CY7C1352G 4-Mbit (256 K × 18) Pipelined SRAM with NoBL™ Architecture 4-Mbit (256 K × 18) Pipelined SRAM with NoBL™ Architecture Features Functional Description ■ Pin compatible and functionally equivalent to ZBT™ devices ■ Internally self-timed output buffer control to eliminate the need to use OE ■ Byte write capability ■ 256 K × 18 common I/O architecture ■ 3.3 V core power supply (VDD) ■ 2.5 V/3.3 V I/O power supply (VDDQ) ■ Fast clock-to-output times ❐ 4.0 ns (for 133-MHz device) ■ Clock enable (CEN) pin to suspend operation ■ Synchronous self-timed writes ■ Asynchronous output enable (OE) ■ Available in Pb-free 100-pin TQFP package ■ Burst capability – linear or interleaved burst order ■ ZZ sleep mode option and stop clock option The CY7C1352G is a 3.3 V, 256 K × 18 synchronous-pipelined burst SRAM designed specifically to support unlimited true back-to-back read/write operations without the insertion of wait states. The CY7C1352G is equipped with the advanced No Bus Latency™ (NoBL™) logic required to enable consecutive read/write operations with data being transferred on every clock cycle. This feature dramatically improves the throughput of the SRAM, especially in systems that require frequent write/read transitions. All synchronous inputs pass through input registers controlled by the rising edge of the clock. All data outputs pass through output registers controlled by the rising edge of the clock. The clock input is qualified by the clock enable (CEN) signal, which, when deasserted, suspends operation and extends the previous clock cycle. Maximum access delay from the clock rise is 4.0 ns (133-MHz device). Write operations are controlled by the two byte write select (BW[A:B]) and a write enable (WE) input. All writes are conducted with on-chip synchronous self-timed write circuitry. Three synchronous chip enables (CE1, CE2, CE3) and an asynchronous output enable (OE) provide for easy bank selection and output tri-state control. In order to avoid bus contention, the output drivers are synchronously tri-stated during the data portion of a write sequence. Selection Guide Description 133 MHz 4.0 225 40 Maximum access time Maximum operating current Maximum CMOS standby current Unit ns mA mA Errata: For information on silicon errata, see "Errata" on page 18. Details include trigger conditions, devices affected, and proposed workaround. Cypress Semiconductor Corporation Document Number: 38-05514 Rev. *L • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised June 24, 2013 CY7C1352G Logic Block Diagram – CY7C1352G ADDRESS REGISTER 0 A0, A1, A A1 A1' D1 Q1 A0 BURST A0' D0 Q0 LOGIC MODE CLK CEN ADV/LD C C WRITE ADDRESS REGISTER 1 WRITE ADDRESS REGISTER 2 ADV/LD BWA WRITE REGISTRY AND DATA COHERENCY CONTROL LOGIC WRITE DRIVERS MEMORY ARRAY BWB WE S E N S E A M P S O U T P U T R E G I S T E R S D A T A S T E E R I N G E INPUT REGISTER 1 E OE CE1 CE2 CE3 ZZ Document Number: 38-05514 Rev. *L O U T P U T B U F F E R S DQs DQPA DQPB E INPUT REGISTER 0 E READ LOGIC Sleep Control Page 2 of 21 CY7C1352G Contents Pin Configuration ............................................................. 4 Pin Definitions .................................................................. 5 Functional Overview ........................................................ 6 Single Read Accesses ................................................ 6 Burst Read Accesses .................................................. 6 Single Write Accesses ................................................. 6 Burst Write Accesses .................................................. 6 Sleep Mode ................................................................. 7 Interleaved Burst Address Table ................................. 7 Linear Burst Address Table ......................................... 7 ZZ Mode Electrical Characteristics .............................. 7 Truth Table ........................................................................ 8 Truth Table for Read/Write .............................................. 9 Maximum Ratings ........................................................... 10 Operating Range ............................................................. 10 Electrical Characteristics ............................................... 10 Capacitance .................................................................... 11 Thermal Resistance ........................................................ 11 AC Test Loads and Waveforms ..................................... 11 Document Number: 38-05514 Rev. *L Switching Characteristics .............................................. 