)
(Ax)
(Ay)
(Az)
NOTES: 1. ZZ input is LOW, ADV and OE are HIGH, and LBO is Don't Care for this cycle. 2. (Ax) represents the data for address Ax, etc. 3. Although only GW writes are shown, the functionality of BWE and BWx together is the same as GW. 4. For write cycles, ADSP and ADSC have different limitations.
,
5301 drw 15
6.42 18
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
100-Pin Thin Plastic Quad Flatpack (TQFP) Package Diagram Outline
6.42 19
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
119 Ball Grid Array (BGA) Package Diagram Outline
6.42 20
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
165 Fine Pitch Ball Grid Array (fBGA) Package Diagram Outline
6.42 21
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Ordering Information
IDT XXX Device Type S Power X Speed XX Package X Process/ Temperature Range
Blank I PF BG BQ 200* 183 166 71V35761 71V35781
Commercial (0C to +70C) Industrial (-40C to +85C) 100-pin Plastic Thin Quad Flatpack (TQFP) 119 Ball Grid Array (BGA) 165 Fine Pitch Ball Grid Array (fBGA) Frequency in Megahertz
,
128K x 36 Pipelined Burst Synchronous SRAM with 3.3V I/O 256K x 18 Pipelined Burst Synchronous SRAM with 3.3V I/O
*Commercial temperature range only 5301 drw 13
6.42 22
IDT71V35761, IDT71V35781, 128K x 36, 256K x 18, 3.3V Synchronous SRAMs with 3.3V I/O, Pipelined Outputs, Burst Counter, Single Cycle Deselect Commercial and Industrial Temperature Ranges
Datasheet Document History
12/31/99 04/04/00 Pg. 1, 4, 8, 11, 19 Pg. 18 Pg. 4
06/01/00 07/15/00 Pg. 20 Pg. 7 Pg. 8 Pg. 20 Pg. 8 Pg.4
10/25/00 04/22/03
Created new datasheet from 71v3576 and 71v3578 datasheet. Added industrial temperature range offering from 166MHz and 183MHz Added 100 pin TQFP package Diagram Outline Add BGA capacitance table; Add industrial tempertaure to table; Insert note to Absolute Max Rating and Recommended Operating Temperature tables Add new package diagram outline, 13 x 15mm 165fBGA Correct BG119 Package Diagram Outline Add note reference to BG119 pinout Add DNU reference note to BQ165 pinout Update BG119 Package Diagram Outline Dimensions Remove Preliminary status Add reference note to N5 on the BQ165 pinout, reserved for JTAG TRST Updated 165 BGA table information from TBD to 7
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for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com
for Tech Support: sramhelp@idt.com 800-544-7726, x4033
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
6.42 23

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