CY7C1219F-133AC

CY7C1219F 1-Mbit (32K x 36) Pipelined DCD Sync SRAM Functional Description[1] Features • Registered inputs and outputs for pipelined operation • Optimal for performance (Double-Cycle deselect) — Depth expansion without wait state • 32K × 36-bit common I/O architecture • 3.3V –5% and +10% core power supply (VDD) • 3.3V I/O supply (VDDQ) • Fast clock-to-output times — 3.5 ns (for 166-MHz device) — 4.0 ns (for 133-MHz device) • Provide high-performance 3-1-1-1 access rate • User-selectable burst counter supporting Intel Pentium interleaved or linear burst sequences • Separate processor and controller address strobes • Synchronous self-timed writes • Asynchronous Output Enable • JEDEC-standard 100-pin TQFP package and pinout • “ZZ” Sleep Mode option The CY7C1219F SRAM integrates 32,768 x 36 SRAM cells with advanced synchronous peripheral circuitry and a two-bit counter for internal burst operation. All synchronous inputs are gated by registers controlled by a positive-edge-triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address-pipelining Chip Enable (CE1), depth-expansion Chip Enables (CE2 and CE3), Burst Control inputs (ADSC, ADSP, and ADV), Write Enables (BW[A:D], and BWE), and Global Write (GW). Asynchronous inputs include the Output Enable (OE) and the ZZ pin. Addresses and chip enables are registered at rising edge of clock when either Address Strobe Processor (ADSP) or Address Strobe Controller (ADSC) are active. Subsequent burst addresses can be internally generated as controlled by the Advance pin (ADV). Address, data inputs, and write controls are registered on-chip to initiate a self-timed Write cycle.This part supports Byte Write operations (see Pin Descriptions and Truth Table for further details). Write cycles can be one to four bytes wide as controlled by the byte write control inputs. GW active LOW causes all bytes to be written. This device incorporates an additional pipelined enable register which delays turning off the output buffers an additional cycle when a deselect is executed.This feature allows depth expansion without penalizing system performance. The CY7C1219F operates from a +3.3V core power supply while all outputs operate with a +3.3V supply. All inputs and outputs are JEDEC-standard JESD8-5-compatible. Selection Guide 166 MHz 133 MHz Unit Maximum Access Time 3.5 4.0 ns Maximum Operating Current 240 225 mA Maximum CMOS Standby Current 40 40 mA Shaded area contains advance information. Please contact your local Cypress sales representative for availability of this part. Notes: 1. For best-practices recommendations, please refer to the Cypress application note System Design Guidelines on www.cypress.com. Cypress Semiconductor Corporation Document #: 38-05416 Rev. *A • 3901 North First Street • San Jose, CA 95134 • 408-943-2600 Revised April 10, 2004 CY7C1219F Functional Block Diagram—32Kx36 ADDRESS REGISTER A0,A1,A 2 A[1:0] MODE ADV CLK BINARY Q1 COUNTER AND LOGIC CLR Q0 ADSC ADSP BWD DQD,DQPD BYTE WRITE REGISTER DQD, DQPD BYTE WRITE DRIVER BWC DQc ,DQPC BYTE WRITE REGISTER DQC, DQPc BYTE WRITE DRIVER DQB ,DQPB BYTE WRITE REGISTER DQB ,DQPB BYTE WRITE DRIVER BWB BWA BWE GW CE1 CE2 CE3 OE ZZ SENSE AMPS OUTPUT REGISTERS DQs DQPA DQPB DQPC DQPD OUTPUT BUFFERS E DQA , DQPA BYTE WRITE DRIVER DQA , DQPA BYTE WRITE REGISTER ENABLE REGISTER MEMORY ARRAY PIPELINED ENABLE INPUT REGISTERS SLEEP CONTROL Document #: 38-05416 Rev. *A Page 2 of 15 CY7C1219F Pin Configurations CE1 CE2 BWD BWC BWB BWA CE3 VDD VSS CLK GW BWE OE ADSC ADSP ADV A A 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 A A 100-pin TQFP Top View 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 CY7C1219F (32K x 36) DQPB DQB DQB VDDQ VSSQ DQB DQB DQB DQB VSSQ VDDQ DQB DQB VSS NC VDD ZZ DQA DQA VDDQ VSSQ DQA DQA DQA DQA VSSQ VDDQ DQA DQA DQPA Document #: 38-05416 Rev. *A A A A A A NC NC NC NC NC NC VSS VDD MODE A A A A A1 A0 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 DQPc DQc DQc VDDQ VSSQ DQc DQc DQc DQc VSSQ VDDQ DQc DQc NC VDD NC VSS DQD DQD VDDQ VSSQ DQD DQD DQD DQD VSSQ VDDQ DQD DQD DQPD Page 3 of 15 CY7C1219F Pin Descriptions Pin A0, A1, A TQFP Type Description 37,36,32,33 34,35,44,45, 46,47,48,81, 82,99,100 InputAddress Inputs used to select one of the 32K address locations. Sampled at Synchronous the rising edge of the CLK if ADSP or ADSC is active LOW, and CE1, CE2, and CE3 are sampled active. A[1:0] are fed to the two-bit counter. BWA, BWB, 93,94,95,96 BWC, BWD InputByte Write Select Inputs, active LOW. Qualified with BWE to conduct byte writes Synchronous to the SRAM. Sampled on the rising edge of CLK. InputGlobal Write Enable Input, active LOW. When asserted LOW on the rising edge Synchronous of CLK, a global write is conducted (ALL bytes are written, regardless of the values on BW[A:D] and BWE). GW 88 BWE 87 CLK 89 CE1 98 InputChip Enable 1 Input, active LOW. Sampled on the rising edge of CLK. Used in Synchronous conjunction with CE2 and CE3 to select/deselect the device. ADSP is ignored if CE1 is HIGH. CE2 97 InputChip Enable 2 Input, active HIGH. Sampled on the rising edge of CLK. Used in Synchronous conjunction with CE1 and CE3 to select/deselect the device. CE3 92 InputChip Enable 3 Input, active LOW. Sampled on the rising edge of CLK. Used in Synchronous conjunction with CE1 and CE2 to select/deselect the device. OE 86 InputOutput Enable, asynchronous input, active LOW. Controls the direction of the Asynchronous I/O pins. When LOW, the I/O pins behave as outputs. When deasserted HIGH, I/O pins are three-stated, and act as input data pins. OE is masked during the first clock of a read cycle when emerging from a deselected state. ADV 83 InputAdvance Input signal, sampled on the rising edge of CLK, active LOW. When Synchronous asserted, it automatically increments the address in a burst cycle. ADSP 84 InputAddress Strobe from Processor, sampled on the rising edge of CLK, active Synchronous LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A[1:0] are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. ASDP is ignored when CE1 is deasserted HIGH. 85 InputAddress Strobe from Controller, sampled on the rising edge of CLK, active Synchronous LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A[1:0] are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. 64 InputZZ “sleep” Input, active HIGH. When asserted HIGH places the device in a Asynchronous non-time-critical “sleep” condition with data integrity preserved. For normal operation, this pin has to be LOW or left floating. ZZ pin has an internal pull-down. DQs DQP[A:D] 52,53,56,57, 58,59,62,63 68,69,72,73, 74,75,78,79 2,3,6,7,8,9, 12,13 18,19,22,23, 24,25,28,29, 1,30,51,80 I/OBidirectional Data I/O lines. As inputs, they feed into an on-chip data register that Synchronous is triggered by the rising edge of CLK. As outputs, they deliver the data contained in the memory location specified by the addresses presented during the previous clock rise of the read cycle. The direction of the pins is controlled by OE. When OE is asserted LOW, the pins behave as outputs. When HIGH, DQs and DQP[A:D] are placed in a three-state condition. VDD 15,41,65, 91 Power Supply Power supply inputs to the core of the device. VSS 17,40,67, 90 VDDQ 4,11,20,27, 54,61,70, 77 ADSC ZZ InputByte Write Enable Input, active LOW. Sampled on the rising edge of CLK. This Synchronous signal must be asserted LOW to conduct a byte