View CY7C1528V18-167BZC_4844344.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
72-Mbit DDR-II SRAM 4-Word Burst Architecture
Features
* 72-Mbit density (8M x 8, 8M x 9, 4M x 18, 2M x 36) * 300-MHz clock for high bandwidth * 4-Word burst for reducing address bus frequency * Double Data Rate (DDR) interfaces (data transferred at 600 MHz) @ 300 MHz * Two input clocks (K and K) for precise DDR timing -- SRAM uses rising edges only * Two input clocks for output data (C and C) to minimize clock-skew and flight-time mismatches * Echo clocks (CQ and CQ) simplify data capture in high-speed systems * Synchronous internally self-timed writes * 1.8V core power supply with HSTL inputs and outputs * Variable drive HSTL output buffers * Expanded HSTL output voltage (1.4V-VDD) * Available in 165-ball FBGA package (15 x 17 x 1.4 mm) * Offered in lead-free and non lead-free packages * JTAG 1149.1 compatible test access port * Delay Lock Loop (DLL) for accurate data placement
Functional Description
The CY7C1517V18, CY7C1528V18, CY7C1519V18 and CY7C1521V18 are 1.8V Synchronous Pipelined SRAM equipped with DDR-II (Double Data Rate) architecture. The DDR-II consists of an SRAM core with advanced synchronous peripheral circuitry and a two-bit burst counter. Addresses for Read and Write are latched on alternate rising edges of the input (K) clock. Write data is registered on the rising edges of both K and K. Read data is driven on the rising edges of C and C if provided, or on the rising edge of K and K if C/C are not provided. Each address location is associated with four 8-bit words in the case of CY7C1517V18 and four 9-bit words in the case of CY7C1528V18 that burst sequentially into or out of the device. The burst counter always starts with "00" internally in the case of CY7C1517V18 and CY7C1528V18. On CY7C1519V18 and CY7C1521V18, the burst counter takes in the last two significant bits of the external address and bursts four 18-bit words in the case of CY7C1519V18, and four 36-bit words in the case of CY7C1521V18, sequentially into or out of the device. Asynchronous inputs include output impedance matching input (ZQ). Synchronous data outputs (Q, sharing the same physical pins as the data inputs, D) are tightly matched to the two output echo clocks CQ/CQ, eliminating the need for separately capturing data from each individual DDR-II SRAM in the system design.Output data clocks (C/C) enable maximum system clocking and data synchronization flexibility. All Synchronous Input Pass through input registers controlled by the K or K input clocks.All data outputs pass through output registers controlled by the C or C (or K or K in a single clock domain) input clocks. Writes are conducted with on-chip synchronous self-timed write circuitry.
Configurations
CY7C1517V18 - 8M x 8 CY7C1528V18 - 8M x 9 CY7C1519V18 - 4M x 18 CY7C1521V18 - 2M x 36
Selection Guide
300 MHz Maximum Operating Frequency Maximum Operating Current 300 950 278 MHz 278 900 250 MHz 250 850 200 MHz 200 750 167 MHz 167 700 Unit MHz mA
Cypress Semiconductor Corporation Document #: 38-05565 Rev. *E
*
198 Champion Court
*
San Jose, CA 95134-1709 * 408-943-2600 Revised September 25, 2006
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Logic Block Diagram (CY7C1517V18)
A(20:0) 21 LD K K DOFF
Write Add. Decode
Read Add. Decode
Address Register
Write Reg
Write Reg
Write Reg
Write Reg
2M x 8 Array
2M x 8 Array
2Mx 8 Array
2M x 8 Array
8 Output Logic Control R/W C C CQ CQ 8 8
CLK Gen.
Read Data Reg. 32 Control Logic 16 Reg. 16 Reg. Reg.
VREF R/W NWS[1:0]
DQ[7:0]
Logic Block Diagram (CY7C1528V18)
A(20:0) 21 LD K K DOFF
Write Add. Decode
Read Add. Decode
Address Register
Write Reg
Write Reg
Write Reg
Write Reg
2M x 9 Array
2M x 9 Array
2M x 9 Array
2M x 9 Array
9 Output Logic Control R/W C C CQ CQ 9 9
CLK Gen.
Read Data Reg. 36 Control Logic 18 Reg. 18 Reg. Reg.
VREF R/W BWS[0]
DQ[8:0]
Document #: 38-05565 Rev. *E
Page 2 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Logic Block Diagram (CY7C1519V18)
A(1:0) 2 22 A(21:0)
20
Burst Logic
Write Add. Decode
Read Add. Decode
Address A(21:2) Register LD
Write Reg
Write Reg
Write Reg
Write Reg
18
4M x 18 Array
K K DOFF
CLK Gen.
Output Logic Control
R/W C C
Read Data Reg. 72 Control Logic 36 Reg. 36 Reg. 18 Reg.
CQ CQ 18 DQ[17:0]
VREF R/W BWS[1:0]
Logic Block Diagram (CY7C1521V18)
A(1:0) 2 21 A(20:0)
19
Burst Logic
Write Add. Decode
Read Add. Decode
Address A(20:2) Register LD
Write Reg
Write Reg
Write Reg
Write Reg
36
2M x 36 Array
K K DOFF
CLK Gen.
Output Logic Control
R/W C C CQ CQ 36 DQ[35:0]
Read Data Reg. 144 Control Logic 72 Reg. 72 Reg. 36 Reg.
VREF R/W BWS[3:0]
Document #: 38-05565 Rev. *E
Page 3 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Pin Configurations[1] 165-ball FBGA (15 x 17 x 1.4 mm) Pinout
CY7C1517V18 (8M x 8)
1 A B C D E F G H J K L M N P R
CQ NC NC NC NC NC NC DOFF NC NC NC NC NC NC TDO
2
A NC NC NC NC NC NC VREF NC NC DQ6 NC NC NC TCK
3
A NC NC NC DQ4 NC DQ5 VDDQ NC NC NC NC NC DQ7 A
4
R/W A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
5
NWS1 NC A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
6
K K NC VSS VSS VSS VSS VSS VSS VSS VSS VSS A C C
7
NC NWS0 A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
8
LD A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
9
A NC NC NC NC NC NC VDDQ NC NC NC NC NC NC A
10
A NC NC NC NC NC NC VREF DQ1 NC NC NC NC NC TMS
11
CQ DQ3 NC NC DQ2 NC NC ZQ NC NC DQ0 NC NC NC TDI
CY7C1528V18 (8M x 9)
1 A B C D E F G H J K L M N P R
CQ NC NC NC NC NC NC DOFF NC NC NC NC NC NC TDO
2
A NC NC NC NC NC NC VREF NC NC DQ6 NC NC NC TCK
3
A NC NC NC DQ4 NC DQ5 VDDQ NC NC NC NC NC DQ7 A
4
R/W A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
5
NC NC A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
6
K K NC VSS VSS VSS VSS VSS VSS VSS VSS VSS A C C
7
NC BWS0 A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
8
LD A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
9
A NC NC NC NC NC NC VDDQ NC NC NC NC NC NC A
10
A NC NC NC NC NC NC VREF DQ1 NC NC NC NC NC TMS
11
CQ DQ3 NC NC DQ2 NC NC ZQ NC NC DQ0 NC NC DQ8 TDI
Note: 1. VSS/144M and VSS/288M are not connected to the die and can be tied to any voltage level.
Document #: 38-05565 Rev. *E
Page 4 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Pin Configurations[1] (continued) 165-ball FBGA (15 x 17 x 1.4 mm) Pinout
CY7C1519V18 (4M x 18)
1 A B C D E F G H J K L M N P R
CQ NC NC NC NC NC NC DOFF NC NC NC NC NC NC TDO
2
A DQ9 NC NC NC DQ12 NC VREF NC NC DQ15 NC NC NC TCK
3
A NC NC DQ10 DQ11 NC DQ13 VDDQ NC DQ14 NC NC DQ16 DQ17 A
4
R/W A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
5
BWS1 NC A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
6
K K A0 VSS VSS VSS VSS VSS VSS VSS VSS VSS A C C
7
NC BWS0 A1 VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
8
LD A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
9
A NC NC NC NC NC NC VDDQ NC NC NC NC NC NC A
10
A NC DQ7 NC NC NC NC VREF DQ4 NC NC DQ1 NC NC TMS
11
CQ DQ8 NC NC DQ6 DQ5 NC ZQ NC DQ3 DQ2 NC NC DQ0 TDI
CY7C1521V18 (2M x 36)
1 A B C D E F G H J K L M N P R
CQ NC NC NC NC NC NC DOFF NC NC NC NC NC NC TDO
2
VSS/144M DQ27 NC DQ29 NC DQ30 DQ31 VREF NC NC DQ33 NC DQ35 NC TCK
3
A DQ18 DQ28 DQ19 DQ20 DQ21 DQ22 VDDQ DQ32 DQ23 DQ24 DQ34 DQ25 DQ26 A
4
R/W A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
5
BWS2 BWS3 A VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
6
K K A0 VSS VSS VSS VSS VSS VSS VSS VSS VSS A C C
7
BWS1 BWS0 A1 VSS VSS VDD VDD VDD VDD VDD VSS VSS A A A
8
LD A VSS VSS VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VDDQ VSS VSS A A
9
A NC NC NC NC NC NC VDDQ NC NC NC NC NC NC A
10
A NC DQ17 NC DQ15 NC NC VREF DQ13 DQ12 NC DQ11 NC DQ9 TMS
11
CQ DQ8 DQ7 DQ16 DQ6 DQ5 DQ14 ZQ DQ4 DQ3 DQ2 DQ1 DQ10 DQ0 TDI
Document #: 38-05565 Rev. *E
Page 5 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Pin Definitions
Pin Name DQ[x:0] I/O Pin Description Input/Output- Data Input/Output signals. Inputs are sampled on the rising edge of K and K clocks during valid Synchronous Write operations. These pins drive out the requested data during a Read operation. Valid data is driven out on the rising edge of both the C and C clocks during Read operations or K and K when in single clock mode. When Read access is deselected, Q[x:0] are automatically tri-stated. CY7C1517V18 - DQ[7:0] CY7C1528V18 - DQ[8:0] CY7C1519V18 - DQ[17:0] CY7C1521V18 - DQ[35:0] InputSynchronous Load. This input is brought LOW when a bus cycle sequence is to be defined. Synchronous This definition includes address and read/write direction. All transactions operate on a burst of 4 data (two clock periods of bus activity). InputNibble Write Select 0, 1 - active LOW (CY7C1517V18 only). Sampled on the rising edge of Synchronous the K and K clocks during Write operations. Used to select which nibble is written into the device during the current portion of the Write operations. Nibbles not written remain unaltered. NWS0 controls D[3:0] and NWS1 controls D[7:4]. All the Nibble Write Selects are sampled on the same edge as the data. Deselecting a Nibble Write Select will cause the corresponding nibble of data to be ignored and not written into the device.
LD
NWS0, NWS1
InputByte Write Select 0, 1, 2, and 3 - active LOW. Sampled on the rising edge of the K and K clocks BWS0, BWS1, BWS2, BWS3 Synchronous during Write operations. Used to select which byte is written into the device during the current portion of the Write operations. Bytes not written remain unaltered. CY7C1528V18 - BWS0 controls D[8:0] CY7C1519V18- BWS0 controls D[8:0] and BWS1 controls D[17:9]. CY7C1521V18- BWS0 controls D[8:0], BWS1 controls D[17:9], BWS2 controls D[26:18] and BWS3 controls D[35:27]. All the Byte Write Selects are sampled on the same edge as the data. Deselecting a Byte Write Select will cause the corresponding byte of data to be ignored and not written into the device. A, A0, A1 InputAddress Inputs. These address inputs are multiplexed for both Read and Write operations. Synchronous Internally, the device is organized as 8M x 8 (four arrays each of 2M x 8) for CY7C1517V18, 8M x 9 (four arrays each of 2M x 9) for CY7C1528V18, a single 4M x 18 array for CY7C1519V18, and a single 2M x 36 array for CY7C1521V18. CY7C1517V18 - Since the least two significant bits of the address internally are "00," only 21 address inputs are needed to access the entire memory array. CY7C1528V18 - Since the least two significant bits of the address internally are "00," only 21 address inputs are needed to access the entire memory array. CY7C1519V18 - A0 and A1 are the inputs to the burst counter. These are incremented in a linear fashion internally. 22 address inputs are needed to access the entire memory array. CY7C1521V18 - A0 and A1 are the inputs to the burst counter. These are incremented in a linear fashion internally. 21 address inputs are needed to access the entire memory array. All the address inputs are ignored when write access is deselected. InputSynchronous Read/Write Input. When LD is LOW, this input designates the access type (Read Synchronous when R/W is HIGH, Write when R/W is LOW) for loaded address. R/W must meet the set-up and hold times around edge of K. InputClock InputClock InputClock InputClock Positive Input Clock for Output Data. C is used in conjunction with C to clock out the Read data from the device. C and C can be used together to deskew the flight times of various devices on the board back to the controller. See application example for further details. Negative Input Clock for Output Data. C is used in conjunction with C to clock out the Read data from the device. C and C can be used together to deskew the flight times of various devices on the board back to the controller. See application example for further details. Positive Input Clock Input. The rising edge of K is used to capture synchronous inputs to the device and to drive out data through Q[x:0] when in single clock mode. All accesses are initiated on the rising edge of K. Negative Input Clock Input. K is used to capture synchronous inputs being presented to the device and to drive out data through Q[x:0] when in single clock mode.
R/W
C
C
K
K
Document #: 38-05565 Rev. *E
Page 6 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Pin Definitions (continued)
Pin Name CQ I/O Pin Description Clock Output CQ is referenced with respect to C. This is a free running clock and is synchronized to the Input clock for output data (C) of the DDR-II. In the single clock mode, CQ is generated with respect to K. The timings for the echo clocks are shown in the AC Timing table. Clock Output CQ is referenced with respect to C. This is a free running clock and is synchronized to the Input clock for output data (C) of the DDR-II. In the single clock mode, CQ is generated with respect to K. The timings for the echo clocks are shown in the AC Timing table. Input Output Impedance Matching Input. This input is used to tune the device outputs to the system data bus impedance. CQ, CQ, and Q[x:0] output impedance are set to 0.2 x RQ, where RQ is a resistor connected between ZQ and ground. Alternately, this pin can be connected directly to VDD, which enables the minimum impedance mode. This pin cannot be connected directly to GND or left unconnected. Input Output Input Input Input N/A Input Input InputReference Ground DLL Turn Off - active LOW. Connecting this pin to ground will turn off the DLL inside the device. The timings in the DLL turned off operation will be different from those listed in this data sheet. TDO for JTAG. TCK pin for JTAG. TDI pin for JTAG. TMS pin for JTAG. Not connected to the die. Can be tied to any voltage level. Address expansion for 144M. Can be tied to any voltage level. Address expansion for 288M. Can be tied to any voltage level. Reference Voltage Input. Static input used to set the reference level for HSTL inputs and Outputs as well as AC measurement points. Ground for the device.