12 Switching Waveforms .................................................... 13 Ordering Information ...................................................... 15 Ordering Code Definitions ......................................... 15 Package Diagram ............................................................ 16 Acronyms ........................................................................ 17 Document Conventions ................................................. 17 Units of Measure ....................................................... 17 Errata ............................................................................... 18 Part Numbers Affected .............................................. 18 Product Status ........................................................... 18 Ram9 Sync/NoBL ZZ Pin Issues Errata Summary .... 18 Document History Page ................................................. 19 Sales, Solutions, and Legal Information ...................... 21 Worldwide Sales and Design Support ....................... 21 Products .................................................................... 21 PSoC® Solutions ...................................................... 21 Cypress Developer Community ................................. 21 Technical Support ..................................................... 21 Page 3 of 21 CY7C1352G Pin Configuration NC/18M NC/9M A A 85 84 83 82 81 CLK 89 OE VSS 90 ADV/LD VDD 91 86 CE3 92 WE BWA 93 CEN BWB 94 87 NC 95 88 CE2 NC CE1 98 96 A 97 A 99 NC 1 80 A NC 2 79 NC NC 3 78 NC VDDQ 4 77 5 VDDQ VSS 76 6 VSS NC NC 75 NC 7 74 DQB 8 DQPA 73 DQB 9 72 VSS DQA DQA 10 71 VDDQ 11 VSS 70 12 VDDQ DQB 69 DQB NC 13 DQA 68 14 DQA 67 VDD NC 15 66 16 65 VSS DQB DQB 17 64 VDD ZZ 18 63 19 DQA 62 VDDQ 20 DQA 61 VSS 21 VDDQ 60 DQB 22 VSS 59 CY7C1352G VSS NC 45 46 47 48 49 50 A A A A A A 43 NC/36M 44 42 A 41 VDD NC/72M 40 MODE VSS NC 39 51 NC/144M NC 30 38 52 NC NC/288M 29 37 53 NC A0 28 VDDQ NC 36 54 A1 27 VSS VDDQ NC 35 55 34 26 A NC VSS A NC 56 33 57 25 A 58 24 32 23 DQPB NC 31 DQB DQA DQA A BYTE B 100 Figure 1. 100-pin TQFP (14 × 20 × 1.4 mm) pinout BYTE A Note 1. Errata: The ZZ pin (Pin 64) needs to be externally connected to ground. For more information, see "Errata" on page 18. Document Number: 38-05514 Rev. *L Page 4 of 21 CY7C1352G Pin Definitions Name I/O Description A0, A1, A InputAddress inputs used to select one of the 256 K address location. Sampled at the rising edge of the synchronous CLK. A[1:0] are fed to the two-bit burst counter. BW[A:B] InputByte write inputs, active LOW. Qualified with WE to conduct writes to the SRAM. Sampled on the rising synchronous edge of CLK. WE InputWrite enable input, active LOW. Sampled on the rising edge of CLK if CEN is active LOW. This signal synchronous must be asserted LOW to initiate a write sequence. ADV/LD InputAdvance/load input. Used to advance the on-chip address counter or load a new address. When HIGH synchronous (and CEN is asserted LOW) the internal burst counter is advanced. When LOW, a new address can be loaded into the device for an access. After being deselected, ADV/LD should be driven LOW in order to load a new address. CLK Input-clock Clock input. Used to capture all synchronous inputs to the device. CLK is qualified with CEN. CLK is only recognized if CEN is active LOW. CE1 InputChip enable 1 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE2 synchronous and CE3 to select/deselect the device. CE2 InputChip enable 2 input, active HIGH. Sampled on the rising edge of CLK. Used in conjunction with CE1 synchronous and CE3 to select/deselect the device. CE3 InputChip enable 3 input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE1 synchronous and CE2 to select/deselect the device. OE InputOutput enable, asynchronous input, active LOW. Combined with the synchronous logic block inside asynchronous the device to control the direction of the I/O pins. When LOW, the DQ pins are allowed to behave as outputs. When deasserted HIGH, DQ pins are tri-stated, and act as input data pins. OE is masked during the data portion of a write sequence, during the first clock when emerging from a deselected state, when the device has been deselected. CEN InputClock enable input, active LOW. When asserted LOW the clock signal is recognized by the SRAM. synchronous When deasserted HIGH the clock signal is masked. Since deasserting CEN does not deselect the device, CEN can be used to extend the previous cycle when required. ZZ InputZZ “sleep” Input. This active HIGH input places the device in a non-time-critical “sleep” condition with asynchronous data integrity preserved. During normal operation, this