write. InputClock Clock Input. Used to capture all synchronous inputs to the device. Also used to increment the burst counter when ADV is asserted LOW, during a burst operation. Ground Ground for the core of the device. I/O Power Supply Power supply for the I/O circuitry. Document #: 38-05416 Rev. *A Page 4 of 15 CY7C1219F Pin Descriptions (continued) Pin TQFP VSSQ 5,10,21,26, 55,60,71, 76 MODE 31 NC 14,16,38,39, 42,43,49,50, 66 Type I/O Ground InputStatic Description Ground for the I/O circuitry. Selects Burst Order. When tied to GND selects linear burst sequence. When tied to VDD or left floating selects interleaved burst sequence. This is a strap pin and should remain static during device operation. Mode Pin has an internal pull-up. No Connects. Not internally connected to the die. Functional Overview 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 CY7C1219F supports secondary cache in systems utilizing either a linear or interleaved burst sequence. The interleaved burst order supports Pentium and i486 processors. The linear burst sequence is suited for processors that utilize a linear burst sequence. The burst order is user selectable, and is determined by sampling the MODE input. Accesses can be initiated with either the Processor Address Strobe (ADSP) or the Controller Address Strobe (ADSC). Address advancement through the burst sequence is controlled by the ADV input. A two-bit on-chip wraparound burst counter captures the first address in a burst sequence and automatically increments the address for the rest of the burst access. Byte Write operations are qualified with the Byte Write Enable (BWE) and Byte Write Select (BW[A:D]) inputs. A Global Write Enable (GW) overrides all byte write inputs and writes data to all four bytes. All writes are simplified with on-chip synchronous self-timed write circuitry. Synchronous Chip Selects CE1, CE2, CE3 and an asynchronous Output Enable (OE) provide for easy bank selection and output three-state control. ADSP is ignored if CE1 is HIGH. Single Read Accesses This access is initiated when the following conditions are satisfied at clock rise: (1) ADSP or ADSC is asserted LOW, (2) chip selects are all asserted active, and (3) the Write signals (GW, BWE) are all deasserted HIGH. ADSP is ignored if CE1 is HIGH. The address presented to the address inputs is stored into the address advancement logic and the Address Register while being presented to the memory core. The corresponding data is allowed to propagate to the input of the Output Registers. At the rising edge of the next clock the data is allowed to propagate through the output register and onto the data bus within tCO if OE is active LOW. The only exception occurs when the SRAM is emerging from a deselected state to a selected state, its outputs are always three-stated during the first cycle of the access. After the first cycle of the access, the outputs are controlled by the OE signal. Consecutive single read cycles are supported. The CY7C1219F is a double-cycle deselect part. Once the SRAM is deselected at clock rise by the chip select and either ADSP or ADSC signals, its output will three-state immediately after the next clock rise. Document #: 38-05416 Rev. *A Single Write Accesses Initiated by ADSP This access is initiated when both of the following conditions are satisfied at clock rise: (1) ADSP is asserted LOW, and (2) chip select is asserted active. The address presented is loaded into the address register and the address advancement logic while being delivered to the memory core. The write signals (GW, BWE, and BW[A:D]) and ADV inputs are ignored during this first cycle. ADSP triggered write accesses require two clock cycles to