CQ
ZQ
DOFF TDO TCK TDI TMS NC VSS/144M VSS/288M VREF VDD VSS VDDQ
Power Supply Power supply inputs to the core of the device. Power Supply Power supply inputs for the outputs of the device. R/W HIGH and LD LOW at the rising edge of the positive input clock (K). The address presented to the Address inputs is stored in the Read address register and the least two significant bits of the address are presented to the burst counter. The burst counter increments the address in a linear fashion. Following the next K clock rise the corresponding 18-bit word of data from this address location is driven onto the Q[17:0] using C as the output timing reference. On the subsequent rising edge of C the next 18-bit data word from the address location generated by the burst counter is driven onto the Q[17:0]. This process continues until all four 18-bit data words have been driven out onto Q[17:0]. The requested data will be valid 0.45 ns from the rising edge of the output clock (C or C, or K or K when in single clock mode, 300-MHz, 250-MHz and 200-MHz device). In order to maintain the internal logic, each Read access must be allowed to complete. Each Read access consists of four 18-bit data words and takes two clock cycles to complete. Therefore, Read accesses to the device can not be initiated on two consecutive K clock rises. The internal logic of the device will ignore the second Read request. Read accesses can be initiated on every other K clock rise. Doing so will pipeline the data flow such that data is transferred out of the device on every rising edge of the output clocks (C/C or K/K when in single-clock mode). When read access is deselected, the CY7C1519V18 will first complete the pending read transactions. Synchronous internal circuitry will automatically tri-state the outputs following the next rising edge of the positive output clock (C). This will allow Page 7 of 28
Functional Overview
The CY7C1517V18, CY7C1528V18, CY7C1519V18, and CY7C1521V18 are synchronous pipelined Burst SRAMs equipped with a DDR interface. Accesses are initiated on the rising edge of the positive input clock (K). All synchronous input timing is referenced from the rising edge of the input clocks (K and K) and all output timing is referenced to the rising edge of the output clocks (C/C or K/K when in single-clock mode). All synchronous data inputs (D[x:0]) pass through input registers controlled by the rising edge of the input clocks (K and K). All synchronous data outputs (Q[x:0]) pass through output registers controlled by the rising edge of the output clocks (C/C or K/K when in single clock mode). All synchronous control (R/W, LD, BWS[0:X]) inputs pass through input registers controlled by the rising edge of the input clock (K). CY7C1519V18 is described in the following sections. The same basic descriptions apply to CY7C1517V18, CY7C1528V18 and CY7C1521V18. Read Operations The CY7C1519V18 is organized internally as a 4M x 18 SRAM. Accesses are completed in a burst of four sequential 18-bit data words. Read operations are initiated by asserting
Document #: 38-05565 Rev. *E
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
for a seamless transition between devices without the insertion of wait states in a depth expanded memory. Write Operations Write operations are initiated by asserting R/W LOW and LD LOW at the rising edge of the positive input clock (K). The address presented to Address inputs are stored in the Write address register and the least two significant bits of the address are presented to the burst counter. The burst counter increments the address in a linear fashion. On the following K clock rise the data presented to D[17:0] is latched and stored into the 18-bit Write Data register provided BWS[1:0] are both asserted active. On the subsequent rising edge of the Negative Input Clock (K) the information presented to D[17:0] is also stored into the Write Data register provided BWS[1:0] are both asserted active. This process continues for one more cycle until four 18-bit words (a total of 72 bits) of data are stored in the SRAM. The 72 bits of data are then written into the memory array at the specified location. Therefore, Write accesses to the device can not be initiated on two consecutive K clock rises. The internal logic of the device will ignore the second Write request. Write accesses can be initiated on every other rising edge of the positive input clock (K). Doing so will pipeline the data flow such that 18 bits of data can be transferred into the device on every rising edge of the input clocks (K and K). When write access is deselected, the device will ignore all inputs after the pending Write operations have been completed. Byte Write Operations Byte Write operations are supported by the CY7C1519V18. A Write operation is initiated as described in the Write Operation section above. The bytes that are written are determined by BWS0 and BWS1, which are sampled with each set of 18-bit data words. Asserting the appropriate Byte Write Select input during the data portion of a write will allow the data being presented to be latched and written into the device. Deasserting the Byte Write Select input during the data portion of a write will allow the data stored in the device for that byte to remain unaltered. This feature can be used to simplify Read/Modify/Write operations to a Byte Write operation. Single Clock Mode The CY7C1519V18 can be used with a single clock that controls both the input and output registers. In this mode the device will recognize only a single pair of input clocks (K and K) that control both the input and output registers. This operation is identical to the operation if the device had zero skew between the K/K and C/C clocks. All timing parameters remain the same in this mode. To use this mode of operation, the user must tie C and C HIGH at power-on. This function is a strap option and not alterable during device operation. DDR Operation The CY7C1519V18 enables high-performance operation through high clock frequencies (achieved through pipelining) and double data rate mode of operation. The CY7C1519V18 requires a No Operation (NOP) cycle when transitioning from a Read to a Write cycle. At higher frequencies, some applications may require a second NOP cycle to prevent contention. If a Read occurs after a Write cycle, address and data for the Write are stored in registers. The write information must be stored because the SRAM can not perform the last word Write to the array without conflicting with the Read. The data stays in this register until the next Write cycle occurs. On the first Write cycle after the Read(s), the stored data from the earlier Write will be written into the SRAM array. This is called a Posted Write. Depth Expansion Depth expansion requires replicating the LD control signal for each bank. All other control signals can be common between banks as appropriate. Programmable Impedance An external resistor, RQ must be connected between the ZQ pin on the SRAM and VSS to allow the SRAM to adjust its output driver impedance. The value of RQ must be 5x the value of the intended line impedance driven by the SRAM, The allowable range of RQ to guarantee impedance matching with a tolerance of 15% is between 175 and 350, with VDDQ = 1.5V. The output impedance is adjusted every 1024 cycles upon power-up to account for drifts in supply voltage and temperature. Echo Clocks Echo clocks are provided on the DDR-II to simplify data capture on high-speed systems. Two echo clocks are generated by the DDR-II. CQ is referenced with respect to C and CQ is referenced with respect to C. These are free running clocks and are synchronized to the output clock of the DDR-II. In the single clock mode, CQ is generated with respect to K and CQ is generated with respect to K. The timings for the echo clocks are shown in the AC Timing table. DLL These chips utilize a Delay Lock Loop (DLL) that is designed to function between 80 MHz and the specified maximum clock frequency. During power-up, when the DOFF is tied HIGH, the DLL gets locked after 1024 cycles of stable clock. The DLL can also be reset by slowing or stopping the input clock K and K for a minimum of 30 ns. However, it is not necessary for the DLL to be specifically reset in order to lock the DLL to the desired frequency. The DLL will automatically lock 1024 clock cycles after a stable clock is presented.the DLL may be disabled by applying ground to the DOFF pin. For information refer to the application note "DLL Considerations in QDRIITM/DDRII/QDRII+/DDRII+".