pin has to be low or left floating. ZZ pin has an internal pull-down. DQs I/OBidirectional data I/O lines. As inputs, they feed into an on-chip data register that is triggered by the synchronous rising edge of CLK. As outputs, they deliver the data contained in the memory location specified by the address during the clock rise of the read cycle. The direction of the pins is controlled by OE and the internal control logic. When OE is asserted LOW, the pins can behave as outputs. When HIGH, DQs and DQP[A:B] are placed in a tri-state condition. The outputs are automatically tri-stated during the data portion of a write sequence, during the first clock when emerging from a deselected state, and when the device is deselected, regardless of the state of OE. DQP[A:B] I/OBidirectional data parity I/O lines. Functionally, these signals are identical to DQs. During write synchronous sequences, DQP[A:B] is controlled by BW[A:B] correspondingly. MODE Input strap pin Mode input. Selects the burst order of the device. When tied to GND selects linear burst sequence. When tied to VDD or left floating selects interleaved burst sequence. VDD Power supply Power supply inputs to the core of the device. VDDQ I/O power supply VSS Ground NC – Power supply for the I/O circuitry. Ground for the device. No Connects. Not internally connected to the die. Note 2. Errata: The ZZ pin (Pin 64) needs to be externally connected to ground. For more information, see "Errata" on page 18. Document Number: 38-05514 Rev. *L Page 5 of 21 CY7C1352G Pin Definitions (continued) Name NC/36M, NC/72M, NC/144M, NC/288M I/O Description – No Connects. Not internally connected to the die. NC/36M, NC/72M, NC/144M, NC/288M are address expansion pins are not internally connected to the die. Functional Overview The CY7C1352G is a synchronous-pipelined burst SRAM designed specifically to eliminate wait states during write/read transitions. All synchronous inputs pass through input registers controlled by the rising edge of the clock. The clock signal is qualified with the clock enable input signal (CEN). If CEN is HIGH, the clock signal is not recognized and all internal states are maintained. All synchronous operations are qualified with CEN. All data outputs pass through output registers controlled by the rising edge of the clock. Maximum access delay from the clock rise (tCO) is 4.0 ns (133-MHz device). Accesses can be initiated by asserting all three chip enables (CE1, CE2, CE3) active at the rising edge of the clock. If clock enable (CEN) is active LOW and ADV/LD is asserted LOW, the address presented to the device will be latched. The access can either be a read or write operation, depending on the status of the write enable (WE). BW[A:B] can be used to conduct byte write operations. Write operations are qualified by the write enable (WE). All writes are simplified with on-chip synchronous self-timed write circuitry. Three synchronous chip enables (CE1, CE2, CE3) and an asynchronous output enable (OE) simplify depth expansion. All operations (reads, writes, and deselects) are pipelined. ADV/LD should be driven LOW once the device has been deselected in order to load a new address for the next operation. Single Read Accesses described in the Single Read Accesses section above. The sequence of the burst counter is determined by the MODE input signal. A LOW input on MODE selects a linear burst mode, a HIGH selects an interleaved burst sequence. Both burst counters use A0 and A1 in the burst sequence, and will wrap-around when incremented sufficiently. A HIGH input on ADV/LD will increment the internal burst counter regardless of the state of chip enables inputs or WE. WE is latched at the beginning of a burst cycle. Therefore, the type of access (read or write) is maintained throughout the burst sequence. Single Write Accesses Write accesses are initiated when the following conditions are satisfied at clock rise: (1) CEN is asserted LOW, (2) CE1, CE2, and CE3 are all asserted active, and (3) the write signal WE is asserted LOW. The address presented to the address inputs is loaded into the address register. The write signals are latched into the control logic block. On the subsequent clock rise the data lines are automatically tri-stated regardless of the state of the OE input signal. This allows the external logic to present the data on DQs and DQP[A:B]. In addition, the address for the subsequent access (read/write/deselect) is latched into the address register (provided the appropriate control signals are asserted). On the next clock rise the data presented to DQs and DQP[A:B] (or a subset for byte write