complete. If GW is asserted LOW on the second clock rise, the data presented to the DQx inputs is written into the corresponding address location in the memory core. If GW is HIGH, then the write operation is controlled by BWE and BW[A:D] signals. The CY7C1219F provides byte write capability that is described in the Write Cycle Description table. Asserting the Byte Write Enable input (BWE) with the selected Byte Write 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. Because the CY7C1219F is a common I/O device, the Output Enable (OE) must be deasserted HIGH before presenting data to the DQ inputs. Doing so will three-state the output drivers. As a safety precaution, DQ are automatically three-stated whenever a write cycle is detected, regardless of the state of OE. Single Write Accesses Initiated by ADSC ADSC write accesses are initiated when the following conditions are satisfied: (1) ADSC is asserted LOW, (2) ADSP is deasserted HIGH, (3) chip select is asserted active, and (4) the appropriate combination of the write inputs (GW, BWE, and BW[A:D]) are asserted active to conduct a write to the desired byte(s). ADSC triggered write accesses require a single clock cycle to complete. The address presented is loaded into the address register and the address advancement logic while being delivered to the memory core. The ADV input is ignored during this cycle. If a global write is conducted, the data presented to the DQX is written into the corresponding address location in the memory core. If a byte write is conducted, only the selected bytes are written. 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. Because the CY7C1219F is a common I/O device, the Output Enable (OE) must be deasserted HIGH before presenting data to the DQX inputs. Doing so will three-state the output drivers. As a safety precaution, DQX are automatically three-stated Page 5 of 15 CY7C1219F whenever a write cycle is detected, regardless of the state of OE. Interleaved Burst Address Table (MODE = Floating or VDD) Burst Sequences The CY7C1219F provides a two-bit wraparound counter, fed by A[1:0], that implements either an interleaved or linear burst sequence. The interleaved burst sequence is designed specifically to support Intel Pentium applications. The linear burst sequence is designed to support processors that follow a linear burst sequence. The burst sequence is user selectable through the MODE input. Both read and write burst operations are supported. Asserting ADV LOW at clock rise will automatically increment the burst counter to the next address in the burst sequence. Both read and write burst operations are supported. 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 Linear Burst Address Table (MODE = GND) 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. CEs, ADSP, and ADSC 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 10 11 00 10 11 00 01 11 00 01 10 Truth Table [2, 3, 4, 5, 6] Operation Address Used CE1 CE3 CE2 ZZ ADSP ADSC ADV WRITE OE CLK DQ Deselected Cycle, Power-down None H X X L X L X X X L-H three-state Deselected Cycle, Power-down None L X L L L X X X X L-H three-state Deselected Cycle, Power-down None L H X L L X X X X L-H three-state Deselected Cycle, Power-down None L X L L H L X X X L-H three-state Deselected Cycle, Power-down None L H X L H L X X X L-H three-state ZZ Mode, Power-Down None X X X H X X X X X X three-state Read Cycle, Begin Burst External L L H L L X X X L L-H Q Read Cycle, Begin Burst External L L H L L X X X H L-H three-state Write Cycle, Begin Burst External L L H L H L X L X L-H D Read Cycle, Begin Burst External L L H L H L X H L L-H Q Read Cycle, Begin Burst External L L H L H L X H H L-H three-state Read Cycle, Continue Burst Next X X X L H H L H L L-H Q Read Cycle, Continue Burst Next X X X L H H L H H L-H three-state Notes: 2. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. 3. WRITE = L when any one or more Byte Write enable signals (BWA, BWB, BWC, BWD) and BWE = L or GW = L. WRITE = H when all Byte write enable signals (BWA, BWB, BWC, BWD), BWE, GW = H. 4. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock. 5. The SRAM always initiates a read cycle when ADSP is asserted, regardless of the state of GW, BWE, or BW[A:D]. Writes may occur only on subsequent clocks after the ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to allow the outputs to three-state. OE is a don't care for the remainder of the write cycle. 6. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle all data bits are three-state when OE is inactive or when the device is deselected, and all data bits behave as output when OE is active (LOW). Document #: 38-05416 Rev. *A Page 6 of 15 CY7C1219F Truth Table (continued)[2, 3, 4, 5, 6] Operation Address Used CE1 CE3 CE2 ZZ ADSP ADSC ADV WRITE OE CLK DQ Read Cycle, Continue Burst Next H X X L X H L H L L-H Q Read Cycle, Continue Burst Next H X X L X H L H H L-H three-state Write Cycle, Continue Burst Next X X X L H H L L X L-H D Write Cycle, Continue Burst Next H X X L X H L L X L-H D Read Cycle, Suspend Burst Current X X X L H H H H L L-H Q Read Cycle, Suspend Burst Current X X X L H H H H H L-H three-state Read Cycle, Suspend Burst Current H X X L X H H H L L-H Q Read Cycle, Suspend Burst Current H X X L X H H H H L-H three-state Write Cycle, Suspend Burst Current X X X L H H H L X L-H D Write Cycle, Suspend Burst Current H X X L X H H L X L-H D Truth Table for Read/Write[2, 3] Function GW BWE BWA BWB BWC BWD Read H H X X X X Read H L H H H H Write byte A- (DQA and DQPA) H L L H H H Write byte B- (DQBand DQPB) H L H L H H Write byte C- (DQCand DQPC) H L H H L H Write byte D- (DQDand DQPD) H L H H H L Write all bytes H L L L L L Write all bytes L X X X X X ZZ Mode Electrical Characteristics Parameter Description Test Conditions Min. Max. Unit IDDZZ Snooze mode standby current ZZ > VDD − 0.2V 40 mA tZZS Device operation to ZZ ZZ > VDD − 0.2V 2tCYC ns tZZREC ZZ recovery time ZZ < 0.2V tZZI ZZ Active to snooze current This parameter is sampled tRZZI ZZ inactive to exit snooze current This parameter is sampled Document #: 38-05416 Rev. *A 2tCYC ns 2tCYC 0 ns ns Page 7 of 15 CY7C1219F Maximum Ratings Current into Outputs (LOW)......................................... 20 mA Static Discharge Voltage........................................... > 2001V (Above which the useful life may be impaired. For user guidelines, not tested.) (per MIL-STD-883,Method 3015) Storage Temperature .................................... –65°C to +150° Latch -up Current.................................................... > 200 mA Ambient Temperature with Power Applied............................................. –55°C to +125°C Operating Range Supply Voltage on VDD Relative to GND........ –0.5V to +4.6V Range DC Voltage Applied to Outputs in three-state ........................................ –0.5V to VDDQ +0.5V Com’l Ambient Temperature (TA) VDD VDDQ 0°C to +70°C 3.3V −5%/+10% 3.3V −5% to VDD DC Input Voltage......................................