Document #: 38-05565 Rev. *E
Page 8 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Application Example[2]
ZQ CQ/CQ# LD# R/W# C C# K K#
DQ A
SRAM#1
R = 250ohms
DQ A
ZQ CQ/CQ# LD# R/W# C C# K K#
SRAM#2
R = 250ohms
DQ Addresses Cycle Start# R/W# Return CLK Source CLK Return CLK# Source CLK# Echo Clock1/Echo Clock#1 Echo Clock2/Echo Clock#2
BUS MASTER (CPU or ASIC)
Vterm = 0.75V R = 50ohms Vterm = 0.75V
Truth Table[3, 4, 5, 6, 7, 8]
Operation L-H Write Cycle: Load address; wait one cycle; input write data on four consecutive K and K rising edges. Read Cycle: L-H Load address; wait one and a half cycle; read data on four consecutive C and C rising edges. NOP: No Operation Standby: Clock Stopped L-H K LD L R/W L DQ DQ DQ DQ D(A1) at K(t + 1) D(A2) at K(t + 1) D(A3) at K(t + 2) D(A4) at K(t + 2)
L
H
Q(A1) at C(t + 1) Q(A2) at C(t + 2) Q(A3) at C(t + 2) Q(A4) at C(t + 3)
H
X X
High-Z Previous State
High-Z Previous State
High-Z Previous State
High-Z Previous State
Stopped X
Linear Burst Address Table (CY7C1519V18 and CY7C1521V18)
First Address (External) X..X00 X..X01 X..X10 X..X11 Second Address (Internal) X..X01 X..X10 X..X11 X..X00 Third Address (Internal) X..X10 X..X11 X..X00 X..X01 Fourth Address (Internal) X..X11 X..X00 X..X01 X..X10
Notes: 2. The above application shows 2 DDR-II being used. 3. X = "Don't Care," H = Logic HIGH, L = Logic LOW, represents rising edge. 4. Device will power-up deselected and the outputs in a tri-state condition. 5. On CY7C1519V18 and CY7C1521V18, "A1" represents address location latched by the devices when transaction was initiated and A2, A3, A4 represents the addresses sequence in the burst. On CY7C1517V18, "A1" represents A + `00', A2 represents A + `01', "A3" represents A + `10' and "A4" represents A + `11'. 6. "t" represents the cycle at which a Read/Write operation is started. t+1, t + 2 and t +3 are the first, second and third clock cycles succeeding the "t" clock cycle. 7. Data inputs are registered at K and K rising edges. Data outputs are delivered on C and C rising edges, except when in single clock mode. 8. It is recommended that K = K and C = C = HIGH when clock is stopped. This is not essential, but permits most rapid restart by overcoming transmission line charging symmetrically. 9. Assumes a Write cycle was initiated per the Write Cycle Description Truth Table. NWS0, NWS1,BWS0, BWS1,BWS2, BWS3 can be altered on different portions of a write cycle, as long as the set-up and hold requirements are achieved.
Document #: 38-05565 Rev. *E
Page 9 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Write Cycle Descriptions(CY7C1517V18 and CY7C1528V18)[3, 9]
BWS0,NWS0 BWS1,NWS1 L L K L-H K - Comments During the Data portion of a Write sequence : CY7C1517V18 - both nibbles (D[7:0]) are written into the device, CY7C1528V18 - both bytes (D[17:0]) are written into the device.
L
L
-
L-H During the Data portion of a Write sequence : CY7C1517V18 - both nibbles (D[7:0]) are written into the device, CY7C1528V18 - both bytes (D[17:0]) are written into the device. - During the Data portion of a Write sequence : CY7C1517V18 - only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain unaltered, CY7C1528V18 - only the lower byte (D[8:0]) is written into the device. D[17:9] will remain unaltered.
L
H
L-H
L
H
-
L-H During the Data portion of a Write sequence : CY7C1517V18 - only the lower nibble (D[3:0]) is written into the device. D[7:4] will remain unaltered, CY7C1528V18 - only the lower byte (D[8:0]) is written into the device. D[17:9] will remain unaltered. - During the Data portion of a Write sequence : CY7C1517V18 - only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain unaltered, CY7C1528V18 - only the upper byte (D[17:9]) is written into the device. D[8:0] will remain unaltered.
H
L
L-H
H
L
-
L-H During the Data portion of a Write sequence : CY7C1517V18 - only the upper nibble (D[7:4]) is written into the device. D[3:0] will remain unaltered, CY7C1528V18 - only the upper byte (D[17:9]) is written into the device. D[8:0] will remain unaltered. - No data is written into the devices during this portion of a Write operation. L-H No data is written into the devices during this portion of a Write operation.
H H
H H
L-H -
Document #: 38-05565 Rev. *E
Page 10 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Write Cycle Descriptions (CY7C1519V18)[3, 9]
BWS0 BWS1 BWS2 BWS3 L L L L H H H H H H H H L L H H L L H H H H H H L L H H H H L L H H H H L L H H H H H H L L H H K L-H - L-H - L-H - L-H - L-H - L-H - L-H - L-H - L-H - L-H - L-H - L-H K Comments During the Data portion of a Write sequence, all four bytes (D[35:0]) are written into the device. During the Data portion of a Write sequence, all four bytes (D[35:0]) are written into the device. During the Data portion of a Write sequence, only the lower byte (D[8:0]) is written into the device. D[35:9] will remain unaltered. During the Data portion of a Write sequence, only the lower byte (D[8:0]) is written into the device. D[35:9] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[17:9]) is written into the device. D[8:0] and D[35:18] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[17:9]) is written into the device. D[8:0] and D[35:18] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[26:18]) is written into the device. D[17:0] and D[35:27] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[26:18]) is written into the device. D[17:0] and D[35:27] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[35:27]) is written into the device. D[26:0] will remain unaltered. During the Data portion of a Write sequence, only the byte (D[35:27]) is written into the device. D[26:0] will remain unaltered. No data is written into the device during this portion of a Write operation. No data is written into the device during this portion of a Write operation.
Write Cycle Descriptions (CY7C1521V18)[3, 9]
BWS0 L L H H K L-H - L-H - K - L-H - L-H Comments During the Data portion of a Write sequence, the single byte (D[8:0]) is written into the device. During the Data portion of a Write sequence, the single byte (D[8:0]) is written into the device. No data is written into the device during this portion of a Write operation. No data is written into the device during this portion of a Write operation.
Document #: 38-05565 Rev. *E
Page 11 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
IEEE 1149.1 Serial Boundary Scan (JTAG)
These SRAMs incorporate a serial boundary scan test access port (TAP) in the FBGA package. This part is fully compliant with IEEE Standard #1149.1-1900. The TAP operates using JEDEC standard 1.8V I/O logic levels. Disabling the JTAG Feature It is possible to operate the SRAM without using the JTAG feature. To disable the TAP controller, TCK must be tied LOW (VSS) to prevent clocking of the device. TDI and TMS are internally pulled up and may be unconnected. They may alternately be connected to VDD through a pull-up resistor. TDO should be left unconnected. Upon power-up, the device will come up in a reset state which will not interfere with the operation of the device. Test Access Port--Test Clock The test clock is used only with the TAP controller. All inputs are captured on the rising edge of TCK. All outputs are driven from the falling edge of TCK. Test Mode Select The TMS input is used to give commands to the TAP controller and is sampled on the rising edge of TCK. It is allowable to leave this pin unconnected if the TAP is not used. The pin is pulled up internally, resulting in a logic HIGH level. Test Data-In (TDI) The TDI pin is used to serially input information into the registers and can be connected to the input of any of the registers. The register between TDI and TDO is chosen by the instruction that is loaded into the TAP instruction register. For information on loading the instruction register, see the TAP Controller State Diagram. TDI is internally pulled up and can be unconnected if the TAP is unused in an application. TDI is connected to the most significant bit (MSB) on any register. Test Data-Out (TDO) The TDO output pin is used to serially clock data-out from the registers. The output is active depending upon the current state of the TAP state machine (see Instruction codes). The output changes on the falling edge of TCK. TDO is connected to the least significant bit (LSB) of any register. Performing a TAP Reset A Reset is performed by forcing TMS HIGH (VDD) for five rising edges of TCK. This RESET does not affect the operation of the SRAM and may be performed while the SRAM is operating. At power-up, the TAP is reset internally to ensure that TDO comes up in a high-Z state. TAP Registers Registers are connected between the TDI and TDO pins and allow data to be scanned into and out of the SRAM test circuitry. Only one register can be selected at a time through the instruction registers. Data is serially loaded into the TDI pin on the rising edge of TCK. Data is output on the TDO pin on the falling edge of TCK. Instruction Register Three-bit instructions can be serially loaded into the instruction register. This