operations, see Write Cycle Description table for details) inputs is latched into the device and the write is complete. A read access is initiated when the following conditions are satisfied at clock rise: (1) CEN is asserted LOW, (2) CE1, CE2, and CE3 are all asserted active, (3) the write enable input signal WE is deasserted HIGH, and (4) ADV/LD is asserted LOW. The address presented to the address inputs is latched into the address register and presented to the memory core and control logic. The control logic determines that a read access is in progress and allows the requested data to propagate to the input of the output register. At the rising edge of the next clock the requested data is allowed to propagate through the output register and onto the data bus, provided OE is active LOW. After the first clock of the read access the output buffers are controlled by OE and the internal control logic. OE must be driven LOW in order for the device to drive out the requested data. During the second clock, a subsequent operation (read/write/deselect) can be initiated. Deselecting the device is also pipelined. Therefore, when the SRAM is deselected at clock rise by one of the chip enable signals, its output will tri-state following the next clock rise. Because the CY7C1352G is a common I/O device, data should not be driven into the device while the outputs are active. The output enable (OE) can be deasserted HIGH before presenting data to the DQs and DQP[A:B] inputs. Doing so will tri-state the output drivers. As a safety precaution, DQs and DQP[A:B] are automatically tri-stated during the data portion of a write cycle, regardless of the state of OE. Burst Read Accesses Burst Write Accesses The CY7C1352G has an on-chip burst counter that allows the user the ability to supply a single address and conduct up to four reads without reasserting the address inputs. ADV/LD must be driven LOW in order to load a new address into the SRAM, as The CY7C1352G has an on-chip burst counter that allows the user the ability to supply a single address and conduct up to four write operations without reasserting the address inputs. ADV/LD must be driven LOW in order to load the initial address, as Document Number: 38-05514 Rev. *L The data written during the write operation is controlled by BW[A:B] signals. The CY7C1352G provides byte write capability that is described in the Write Cycle Description table. Asserting the write enable input (WE) with the selected byte write select (BW[A:B]) input will selectively write to only the desired bytes. Bytes not selected during a byte write operation will remain unaltered. A synchronous self-timed write mechanism has been provided to simplify the write operations. Byte write capability has been included in order to greatly simplify read/modify/write sequences, which can be reduced to simple byte write operations. Page 6 of 21 CY7C1352G described in the Single Write Accesses section above. When ADV/LD is driven HIGH on the subsequent clock rise, the chip enables (CE1, CE2, and CE3) and WE inputs are ignored and the burst counter is incremented. The correct BW[A:B] inputs must be driven in each cycle of the burst write in order to write the correct bytes of data. Interleaved Burst Address Table (MODE = Floating or VDD) Sleep Mode The ZZ input pin is an asynchronous input. Asserting ZZ places the SRAM in a power conservation “sleep” mode. Two clock cycles are required to enter into or exit from this “sleep” mode. While in this mode, data integrity is guaranteed. Accesses pending when entering the “sleep” mode are not considered valid nor is the completion of the operation guaranteed. The device must be deselected prior to entering the “sleep” mode. CE1, CE2, and CE3, must remain inactive for the duration of tZZREC after the ZZ input returns LOW. First Address A1:A0 Second Address A1:A0 Third Address A1:A0 Fourth Address A1:A0 00 01 10 11 01 00 11 10 10 11 00 01 11 10 01 00 Fourth Address A1:A0 Linear Burst Address Table (MODE = GND) First Address A1:A0 Second Address A1:A0 Third Address A1:A0 00 01 10 11 01 10 11 00 10 11 00 01 11 00 01 10 ZZ Mode Electrical Characteristics Parameter Description Test Conditions IDDZZ Snooze mode standby current ZZ > VDD 0.2 V tZZS Device operation to ZZ ZZ > VDD 0.2 V tZZREC ZZ recovery time ZZ < 0.2 V tZZI ZZ active to snooze current tRZZI Min Max Unit – 40 mA – 2tCYC ns 2tCYC – ns This parameter is sampled – 2tCYC ns ZZ inactive to exit snooze current This parameter is sampled 0 – ns Document Number: 38-05514 Rev. *L Page 7 of 21 CY7C1352G Truth Table The Truth Table for CY7C1352G follows. [3, 4, 5, 6, 7, 