–0.5V to VDD+0.5V Electrical Characteristics Over the Operating Range[7, 8] Parameter Description VDD Power Supply Voltage Test Conditions Min. Max. Unit 3.135 3.6 V 3.135 VDD VDDQ I/O Supply Voltage VOH Output HIGH Voltage VDDQ = 3.3V, VDD = Min., IOH = –4.0 mA VOL Output LOW Voltage VDDQ = 3.3V, VDD = Min., IOL = 8.0 mA 0.4 V VIH Input HIGH Voltage[7] VDDQ = 3.3V 2.0 VDD + 0.3V V VIL Input LOW Voltage[7] VDDQ = 3.3V –0.3 0.8 V IX Input Load Current except ZZ and MODE GND ≤ VI ≤ VDDQ –5 5 µA Input Current of MODE Input = VSS –30 5 µA 30 µA 2.4 µA Input = VDD Input Current of ZZ Input = VSS µA –5 Input = VDD GND ≤ VI ≤ VDDQ, Output Disabled 5 µA 6-ns cycle, 166 MHz 240 mA 7.5-ns cycle, 133 MHz 225 mA VDD = Max., Device Deselected, 6-ns cycle, 166 MHz VIN ≥ VIH or VIN ≤ VIL, f = fMAX = 7.5-ns cycle, 133 MHz 1/tCYC 100 mA 90 mA VDD = Max., Device Deselected, All speeds VIN ≤ 0.3V or VIN > VDDQ – 0.3V, f=0 40 mA Automatic CE Power-down Current—CMOS Inputs VDD = Max., Device Deselected, 6-ns cycle, 166 MHz or VIN ≤ 0.3V or VIN > VDDQ – 7.5-ns cycle, 133 MHz 0.3V, f = fMAX = 1/tCYC 85 mA 75 mA Automatic CE Power-down Current—TTL Inputs VDD = Max., Device Deselected, All speeds VIN ≥ VIH or VIN ≤ VIL, f = 0 45 mA IOZ Output Leakage Current IDD VDD Operating Supply Current VDD = Max., IOUT = 0 mA, f = fMAX = 1/tCYC ISB1 Automatic CE Power-down Current—TTL Inputs ISB2 Automatic CE Power-down Current—CMOS Inputs ISB3 ISB4 V V –5 Thermal Characteristics[9] Parameter Description ΘJA Thermal Resistance (Junction to Ambient) ΘJC Thermal Resistance (Junction to case) Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA/JESD51 TQFP Package Unit 41.83 °C/W 9.99 °C/W Notes: 7. Overshoot: VIH(AC) < VDD +1.5V (Pulse width less than tCYC/2), undershoot: VIL(AC)> –2V (Pulse width less than tCYC/2). 8. Power-up: Assumes a linear ramp from 0v to VDD(min.) within 200 ms. During this time VIH < VDD and VDDQ < VDD. Document #: 38-05416 Rev. *A Page 8 of 15 CY7C1219F Capacitance[9] Parameter Description CIN Input Capacitance CCLK Clock Input Capacitance CI/O Input/Output Capacitance Test Conditions Max. Unit 5 pF TA = 25°C, f = 1 MHz, VDD = 3.3V VDDQ = 3.3V 5 pF 5 pF AC Test Loads and Waveforms 3.3V I/O Test Load R = 317Ω 3.3V OUTPUT OUTPUT RL = 50Ω Z0 = 50Ω VT = 1.5V R = 351Ω ≤1ns ≤ 1ns (c) (b) Switching Characteristics Over the Operating Range [14, 15] 166 MHz Parameter tPOWER 90% 10% 90% 10% GND 5 pF INCLUDING JIG AND SCOPE (a) ALL INPUT PULSES VDDQ Description VDD(Typical) to the first Access[10] Min. Max. 133 MHz Min. Max. Unit 1 1 ms Clock tCYC Clock Cycle Time 6.0 7.5 ns tCH Clock HIGH 2.5 3.0 ns tCL Clock LOW 2.5 3.0 ns Output Times tCO Data Output Valid After CLK Rise tDOH Data Output Hold After CLK Rise tCLZ Clock to Low-Z[11, 12, 13] tCHZ [11, 12, 13] tOEV tOELZ tOEHZ Clock to High-Z OE LOW to Output Valid OE LOW to Output Low-Z[11, 12, 13] 3.5 4.0 ns 2.0 2.0 ns 0 0 ns 3.5 4.0 ns 3.5 4.5 ns 0 [11, 12, 13] 0 3.5 OE HIGH to Output High-Z ns 4.0 ns Set-up Times tAS Address Set-up Before CLK Rise 1.5 1.5 ns tADS ADSC, ADSP Set-up Before CLK Rise ADV Set-up Before CLK Rise GW, BWE, BW[A : D] Set-up Before CLK Rise 1.5 1.5 ns 1.5 1.5 ns 1.5 1.5 ns tADVS tWES Notes: 9. Tested initially and after any design or process change that may affect these parameters. 10. 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. 11. tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of AC Test Loads. Transition is measured ± 200 mV from steady-state voltage. 12. 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 High-Z prior to Low-Z under the same system conditions. 13. This parameter is sampled and not 100% tested. 