register is loaded when it is placed between the Document #: 38-05565 Rev. *E TDI and TDO pins as shown in TAP Controller Block Diagram. Upon power-up, the instruction register is loaded with the IDCODE instruction. It is also loaded with the IDCODE instruction if the controller is placed in a reset state as described in the previous section. When the TAP controller is in the Capture IR state, the two least significant bits are loaded with a binary "01" pattern to allow for fault isolation of the board level serial test path. Bypass Register To save time when serially shifting data through registers, it is sometimes advantageous to skip certain chips. The bypass register is a single-bit register that can be placed between TDI and TDO pins. This allows data to be shifted through the SRAM with minimal delay. The bypass register is set LOW (VSS) when the BYPASS instruction is executed. Boundary Scan Register The boundary scan register is connected to all of the input and output pins on the SRAM. Several no connect (NC) pins are also included in the scan register to reserve pins for higher density devices. The boundary scan register is loaded with the contents of the RAM Input and Output ring when the TAP controller is in the Capture-DR state and is then placed between the TDI and TDO pins when the controller is moved to the Shift-DR state. The EXTEST, SAMPLE/PRELOAD and SAMPLE Z instructions can be used to capture the contents of the Input and Output ring. The Boundary Scan Order tables show the order in which the bits are connected. Each bit corresponds to one of the bumps on the SRAM package. The MSB of the register is connected to TDI, and the LSB is connected to TDO. Identification (ID) Register The ID register is loaded with a vendor-specific, 32-bit code during the Capture-DR state when the IDCODE command is loaded in the instruction register. The IDCODE is hardwired into the SRAM and can be shifted out when the TAP controller is in the Shift-DR state. The ID register has a vendor code and other information described in the Identification Register Definitions table. TAP Instruction Set Eight different instructions are possible with the three-bit instruction register. All combinations are listed in the Instruction Code table. Three of these instructions are listed as RESERVED and should not be used. The other five instructions are described in detail below. Instructions are loaded into the TAP controller during the Shift-IR state when the instruction register is placed between TDI and TDO. During this state, instructions are shifted through the instruction register through the TDI and TDO pins. To execute the instruction once it is shifted in, the TAP controller needs to be moved into the Update-IR state. IDCODE The IDCODE instruction causes a vendor-specific, 32-bit code to be loaded into the instruction register. It also places the instruction register between the TDI and TDO pins and allows the IDCODE to be shifted out of the device when the TAP controller enters the Shift-DR state. The IDCODE instruction Page 12 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
is loaded into the instruction register upon power-up or whenever the TAP controller is given a test logic reset state. SAMPLE Z The SAMPLE Z instruction causes the boundary scan register to be connected between the TDI and TDO pins when the TAP controller is in a Shift-DR state. The SAMPLE Z command puts the output bus into a High-Z state until the next command is given during the "Update IR" state. SAMPLE/PRELOAD SAMPLE/PRELOAD is a 1149.1 mandatory instruction. When the SAMPLE/PRELOAD instructions are loaded into the instruction register and the TAP controller is in the Capture-DR state, a snapshot of data on the inputs and output pins is captured in the boundary scan register. The user must be aware that the TAP controller clock can only operate at a frequency up to 20 MHz, while the SRAM clock operates more than an order of magnitude faster. Because there is a large difference in the clock frequencies, it is possible that during the Capture-DR state, an input or output will undergo a transition. The TAP may then try to capture a signal while in transition (metastable state). This will not harm the device, but there is no guarantee as to the value that will be captured. Repeatable results may not be possible. To guarantee that the boundary scan register will capture the correct value of a signal, the SRAM signal must be stabilized long enough to meet the TAP controller's capture set-up plus hold times (tCS and tCH). The SRAM clock input might not be captured correctly if there is no way in a design to stop (or slow) the clock during a SAMPLE/PRELOAD instruction. If this is an issue, it is still possible to capture all other signals and simply ignore the value of the CK and CK captured in the boundary scan register. Once the data is captured, it is possible to shift out the data by putting the TAP into the Shift-DR state. This places the boundary scan register between the TDI and TDO pins. PRELOAD allows an initial data pattern to be placed at the latched parallel outputs of the boundary scan register cells prior to the selection of another boundary scan test operation. The shifting of data for the SAMPLE and PRELOAD phases can occur concurrently when required--that is, while data captured is shifted out, the preloaded data can be shifted in. BYPASS When the BYPASS instruction is loaded in the instruction register and the TAP is placed in a Shift-DR state, the bypass register is placed between the TDI and TDO pins. The advantage of the BYPASS instruction is that it shortens the boundary scan path when multiple devices are connected together on a board. EXTEST The EXTEST instruction enables the preloaded data to be driven out through the system output pins. This instruction also selects the boundary scan register to be connected for serial access between the TDI and TDO in the shift-DR controller state. EXTEST Output Bus Tri-State IEEE Standard 1149.1 mandates that the TAP controller be able to put the output bus into a tri-state mode. The boundary scan register has a special bit located at bit #108. When this scan cell, called the "extest output bus tri-state", is latched into the preload register during the "Update-DR" state in the TAP controller, it will directly control the state of the output (Q-bus) pins, when the EXTEST is entered as the current instruction. When HIGH, it will enable the output buffers to drive the output bus. When LOW, this bit will place the output bus into a High-Z condition. This bit can be set by entering the SAMPLE/PRELOAD or EXTEST command, and then shifting the desired bit into that cell, during the "Shift-DR" state. During "Update-DR", the value loaded into that shift-register cell will latch into the preload register. When the EXTEST instruction is entered, this bit will directly control the output Q-bus pins. Note that this bit is pre-set HIGH to enable the output when the device is powered-up, and also when the TAP controller is in the "Test-Logic-Reset" state. Reserved These instructions are not implemented but are reserved for future use. Do not use these instructions.
Document #: 38-05565 Rev. *E
Page 13 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
TAP Controller State Diagram[10] 1 TEST-LOGIC RESET 0 0 TEST-LOGIC/ IDLE 1 SELECT DR-SCAN 0 1 CAPTURE-DR 0 SHIFT-DR 1 EXIT1-DR 0 PAUSE-DR 1 0 EXIT2-DR 1 UPDATE-DR 1 0 0 EXIT2-IR 1 UPDATE-IR 1 0 0 1 0 1 CAPTURE-IR 0 SHIFT-IR 1 EXIT1-IR 0 PAUSE-IR 1 0 1 0 1 1 SELECT IR-SCAN 0
Note: 10. The 0/1 next to each state represents the value at TMS at the rising edge of TCK.
Document #: 38-05565 Rev. *E
Page 14 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
TAP Controller Block Diagram
0 Bypass Register Selection Circuitry TDI 2 Instruction Register 31 30 29 . . 2 1 0 1 0 Selection Circuitry TDO
Identification Register 108 . . . . 2 1 0
Boundary Scan Register
TCK TMS
TAP Controller
TAP Electrical Characteristics Over the Operating Range[16, 18, 11]
Parameter VOH1 VOH2 VOL1 VOL2 VIH VIL IX Description Output HIGH Voltage Output HIGH Voltage Output LOW Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input and OutputLoad Current GND VI VDD Test Conditions IOH = -2.0 mA IOH = -100 A IOL = 2.0 mA IOL = 100 A 0.65VDD -0.3 -5 Min. 1.4 1.6 0.4 0.2 VDD + 0.3 0.35VDD 5 Max. Unit V V V V V V A
TAP AC Switching Characteristics Over the Operating Range[12, 13]
Parameter tTCYC tTF tTH tTL Set-up Times tTMSS tTDIS tCS TMS Set-up to TCK Clock Rise TDI Set-up to TCK Clock Rise Capture Set-up to TCK Rise 5 5 5 ns ns ns TCK Clock Cycle Time TCK Clock Frequency TCK Clock HIGH TCK Clock LOW 20 20 Description Min. 50 20 Max. Unit ns MHz ns ns
Notes: 11. These characteristics pertain to the TAP inputs (TMS, TCK, TDI and TDO). Parallel load levels are specified in the Electrical Characteristics table. 12. tCS and tCH refer to the set-up and hold time requirements of latching data from the boundary scan register. 13. Test conditions are specified using the load in TAP AC test conditions. tR/tF = 1 ns.