8, 9] Operation Address Used CE ZZ ADV/LD WE BWx OE CEN CLK DQ Deselect cycle None H L L X X X L L–H Tri-state Continue deselect cycle None X L H X X X L L–H Tri-state Read cycle (begin burst) External L L L H X L L L–H Data out (Q) Read cycle (continue burst) Next X L H X X L L L–H Data out (Q) NOP/dummy read (begin burst) External L L L H X H L L–H Tri-state Dummy read (continue burst) Next X L H X X H L L–H Tri-state Write cycle (begin burst) External L L L L L X L L–H Data in (D) Write cycle (continue burst) Next X L H X L X L L–H Data in (D) NOP/WRITE ABORT (begin burst) None L L L L H X L L–H Tri-state WRITE ABORT (continue burst) Next X L H X H X L L–H Tri-state IGNORE CLOCK EDGE (stall) Current X L X X X X H L–H – SNOOZE MODE None X H X X X X X X Tri-state Notes 3. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. CE stands for all chip enables active. BWX = L signifies at least one byte write select is active, BWX = valid signifies that the desired byte write selects are asserted, see Write Cycle Description table for details. 4. Write is defined by BW[A:B], and WE. See Write Cycle Descriptions table. 5. When a write cycle is detected, all I/Os are tri-stated, even during byte writes. 6. The DQ and DQP pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock. 7. CEN = H, inserts wait states. 8. Device will power-up deselected and the I/Os in a tri-state condition, regardless of OE. 9. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle DQs and DQP[A:B] = tri-state when OE is inactive or when the device is deselected, and DQs and DQP[A:B] = data when OE is active. Document Number: 38-05514 Rev. *L Page 8 of 21 CY7C1352G Truth Table for Read/Write The Truth Table for Read/Write for CY7C1352G follows. [10, 11] Function WE H BWB X BWA X L H H Write byte A(DQA and DQPA) L H L Write byte B(DQB and DQPB) L L H Write all bytes L L L Read Write No bytes written Notes 10. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. CE stands for all chip enables active. BWX = L signifies at least one byte write select is active, BWX = valid signifies that the desired byte write selects are asserted, see Write Cycle Description table for details. 11. Write is defined by BW[A:B], and WE. See Write Cycle Descriptions table. Document Number: 38-05514 Rev. *L Page 9 of 21 CY7C1352G DC input voltage 0.5 V to VDD + 0.5 V Maximum Ratings Exceeding maximum ratings may impair the useful life of the device. These user guidelines are not tested. Storage temperature 65 °C to +150 °C Ambient temperature with power applied 55 °C to +125 °C Supply voltage on VDD relative to GND 0.5 V to +4.6 V Current into outputs (LOW) ........................................ 20 mA Static discharge voltage (per MIL-STD-883, method 3015) .......................... > 2001 V Latch-up current .................................................... > 200 mA Operating Range Supply voltage on VDDQ relative to GND 0.5 V to +VDD Range DC voltage applied to outputs in tri-state 0.5 V to VDDQ + 0.5 V Ambient Temperature (TA) Commercial 0 °C to +70 °C VDD VDDQ 3.3 V – 5% / +10% 2.5 V – 5% to VDD Electrical Characteristics Over the Operating Range Parameter [12, 13] Min Max Unit VDD Power supply voltage Description Test Conditions 3.135 3.6 V VDDQ I/O supply voltage 2.375 VDD V VOH Output HIGH voltage for 3.3 V I/O, IOH = –4.0 mA 2.4 – V for 2.5 V I/O, IOH = –1.0 mA VOL Output LOW voltage 2.0 – V for 3.3 V I/O, IOL = 8.0 mA – 0.4 V for 2.5 V I/O, IOL = 1.0 mA – 0.4 V 2.0 VDD + 0.3 V V VIH Input HIGH voltage  for 3.3 V I/O for 2.5 V I/O 1.7 VDD + 0.3 V V VIL Input LOW voltage  for 3.3 V I/O –0.3 0.8 V for 2.5 V I/O –0.3 0.7 V Input leakage current except ZZ GND VI VDDQ and MODE 5 5 µA Input current of MODE Input = VSS 30 – µA Input = VDD – 5 µA IX Input current of ZZ Input = VSS –5 – µA Input = VDD – 30 µA IOZ Output leakage current GND VI VDDQ, output disabled –5 5 µA IDD VDD operating supply current VDD = Max, IOUT = 0 mA, f = fMAX = 1/tCYC 7.5-ns cycle, 133 MHz – 225 mA ISB1 Automatic CE power-down current – TTL inputs VDD = Max, device deselected, VIN VIH or VIN VIL, f = fMAX = 1/tCYC 7.5-ns cycle, 133 MHz – 90 mA ISB2 Automatic CE power-down current – CMOS inputs VDD = Max, device deselected, 7.5-ns cycle, VIN 0.3 V or VIN > VDDQ – 0.3 V, 133 MHz f=0 – 40 mA ISB3 Automatic CE power-down current – CMOS Inputs VDD = Max, device deselected, 7.5-ns cycle, VIN 0.3 V or VIN > VDDQ – 0.3 V, 133 MHz f = fMAX = 1/tCYC – 75 mA Notes 12. Overshoot: VIH(AC) < VDD + 1.5 V (Pulse width less than tCYC/2), undershoot: VIL(AC) > –2 V (Pulse width less than tCYC/2). 