14. Timing reference level is 1.5V when VDDQ = 3.3V. 15. Test conditions shown in (a) of AC Test Loads unless otherwise noted. Document #: 38-05416 Rev. *A Page 9 of 15 CY7C1219F Switching Characteristics Over the Operating Range (continued)[14, 15] 166 MHz Parameter Description Min. Max. 133 MHz Min. Max. Unit tDS Data Input Set-up Before CLK Rise 1.5 1.5 ns tCES Chip Enable Set-up Before CLK Rise 1.5 1.5 ns tAH Address Hold After CLK Rise 0.5 0.5 ns tADH 0.5 0.5 ns 0.5 0.5 ns tWEH ADSP , ADSC Hold After CLK Rise ADV Hold After CLK Rise GW,BWE, BW[A:D] Hold After CLK Rise 0.5 0.5 ns tDH Data Input Hold After CLK Rise 0.5 0.5 ns tCEH Chip Enable Hold After CLK Rise 0.5 0.5 ns Hold Times tADVH Switching Waveforms Read Timing[16] tCYC CLK tCH tADS tCL tADH ADSP tADS tADH ADSC tAS ADDRESS tAH A1 A2 tWES A3 Burst continued with new base address tWEH GW, BWE,BW [A:D] Deselect cycle tCES tCEH CE tADVS tADVH ADV ADV suspends burst OE t Data IOut (Q) High-Z CLZ t OEHZ Q(A1) tOEV tCO t OELZ tDOH Q(A2) t CHZ Q(A2 + 1) Q(A2 + 2) Q(A2 + 3) Q(A2) Q(A2 + 1) Q(A3) t CO Single READ BURST READ DON’T CARE Burst wraps around to its initial state UNDEFINED Note: 16. On this diagram, 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. Document #: 38-05416 Rev. *A Page 10 of 15 CY7C1219F Switching Waveforms (continued) Write Timing[16, 17] t CYC CLK tCH tADS tCL tADH ADSP tADS ADSC extends burst tADH tADS tADH ADSC tAS tAH A1 ADDRESS A2 A3 Byte write signals are ignored for first cycle when ADSP initiates burst tWES tWEH BWE, BW[A:D] tWES tWEH GW tCES tCEH CE tADVS tADVH ADV ADV suspends burst OE t DS Data in (D) High-Z t OEHZ t DH D(A1) D(A2) D(A2 + 1) D(A2 + 1) D(A2 + 2) D(A2 + 3) D(A3) D(A3 + 1) D(A3 + 2) Data Out (Q) BURST READ Single WRITE BURST WRITE DON’T CARE Extended BURST WRITE UNDEFINED Note: 17. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BW[A:D] LOW. Document #: 38-05416 Rev. *A Page 11 of 15 CY7C1219F Switching Waveforms (continued) Read/Write Timing[16, 18] tCYC CLK tCL tCH tADS tADH tAS tAH ADSP ADSC ADDRESS A1 A2 A3 A4 A5 A6 D(A5) D(A6) tWES tWEH BWE, BW[A:D] tCES tCEH CE ADV OE tDS tCO Data In (D) tOELZ High-Z tCLZ Data Out (Q) tDH High-Z Q(A1) Back-to-Back READs tOEHZ D(A3) Q(A2) Q(A4) Single WRITE DON’T CARE Q(A4+1) Q(A4+2) Q(A4+3) BURST READ Back-to-Back WRITEs UNDEFINED Note: 18. The data bus (Q) remains in High-Z following a WRITE cycle, unless a new read access initiated by ADSP or ADSP .GW is HIGH. Document #: 38-05416 Rev. *A Page 12 of 15 CY7C1219F Switching Waveforms (continued) ZZ Mode Timing [19, 20] CLK t ZZ ZZ I t ZZREC t ZZI SUPPLY I DDZZ t RZZI ALL INPUTS (except ZZ) DESELECT or READ Only Outputs (Q) High-Z DON’T CARE Ordering Information Speed (MHz) 133 Ordering Code CY7C1219F-133AC Package Name Package Type Operating Range A101 100-Lead 14 x 20 x 1.4 mm Thin Quad Flat Pack Commercial Please contact your local Cypress sales representative for availability of 166MHz speed grade option. Notes: 19. Device must be deselected when entering ZZ mode. See truth table for all possible signal conditions to deselect the device. 20. DQs are in High-Z when exiting ZZ sleep mode. Document #: 38-05416 Rev. *A Page 13 of 15 CY7C1219F Package Diagram 100-pin Thin Plastic Quad Flatpack (14 x 20 x 1.4 mm) A101 51-85050-*A Intel and Pentium are registered trademarks, and i486 is a trademark, of Intel Corporation. PowerPC is a registered trademark of IBM. All product and company names mentioned in this document are the trademarks of their respective holders. Document #: 38-05416 Rev. *A Page 14 of 15 CY7C1219F Document History Page Document Title: CY7C1219F 32K x 36 Pipelined DCD Sync SRAM Document Number: 38-05416 Issue Date Orig. of Change 130279 01/19/04 NJY New Data Sheet 213321 See ECN VBL Shade selection guide and characteristics table for non-active part number REV. ECN NO. ** *A Document #: 38-05416 Rev. *A Description of Change Page 15 of 15 © Cypress Semiconductor Corporation, 2004. 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 Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor 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 Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.