Document #: 38-05565 Rev. *E
Page 15 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
TAP AC Switching Characteristics Over the Operating Range[12, 13] (continued)
Parameter Hold Times tTMSH tTDIH tCH Output Times tTDOV tTDOX TCK Clock LOW to TDO Valid TCK Clock LOW to TDO Invalid 0 10 ns ns TMS Hold after TCK Clock Rise TDI Hold after Clock Rise Capture Hold after Clock Rise 5 5 5 ns ns ns Description Min. Max. Unit
TAP Timing and Test Conditions[13]
0.9V 50 TDO Z0 = 50 CL = 20 pF 0V ALL INPUT PULSES 1.8V 0.9V
(a)
GND
tTH
tTL
Test Clock TCK
tTMSS tTMSH
tTCYC
Test Mode Select TMS
tTDIS tTDIH
Test Data-In TDI
Test Data-Out TDO
tTDOV tTDOX
Document #: 38-05565 Rev. *E
Page 16 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Identification Register Definitions
Value Instruction Field Revision Number (31:29) CY7C1517V18 000 CY7C1528V18 000 CY7C1519V18 000 11010100011010100 00000110100 CY7C1521V18 000 Description Version number.
Cypress Device ID 11010100011000100 11010100011001100 (28:12) Cypress JEDEC ID (11:1) ID Register Presence (0) 00000110100 00000110100
11010100011100100 Defines the type of SRAM. 00000110100 Allows unique identification of SRAM vendor. Indicate the presence of an ID register.
1
1
1
1
Scan Register Sizes
Register Name Instruction Bypass ID Boundary Scan Bit Size 3 1 32 109
Instruction Codes
Instruction EXTEST IDCODE SAMPLE Z RESERVED SAMPLE/PRELOAD RESERVED RESERVED BYPASS Code 000 001 010 011 100 101 110 111 Description Captures the Input/Output ring contents. Loads the ID register with the vendor ID code and places the register between TDI and TDO. This operation does not affect SRAM operation. Captures the Input/Output contents. Places the boundary scan register between TDI and TDO. Forces all SRAM output drivers to a High-Z state. Do Not Use: This instruction is reserved for future use. Captures the Input/Output ring contents. Places the boundary scan register between TDI and TDO. Does not affect the SRAM operation. Do Not Use: This instruction is reserved for future use. Do Not Use: This instruction is reserved for future use. Places the bypass register between TDI and TDO. This operation does not affect SRAM operation.
Document #: 38-05565 Rev. *E
Page 17 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Boundary Scan Order
Bit # 0 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 Bump ID 6R 6P 6N 7P 7N 7R 8R 8P 9R 11P 10P 10N 9P 10M 11N 9M 9N 11L 11M 9L 10L 11K 10K 9J 9K 10J 11J 11H Bit # 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 Bump ID 10G 9G 11F 11G 9F 10F 11E 10E 10D 9E 10C 11D 9C 9D 11B 11C 9B 10B 11A 10A 9A 8B 7C 6C 8A 7A 7B 6B Bit # 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 Bump ID 6A 5B 5A 4A 5C 4B 3A 2A 1A 2B 3B 1C 1B 3D 3C 1D 2C 3E 2D 2E 1E 2F 3F 1G 1F 3G 2G 1H Bit # 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 Bump ID 1J 2J 3K 3J 2K 1K 2L 3L 1M 1L 3N 3M 1N 2M 3P 2N 2P 1P 3R 4R 4P 5P 5N 5R Internal
Document #: 38-05565 Rev. *E
Page 18 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Power-Up Sequence in DDR-II SRAM[14, 15]
DDR-II SRAMs must be powered up and initialized in a predefined manner to prevent undefined operations. Power-Up Sequence * Apply power and drive DOFF LOW (All other inputs can be HIGH or LOW) -- Apply VDD before VDDQ -- Apply VDDQ before VREF or at the same time as VREF * After the power and clock (K, K, C, C) are stable take DOFF HIGH * The additional 1024 cycles of clocks are required for the DLL to lock. DLL Constraints * DLL uses either K or C clock as its synchronizing input.The input should have low phase jitter, which is specified as tKC Var. * The DLL will function at frequencies down to 80 MHz. * If the input clock is unstable and the DLL is enabled, then the DLL may lock to an incorrect frequency, causing unstable SRAM behavior.
Power-up Waveforms
K K
~ ~
Unstable Clock
> 1024 Stable clock
~ ~
Start Normal Operation
Clock Start (Clock Starts after V DD / V DDQ Stable)
VDD / VDDQ
DOFF
V DD / V DDQ Stable (< +/- 0.1V DC per 50ns ) Fix High (or tied to VDDQ)
Notes: 14. It is recommended that the DOFF pin be pulled HIGH via a pull up resistor of 1 Kohm. 15. During Power-Up, when the DOFF is tied HIGH, the DLL gets locked after 1024 cycles of stable clock.
Document #: 38-05565 Rev. *E
Page 19 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Maximum Ratings
(Above which the useful life may be impaired.) Storage Temperature ................................. -65C to +150C Ambient Temperature with Power Applied .. -55C to +125C Supply Voltage on VDD Relative to GND........ -0.5V to +2.9V Supply Voltage on VDDQ Relative to GND ...... -0.5V to +VDD DC Applied to Outputs in High-Z......... -0.5V to VDDQ + 0.3V DC Input Voltage[16] ...............................-0.5V to VDD + 0.3V Electrical Characteristics Over the Operating Range[18] DC Electrical Characteristics Over the Operating Range Parameter VDD VDDQ VOH VOL VOH(LOW) VOL(LOW) VIH VIL IX IOZ VREF IDD Description Power Supply Voltage I/O Supply Voltage Output HIGH Voltage Output LOW Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Voltage[16] Input LOW Voltage[16] Input Leakage Current Output Leakage Current Input Reference Voltage[21] VDD Operating Supply GND VI VDDQ GND VI VDDQ, Output Disabled Typical Value = 0.75V VDD = Max., IOUT = 0 mA, f = fMAX = 1/tCYC 167 MHz 200 MHz 250 MHz 278 MHz 300 MHz ISB1 Automatic Power-down Current Max. VDD, both ports Deselected, VIN VIH or VIN VIL, f = fMAX = 1/tCYC, Inputs Static 167 MHz 200 MHz 250 MHz 278 MHz 300 MHz AC Input Requirements Over the Operating Range Parameter VIH VIL Description Input High (Logic 1) Voltage Input Low (Logic 0) Voltage Test Conditions Min. VREF + 0.2 - Typ. - - Max. - VREF - 0.2 Unit V V Note 19 Note 20 IOH = -0.1 mA, Nominal Impedance IOL = 0.1 mA, Nominal Impedance Test Conditions Min. 1.7 1.4 VDDQ/2 - 0.12 VDDQ/2 - 0.12 VDDQ - 0.2 VSS VREF + 0.1 -0.3 -5 -5 0.68 0.75 Typ. 1.8 1.5 Max. 1.9 VDD VDDQ/2 + 0.12 VDDQ/2 + 0.12 VDDQ 0.2 VDDQ + 0.3 VREF - 0.1 5 5 0.95 700 750 850 900 950 340 360 380 390 400 Unit V V V V V V V V A A V mA mA mA mA mA mA mA mA mA mA Current into Outputs (LOW)......................................... 20 mA Static Discharge Voltage (MIL-STD-883, M 3015)... > 2001V Latch-up Current.................................................... > 200 mA
Operating Range
Range Com'l Ind'l Ambient Temperature 0C to +70C -40C to +85C VDD[17] 1.8 0.1V VDDQ[17] 1.4V to VDD
Notes: 16. Overshoot: VIH(AC) < VDD+0.85V (Pulse width less than tTCYC/2); Undershoot VIL(AC) > -1.5V (Pulse width less than tTCYC/2). 17. Power-up: Assumes a linear ramp from 0V to VDD(Min.) within 200 ms. During this time VIH < VDD and VDDQ < VDD. 18. All voltage referenced to ground. 19. Outputs are impedance controlled. IOH = -(VDDQ/2)/(RQ/5) for values of 175 < RQ < 350. 20. Outputs are impedance controlled. IOL = (VDDQ/2)/(RQ/5) for values of 175 < RQ < 350. 21. VREF (Min.) = 0.68V or 0.46VDDQ, whichever is larger, VREF (Max.) = 0.95V or 0.54VDDQ, whichever is smaller.