13. TPower-up: Assumes a linear ramp from 0 V to VDD(min) within 200 ms. During this time VIH < VDD and VDDQ < VDD. Document Number: 38-05514 Rev. *L Page 10 of 21 CY7C1352G Electrical Characteristics (continued) Over the Operating Range Parameter [12, 13] Description Test Conditions Automatic CE power-down current – TTL inputs ISB4 7.5-ns cycle, 133 MHz VDD = Max, device deselected, VIN VIH or VIN VIL, f = 0 Min Max Unit – 45 mA Capacitance Parameter  100-pin TQFP Max Unit 5 pF 5 pF 5 pF Test Conditions 100-pin TQFP Package Unit Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA/JESD51. 30.32 °C/W 6.85 °C/W Description CIN Input capacitance CCLK Clock input capacitance CI/O Input/output capacitance Test Conditions TA = 25 °C, f = 1 MHz, VDD = 3.3 V, VDDQ = 3.3 V Thermal Resistance Parameter  Description JA Thermal resistance (junction to ambient) JC Thermal resistance (junction to case) AC Test Loads and Waveforms Figure 2. AC Test Loads and Waveforms 3.3 V I/O Test Load OUTPUT RL = 50 Z0 = 50 GND 5 pF INCLUDING JIG AND SCOPE 2.5 V I/O Test Load 2.5 V OUTPUT R = 351 VT = 1.25 V (a) 5 pF INCLUDING JIG AND SCOPE 10% 90% 10% 90% 1 ns 1 ns (c) (b) R = 1667 ALL INPUT PULSES VDDQ OUTPUT RL = 50 Z0 = 50 ALL INPUT PULSES VDDQ VT = 1.5 V (a) 1ns R = 317 3.3 V OUTPUT GND R = 1538 (b) 10% 90% 10% 90% 1 ns 1 ns (c) Note 14. Tested initially and after any design or process changes that may affect these parameters. Document Number: 38-05514 Rev. *L Page 11 of 21 CY7C1352G Switching Characteristics Over the Operating Range Parameter [15, 16] tPOWER Description VDD(typical) to the first access  -133 Unit Min Max 1 – ms Clock tCYC Clock cycle time 7.5 – ns tCH Clock HIGH 3.0 – ns tCL Clock LOW 3.0 – ns Output Times tCO Data output valid after CLK rise – 4.0 ns tDOH Data output hold after CLK rise 1.5 – ns 0 – ns tCLZ Clock to low Z [18, 19, 20] [18, 19, 20] tCHZ Clock to high Z tOEV OE LOW to output valid tOELZ OE LOW to output low Z [18, 19, 20] tOEHZ OE HIGH to output high Z [18, 19, 20] – 4.0 ns – 4.0 ns 0 – ns – 4.0 ns Set-up Times tAS Address set-up before CLK rise 1.5 – ns tALS ADV/LD set-up before CLK rise 1.5 – ns tWES GW, BW[A:B] set-up before CLK rise 1.5 – ns tCENS CEN set-up before CLK rise 1.5 – ns tDS Data input set-up before CLK rise 1.5 – ns tCES Chip enable set-up before CLK rise 1.5 – ns Hold Times tAH Address hold after CLK rise 0.5 – ns tALH ADV/LD hold after CLK rise 0.5 – ns tWEH GW, BW[A:B] hold after CLK rise 0.5 – ns tCENH CEN hold after CLK rise 0.5 – ns tDH Data input hold after CLK rise 0.5 – ns tCEH Chip enable hold after CLK rise 0.5 – ns Notes 15. Timing reference level is 1.5 V when VDDQ = 3.3 V and is 1.25 V when VDDQ = 2.5 V. 16. Test conditions shown in (a) of Figure 2 on page 11 unless otherwise noted. 17. 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. 18. tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of Figure 2 on page 11. Transition is measured ± 200 mV from steady-state voltage. 19. At any given voltage and temperature, tOEHZ is less than tOELZ and tCHZ is less than tCLZ to eliminate bus contention between SRAMs when sharing the same data bus. These specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user conditions. Device is designed to achieve tri-state prior to low Z under the same system conditions. 20. This parameter is sampled and not 100% tested. Document Number: 38-05514 Rev. *L Page 12 of 21 CY7C1352G Switching Waveforms Figure 3. Read/Write Timing [21, 22, 23] 1 2 3 t CYC 4 5 6 A3 A4 7 8 9 A5 A6 A7 10 CLK tCENS tCENH tCH tCL CEN tCES tCEH CE ADV/LD WE BW[A:B] A1 ADDRESS A2 tCO tAS tDS tAH Data In-Out (DQ) tDH D(A1) tCLZ D(A2) D(A2+1) tDOH Q(A3) tOEV Q(A4) tCHZ Q(A4+1) D(A5) Q(A6) tOEHZ tDOH tOELZ OE WRITE D(A1) WRITE D(A2) BURST WRITE D(A2+1) READ Q(A3) READ Q(A4) DON’T CARE BURST READ Q(A4+1) WRITE D(A5) READ Q(A6) WRITE D(A7) DESELECT UNDEFINED Notes 21. For this waveform, ZZ is tied low. 22. When CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH. 23. Order of the burst sequence is determined by the status of the MODE (0 = Linear, 1 = Interleaved). Burst operations are optional. Document Number: 38-05514 Rev. *L Page 13 of 21 CY7C1352G Switching Waveforms (continued) Figure 4. NOP, STALL, and DESELECT Cycles [24, 25, 26] 1 2 A1 A2 3 4 5 A3 A4 6 7 8 9 10 CLK CEN CE ADV/LD WE BW[A:B] ADDRESS A5 tCHZ D(A1) Data In-Out (DQ) WRITE D(A1) READ Q(A2) STALL READ Q(A3) DON’T CARE Q(A2) D(A4) Q(A3) WRITE D(A4) STALL NOP READ Q(A5) Q(A5) DESELECT CONTINUE DESELECT UNDEFINED Figure 5. ZZ Mode Timing [27, 28] CLK t ZZ ZZ I t ZZREC t ZZI SUPPLY I ALL INPUTS (except ZZ) DDZZ t RZZI DESELECT or READ Only Notes 24. For this waveform, ZZ is tied low. 25. When CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH. 26. The IGNORE CLOCK EDGE or STALL cycle (Clock 3) illustrated CEN being used to create a pause. A write is not performed during this cycle. 27. Device must be deselected when entering ZZ mode. See cycle description table for all possible signal conditions to deselect the device. 28. DQs are in high Z when exiting ZZ sleep mode. Document Number: 38-05514 Rev. *L Page 14 of 21 CY7C1352G Ordering Information Cypress offers other versions of this type of product in many different configurations and features. The following table contains only the list of parts that are currently available. For a complete listing of all options, visit the Cypress website at www.cypress.com and refer to the product summary page at http://www.cypress.com/products or contact your local sales representative. Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives and distributors. To find the office closest to you, visit us at http://www.cypress.com/go/datasheet/offices. Speed (MHz) 133 Package Diagram Ordering Code CY7C1352G-133AXC Package Type 51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free Operating Range Commercial Ordering Code Definitions CY 7 C 1352 G - 133 A X C Temperature Range: C = Commercial Pb-free Package Type: A = 100-pin TQFP Speed Grade: 133 MHz Process Technology: G 90 nm Part Identifier: 1352 = PL, 256 Kb × 18 (4 Mb) Technology Code: C = CMOS Marketing Code: 7 = SRAM Company ID: CY = Cypress Document Number: 38-05514 Rev. *L Page 15 of 21 CY7C1352G Package Diagram Figure 6. 100-pin TQFP (14 × 20 × 1.4 mm) A100RA Package Outline, 51-85050 51-85050 *D Document Number: 38-05514 Rev. *L Page 16 of 21 CY7C1352G Acronyms Acronym Document Conventions Description Units of Measure CE Chip Enable CEN Clock Enable °C degree Celsius CMOS Complementary Metal Oxide Semiconductor MHz megahertz EIA Electronic Industries Alliance µA microampere I/O Input/Output mA milliampere JEDEC Joint Electron Devices Engineering Council mm millimeter NoBL No Bus Latency ms millisecond OE Output Enable mV millivolt SEL Single Event Latch-up nm nanometer SRAM Static Random Access Memory ns nanosecond TQFP Thin Quad Flat Pack ohm TTL Transistor-Transistor Logic % percent WE Write Enable pF picofarad V volt W watt Document Number: 38-05514 Rev. *L Symbol Unit of Measure Page 17 of 21 CY7C1352G Errata This section describes the Ram9 Sync/NoBL ZZ pin, JTAG and Chip Enable issues. Details include trigger conditions, the devices affected, proposed workaround and silicon revision applicability. Please contact your local Cypress sales representative if you have further questions. Part Numbers Affected Density & Revision Package Type Operating Range 4Mb-Ram9 NoBL™ SRAMs: CY7C135*G All packages Commercial/ Industrial Product Status All of the devices in the Ram9 4Mb Sync/NoBL family are qualified and available in production quantities. Ram9 Sync/NoBL ZZ Pin Issues Errata Summary The following table defines the errata applicable to available Ram9 4Mb Sync/NoBL family devices. Item 1. Issues ZZ Pin Description Device When asserted HIGH, the ZZ pin places device in a “sleep” condition with data integrity preserved.The ZZ pin currently does not have an internal pull-down resistor and hence cannot be left floating externally by the user during normal mode of operation. 4M-Ram9 (90nm) Fix Status For the 4M Ram9 (90 nm) devices, there is no plan to fix this issue. 1. ZZ Pin Issue ■ PROBLEM DEFINITION The problem occurs only when the device is operated in the normal mode with ZZ pin left floating. The ZZ pin on the SRAM device does not have an internal pull-down resistor. Switching noise in the system may cause the SRAM to recognize a HIGH on the ZZ input, which may cause the SRAM to enter sleep mode. This could result in incorrect or undesirable operation of the SRAM. ■ TRIGGER CONDITIONS Device operated with ZZ pin left floating. ■ SCOPE OF IMPACT When the ZZ pin is left floating, the device delivers incorrect data. ■ WORKAROUND Tie the ZZ pin externally to ground. ■ FIX STATUS Fix was done for the 72Mb RAM9 Synchronous SRAMs and 72M RAM9 NoBL SRAMs devices. Fixed devices have a new revision. The following table lists the devices affected and the new revision after the fix. Document Number: 38-05514 Rev. *L Page 18 of 21 CY7C1352G Document History Page Document Title: CY7C1352G, 4-Mbit (256 K × 18) Pipelined SRAM with NoBL™ Architecture Document Number: 38-05514 Rev. ECN No. Issue Date Orig. of Change Description of Change ** 224362 See ECN RKF New data sheet. *A 288431 See ECN VBL Updated Features (Removed 225 MHz, 100 MHz frequencies