Document #: 38-05565 Rev. *E
Page 20 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Capacitance[22]
Parameter CIN CCLK CO Description Input Capacitance Clock Input Capacitance Output Capacitance Test Conditions TA = 25C, f = 1 MHz, VDD = 1.8V, VDDQ = 1.5V Max. 5.5 8.5 8 Unit pF pF pF
Thermal Resistance[22]
Parameter JA JC Description Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA/JESD51. 165 FBGA Package 16.2 2.3 Unit C/W C/W
AC Test Loads and Waveforms
VREF = 0.75V VREF OUTPUT Device Under Test Z0 = 50 RL = 50 VREF = 0.75V 0.75V VREF OUTPUT Device Under Test ZQ 5 pF 0.25V Slew Rate = 2 V/ns 0.75V R = 50 ALL INPUT PULSES 1.25V 0.75V
[23]
ZQ
RQ = 250
(a)
RQ = 250 (b)
Notes: 22. Tested initially and after any design or process change that may affect these parameters. 23. Unless otherwise noted, test conditions assume signal transition time of 2V/ns, timing reference levels of 0.75V, VREF = 0.75V, RQ = 250, VDDQ = 1.5V, input pulse levels of 0.25V to 1.25V, and output loading of the specified IOL/IOH and load capacitance shown in (a) of AC Test Loads.
Document #: 38-05565 Rev. *E
Page 21 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Switching Characteristics Over the Operating Range [23, 24]
Cypress Consortium Parameter Parameter tPOWER tCYC tKH tKL tKHKH tKHKH tKHKL tKLKH tKHKH 300 MHz Description VDD(Typical) to the first Access[25] K Clock and C Clock Cycle Time Input Clock (K/K and C/C) HIGH Input Clock (K/K and C/C) LOW 1 278 MHz 1 250 MHz 1 4.0 1.6 1.6 - 1.8 6.3 - - - 200 MHz 1 5.0 2.0 2.0 2.2 7.9 - - - 167 MHz 1 6.0 2.4 2.4 2.7 8.4 - - - ms ns ns ns ns Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit
3.30 5.25 3.60 5.25 1.32 1.32 - - 1.4 1.4 1.6 -
K Clock Rise to K Clock Rise 1.49 and C to C Rise (rising edge to rising edge) K/K Clock Rise to C/C Clock Rise (rising edge to rising edge) Address Set-up to K Clock Rise Control Set-up to Clock (K, K) Rise (LD, R/W) Double Data Rate Control Set-up to Clock (K, K) Rise (BWS0, BWS1, BWS2, BWS3) D[X:0] Set-up to Clock (K and K) Rise Address Hold after K Clock Rise Control Hold after Clock (K and K) Rise (LD, R/W) 0.0
tKHCH
tKHCH
1.45
0.0
1.55
0.0
1.8
0.0
2.2
0.0
2.7
ns
Set-up Times tSA tSC tSCDDR tAVKH tIVKH tIVKH 0.4 0.4 0.3 - - - 0.4 0.4 0.3 - - - 0.5 0.5 0.35 - - - 0.6 0.6 0.4 - - - 0.7 0.7 0.5 - - - ns ns ns
tSD[26]
tDVKH
0.3
-
0.3
-
0.35
-
0.4
-
0.5
-
ns
Hold Times tHA tHC tHCDDR tKHAX tKHIX tKHIX 0.4 0.4 - - - 0.4 0.4 0.30 - - - 0.5 0.5 0.35 - - - 0.6 0.6 0.4 - - - 0.7 0.7 0.5 - - - ns ns ns
Double Data Rate Control 0.30 Hold after Clock (K and K) Rise (BWS0, BWS1, BWS2, BWS3) D[X:0] Hold after Clock (K and K) Rise 0.30
tHD
tKHDX
-
0.30
-
0.35
-
0.4
-
0.5
-
ns
Notes: 24. All devices can operate at clock frequencies as low as 119 MHz. When a part with a maximum frequency above 133 MHz is operating at a lower clock frequency, it requires the input timings of the frequency range in which it is being operated and will output data with the output timings of that frequency range. 25. This part has a voltage regulator internally; tPOWER is the time that the power needs to be supplied above VDD minimum initially before a read or write operation can be initiated. 26. For DQ0 data signal on CY7C1528V18 device, tSD is 0.5 ns for 200 MHz, 250 MHz, 278 MHz and 300 MHz frequencies.
Document #: 38-05565 Rev. *E
Page 22 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Switching Characteristics Over the Operating Range (continued)[23, 24]
Cypress Consortium Parameter Parameter Output Times tCO tCHQV C/C Clock Rise (or K/K in single clock mode) to Data Valid Data Output Hold after Output C/C Clock Rise (Active to Active) C/C Clock Rise to Echo Clock Valid Echo Clock Hold after C/C Clock Rise Echo Clock High to Data Valid Echo Clock High to Data Invalid Clock (C and C) Rise to High-Z (Active to High-Z)[27, 28] Clock (C and C) Rise to Low-Z[27, 28] Clock Phase Jitter DLL Lock Time (K, C) K Static to DLL Reset - 0.45 - 0.45 - 0.45 - 0.45 - 0.50 ns 300 MHz Description 278 MHz 250 MHz 200 MHz 167 MHz Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Unit
tDOH
tCHQX
-0.45
-
-0.45
-
-0.45
-
-0.45
-
-0.50
-
ns
tCCQO tCQOH
tCHCQV tCHCQX
- -0.45
0.45 -
- -0.45
0.45 -
- -0.45
0.45 -
- -0.45
0.45 -
- -0.50
0.50 -
ns ns
tCQD tCQDOH tCHZ
tCQHQV tCQHQX tCHQZ
- -0.27 -
0.27 - 0.45
- -0.27 -
0.27 - 0.45
- -0.30 -
0.30 - 0.45
- -0.35 -
0.35 - 0.45
- -0.40 -
0.40 - 0.50
ns ns ns
tCLZ
tCHQX1
-0.45
-
-0.45
-
-0.45
-
-0.45
-
-0.50
-
ns
DLL Timing tKC Var tKC lock tKC Reset tKC Var tKC lock tKC Reset - 1024 30 0.20 - - 1024 30 0.20 - - 1024 30 0.20 - - 1024 30 0.20 - - 1024 30 0.20 - ns Cycles ns
Notes: 27. tCHZ, tCLZ, are specified with a load capacitance of 5 pF as in (b) of AC Test Loads. Transition is measured 100 mV from steady-state voltage. 28. At any given voltage and temperature tCHZ is less than tCLZ and tCHZ less than tCO.
Document #: 38-05565 Rev. *E
Page 23 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Switching Waveforms[29, 30, 31]
NOP 1 K
t KH t KL t CYC t KHKH
READ (burst of 4) 3 2
READ (burst of 4) 5 4
NOP 6
NOP 7
WRITE (burst of 4) 9 8
WRITE (burst of 4) 11 10
READ (burst of 4) 13 12
K LD
t SC t HC tCO
R/W A
A0 t SA t HA A1 A2 t HD t SD A3 t HD t SD
A4
DQ
Q00
Q01
Q02
Q03
Q10
Q11
Q12
Q13
D20 D21 D22 D23 D30 D31 D32 D33
tKHCH t CLZ
tDOH
tCQD tCO tCQDOH t CHZ
C
tKHCH tKH tKL t CYC t KHKH
C
tCQOH tCCQO
CQ
tCQOH tCCQO
CQ DON'T CARE UNDEFINED
Notes: 29. Q00 refers to output from address A0. Q01 refers to output from the next internal burst address following A0, i.e., A0+1. 30. Output are disabled (High-Z) one clock cycle after a NOP. 31. In this example, if address A2 = A1, then data Q20 = D10 and Q21 = D11. Write data is forwarded immediately as read results. This note applies to the whole diagram.