related information). Updated Selection Guide (Removed 225 MHz, 100 MHz frequencies related information). Updated Electrical Characteristics (Removed 225 MHz, 100 MHz frequencies related information). Updated Switching Characteristics (Removed 225 MHz, 100 MHz frequencies related information). Updated Ordering Information (Changed TQFP package in Ordering Information section to lead-free TQFP). *B 332895 See ECN SYT Updated Pin Configuration (Modified Address Expansion balls in the pinouts for 100-pin TQFP Package as per JEDEC standards). Updated Pin Definitions. Updated Electrical Characteristics (Updated Test Conditions of VOL, VOH parameters). Updated Thermal Resistance (Replaced values of JA and JC parameters from TBD to respective Thermal Values for all Packages). Updated Ordering Information (By shading and unshading MPNs as per availability, added lead-free product information for 119-ball BGA). *C 419256 See ECN RXU Changed status from Preliminary to Final. Changed address of Cypress Semiconductor Corporation from “3901 North First Street” to “198 Champion Court”. Updated Electrical Characteristics (Updated Note 13 (Modified test condition from VIH < VDD to VIH VDD, modified test condition from VDDQ < VDD to VDDQ < VDD), changed “Input Load Current except ZZ and MODE” to “Input Leakage Current except ZZ and MODE”). Updated Ordering Information (Updated part numbers, replaced Package Name column with Package Diagram in the Ordering Information table). Updated Package Diagram (spec 51-85050 (changed revision from *A to *B)). *D 480124 See ECN VKN Updated Maximum Ratings (Added the Maximum Rating for Supply Voltage on VDDQ Relative to GND). Updated Ordering Information (Updated part numbers). *E 2896584 03/20/2010 NJY Updated Ordering Information (Removed obsolete part numbers from Ordering Information table). Updated Package Diagram. *F 3023558 09/14/2010 NJY Added Ordering Code Definitions. Added Acronyms and Units of Measure. Minor edits and updated in new template. *G 3052777 10/08/10 NJY Updated Ordering Information (Removed pruned part CY7C1352G-133AXI from the ordering information table). *H 3370121 09/13/2011 PRIT Updated Package Diagram. Document Number: 38-05514 Rev. *L Page 19 of 21 CY7C1352G Document History Page (continued) Document Title: CY7C1352G, 4-Mbit (256 K × 18) Pipelined SRAM with NoBL™ Architecture Document Number: 38-05514 Rev. ECN No. Issue Date Orig. of Change Description of Change *I 3616656 05/14/2012 PRIT Updated Features (Removed 250 MHz, 200 MHz, 166 MHz frequencies related information). Updated Functional Description (Removed the Note “For best-practices recommendations, refer to the Cypress application note System Design Guidelines on www.cypress.com.” and its reference). Updated Selection Guide (Removed 250 MHz, 200 MHz, 166 MHz frequencies related information). Updated Functional Overview (Removed 250 MHz, 200 MHz, 166 MHz frequencies related information). Updated Operating Range (Removed Industrial Temperature Range). Updated Electrical Characteristics (Removed 250 MHz, 200 MHz, 166 MHz frequencies related information). Updated Switching Characteristics (Removed 250 MHz, 200 MHz, 166 MHz frequencies related information). *J 3751125 09/21/2012 PRIT No technical updates. Completing sunset review. *K 3980362 04/24/2013 PRIT Added Errata. *L 4038283 06/24/2013 PRIT Added Errata Footnotes. Updated in new template. Document Number: 38-05514 Rev. *L Page 20 of 21 CY7C1352G Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. PSoC® Solutions Products Automotive Clocks & Buffers Interface Lighting & Power Control cypress.com/go/automotive cypress.com/go/clocks cypress.com/go/interface cypress.com/go/powerpsoc cypress.com/go/plc Memory cypress.com/go/memory PSoC cypress.com/go/psoc Touch Sensing PSoC 1 | PSoC 3 | PSoC 4 | PSoC 5LP Cypress Developer Community Community | Forums | Blogs | Video | Training Technical Support cypress.com/go/support cypress.com/go/touch USB Controllers Wireless/RF psoc.cypress.com/solutions cypress.com/go/USB cypress.com/go/wireless © Cypress Semiconductor Corporation, 2004-2013. 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. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. 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’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. Document Number: 38-05514 Rev. *L Revised June 24, 2013 Page 21 of 21 ZBT is a trademark of Integrated Device Technology, Inc. NoBL and No Bus Latency are trademarks of Cypress Semiconductor Corporation. All products and company names mentioned in this document may be the trademarks of their respective holders.