Document #: 38-05565 Rev. *E
Page 24 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Ordering Information
Not all of the speed, package and temperature ranges are available. Please contact your local sales representative or visit www.cypress.com for actual products offered. Speed (MHz) 167 Ordering Code CY7C1517V18-167BZC CY7C1528V18-167BZC CY7C1519V18-167BZC CY7C1521V18-167BZC CY7C1517V18-167BZXC CY7C1528V18-167BZXC CY7C1519V18-167BZXC CY7C1521V18-167BZXC CY7C1517V18-167BZI CY7C1528V18-167BZI CY7C1519V18-167BZI CY7C1521V18-167BZI CY7C1517V18-167BZXI CY7C1528V18-167BZXI CY7C1519V18-167BZXI CY7C1521V18-167BZXI 200 CY7C1517V18-200BZC CY7C1528V18-200BZC CY7C1519V18-200BZC CY7C1521V18-200BZC CY7C1517V18-200BZXC CY7C1528V18-200BZXC CY7C1519V18-200BZXC CY7C1521V18-200BZXC CY7C1517V18-200BZI CY7C1528V18-200BZI CY7C1519V18-200BZI CY7C1521V18-200BZI CY7C1517V18-200BZXI CY7C1528V18-200BZXI CY7C1519V18-200BZXI CY7C1521V18-200BZXI 250 CY7C1517V18-250BZC CY7C1528V18-250BZC CY7C1519V18-250BZC CY7C1521V18-250BZC CY7C1517V18-250BZXC CY7C1528V18-250BZXC CY7C1519V18-250BZXC CY7C1521V18-250BZXC 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Commercial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Industrial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Commercial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Industrial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free Package Diagram Package Type Operating Range Commercial
51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm)
Document #: 38-05565 Rev. *E
Page 25 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Ordering Information (continued)
Not all of the speed, package and temperature ranges are available. Please contact your local sales representative or visit www.cypress.com for actual products offered. Speed (MHz) 250 Ordering Code CY7C1517V18-250BZI CY7C1528V18-250BZI CY7C1519V18-250BZI CY7C1521V18-250BZI CY7C1517V18-250BZXI CY7C1528V18-250BZXI CY7C1519V18-250BZXI CY7C1521V18-250BZXI 278 CY7C1517V18-278BZC CY7C1528V18-278BZC CY7C1519V18-278BZC CY7C1521V18-278BZC CY7C1517V18-278BZXC CY7C1528V18-278BZXC CY7C1519V18-278BZXC CY7C1521V18-278BZXC CY7C1517V18-278BZI CY7C1528V18-278BZI CY7C1519V18-278BZI CY7C1521V18-278BZI CY7C1517V18-278BZXI CY7C1528V18-278BZXI CY7C1519V18-278BZXI CY7C1521V18-278BZXI 300 CY7C1517V18-300BZC CY7C1528V18-300BZC CY7C1519V18-300BZC CY7C1521V18-300BZC CY7C1517V18-300BZXC CY7C1528V18-300BZXC CY7C1519V18-300BZXC CY7C1521V18-300BZXC CY7C1517V18-300BZI CY7C1528V18-300BZI CY7C1519V18-300BZI CY7C1521V18-300BZI CY7C1517V18-300BZXI CY7C1528V18-300BZXI CY7C1519V18-300BZXI CY7C1521V18-300BZXI 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Industrial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Commercial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Industrial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Commercial 51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm) Lead-Free Package Diagram Package Type Operating Range Industrial
51-85195 165-ball Fine Pitch Ball Grid Array (15 x 17 x 1.4 mm)
Document #: 38-05565 Rev. *E
Page 26 of 28
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Package Diagram
165-ball FBGA (15 x 17 x 1.40 mm) (51-85195)
51-85195-*A
QDR SRAMs and Quad Data Rate SRAMs comprise a new family of products developed by Cypress, Hitachi, IDT, Micron, NEC and Samsung technology. All product and company names mentioned in this document are the trademarks of their respective holders.
Document #: 38-05565 Rev. *E
Page 27 of 28
(c) Cypress Semiconductor Corporation, 2006. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
CY7C1517V18 CY7C1528V18 CY7C1519V18 CY7C1521V18
Document History Page
Document Title: CY7C1517V18/CY7C1528V18/CY7C1519V18/CY7C1521V18 72-Mbit DDR-II SRAM 4-Word Burst Architecture Document Number: 38-05565 REV. ECN NO. ** *A Issue Date Orig. of Change DIM NJY New Data Sheet Modified ID code for the x9 option in the JTAG ID Register Definitions table on page 21 Corrected typo in the part numbers in the title; part number CY7C1519V18 changed to CY7C1528V18,part number CY7C1521V18 changed to CY7C1519V18 and part number CY7C1528V18 changed to CY7C1521V18 Corrected "Switching Waveforms" diagram Included thermal values Modified capacitance values table: included capacitance values for x8, x18 and x36 options Removed CY7C1528V18 from the title Included 300-MHz Speed Bin Added footnote #1 and accordingly edited the VSS/144M And VSS/288M on the Pin Definitions table Added Industrial Temperature Grade Replaced TBDs for IDD and ISB1 for 300 MHz, 250 MHz, 200 MHz and 167 MHz speed grades Changed the CIN from 5 pF to 5.5 pF and CO from 7 pF to 8 pF in the Capacitance Table Changed typo of bit # 47 to bit # 108 under the EXTEST OUTPUT BUS TRI-STATE on Page 17 Removed the capacitance value column for the x9 option from Capacitance Table Added lead-free product information Updated the Ordering Information by Shading and unshading as per availability Added CY7C1528V18 part number to title Added 278-MHz speed Bin Changed address of Cypress Semiconductor Corporation on Page# 1 from "3901 North First Street" to "198 Champion Court" Changed C, C Description in Feature Section and Pin Description Added power-up sequence details and waveforms Added foot notes #14, 15, 16 On page# 19 Replaced Three-state with Tri-state Changed the description of IX from Input Load Current to Input Leakage Current on page# 19 Modified the IDD and ISB current values Modified test condition in Footnote #18 on page# 20 from VDDQ < VDD to VDDQ < VDD Replaced Package Name column with Package Diagram in the Ordering Information table Converted from Preliminary to Final Modified the ZQ Definition from Alternately, this pin can be connected directly to VDD to Alternately, this pin can be connected directly to VDDQ Included Maximum Ratings for Supply Voltage on VDDQ Relative to GND Changed the Maximum Ratings for DC Input Voltage from VDDQ to VDD Changed tTH and tTL from 40 ns to 20 ns, changed tTMSS, tTDIS, tCS, tTMSH, tTDIH, tCH from 10 ns to 5 ns and changed tTDOV from 20 ns to 10 ns in TAP AC Switching Characteristics table Modified Power-Up waveform Changed the Maximum rating of Ambient Temperature with Power Applied from -10C to +85C to -55C to +125C Added additional notes in the AC parameter section Modified AC Switching Waveform Corrected the typo In the AC Switching Characteristics Table Updated the Ordering Information Table Corrected typo in the Functional Description section for burst counter logic Description of Change
226981 See ECN 257089 See ECN
*B
319496 See ECN
SYT
*C
409515 See ECN
NXR
*D
467290 See ECN
NXR
*E
505682 See ECN
VKN
Document #: 38-05565 Rev. *E
Page 28 of 28

▲Up To Search▲

Price & Availability of CY7C1528V18-167BZC

	To Download CY7C1528V18-167BZC Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .