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1
PRELIMINARY
CY7C09079A/89/99 CY7C09179A/89/99
32K/64K/128K x 8/9 Synchronous Dual-Port Static RAM
Features
* True dual-ported memory cells which allow simultaneous access of the same memory location * Six Flow-Through/Pipelined devices -- 32K x 8/9 organizations (CY7C09079A/179A) -- 64K x 8/9 organizations (CY7C09089/189) -- 128K x 8/9 organizations (CY7C09099/199) * Three Modes -- Flow-Through -- Pipelined -- Burst * Pipelined output mode on both ports allows fast 100MHz cycle time * 0.35-micron CMOS for optimum speed/power * High-speed clock to data access 6.5[1]/7.5/9/12 ns (max.) * Low operating power -- Active = 195 mA (typical) -- Standby = 0.05 mA (typical) * Fully synchronous interface for easier operation * Burst counters increment addresses internally -- Shorten cycle times -- Minimize bus noise * * * * * -- Supported in Flow-Through and Pipelined modes Dual Chip Enables for easy depth expansion Automatic power-down Commercial and Industrial temperature ranges Available in 100-pin TQFP Pin-compatible and functionally equivalent to IDT709079, IDT70908, and IDT709089
Logic Block Diagram
R/WL OEL R/WR OER
CE0L CE1L
1
0/1
1
0/1
0
0
CE0R CE1R
1
0
0
1
0/1
FT/PipeL
[2]
0/1
FT/PipeR
[2]
8/9
8/9
I/O 0L-I/O 7/8L I/O Control
[3]
I/O0R-I/O 7/8R I/O Control
15/16/17
[3]
15/16/17
A0-A14/15/16L CLK L ADSL CNTEN L CNTRST L
Counter/ Address Register Decode
True Dual-Ported RAM Array
Counter/ Address Register Decode
A0-A14/15/16R CLKR ADSR CNTENR CNTRSTR
Notes: 1. See page 7 for Load Conditions. 2. I/O0-I/O7 for x8 devices; I/O0-I/O8 for x9 devices. 3. A0-A14 for 32K; A0-A15 for 64K; and A0-A16 for 128K devices.
For the most recent information, visit the Cypress web site at www.cypress.com Cypress Semiconductor Corporation * 3901 North First Street * San Jose * CA 95134 * 408-943-2600 November 29, 1999
PRELIMINARY
Functional Description
The CY7C09079A/89/99 and CY7C09179A/89/99 are highspeed synchronous CMOS 32K, 64K, and 128K x 8/9 dualport static RAMs. Two ports are provided, permitting independent, simultaneous access for reads and writes to any location in memory.[4] Registers on control, address, and data lines allow for minimal set-up and hold times. In pipelined output mode, data is registered for decreased cycle time. Clock to data valid tCD2 = 6.5 ns[1] (pipelined). Flow-through mode can also be used to bypass the pipelined output register to eliminate access latency. In flow-through mode data will be available tCD1 = 15 ns after the address is clocked into the device. Pipelined output or flow-through mode is selected via the FT/Pipe pin. Each port contains a burst counter on the input address register. The internal write pulse width is independent of the LOWto-HIGH transition of the clock signal. The internal write pulse is self-timed to allow the shortest possible cycle times.
CY7C09079A/89/99 CY7C09179A/89/99
A HIGH on CE0 or LOW on CE1 for one clock cycle will power down the internal circuitry to reduce the static power consumption. The use of multiple Chip Enables allows easier banking of multiple chips for depth expansion configurations. In the pipelined mode, one cycle is required with CE0 LOW and CE1 HIGH to reactivate the outputs. Counter enable inputs are provided to stall the operation of the address input and utilize the internal address generated by the internal counter for fast interleaved memory applications. A port's burst counter is loaded with the port's Address Strobe (ADS). When the port's Count Enable (CNTEN) is asserted, the address counter will increment on each LOW-to-HIGH transition of that port's clock signal. This will read/write one word from/into each successive address location until CNTEN is deasserted. The counter can address the entire memory array and will loop back to the start. Counter Reset (CNTRST) is used to reset the burst counter. All parts are available in 100-pin Thin Quad Plastic Flatpack (TQFP) packages.
Note: 4. When writing simultaneously to the same location, the final value cannot be guaranteed.
2
PRELIMINARY
Pin Configurations
100-Pin TQFP (Top View)
CNTENR CNTENL ADSR CLKR ADSL CLKL GND
CY7C09079A/89/99 CY7C09179A/89/99
A0R
A1R
A2R
A3R
A4R
A5R
A6R
A6L
A5L
A4L
A3L
A2L
A1L
A0L
NC
NC
NC
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 NC NC A7L A8L A9L A10L A11L A12L A13L A14L [5] A15L [6] A16L VCC NC NC NC NC CE0L CE1L CNTRSTL R/WL OEL [7] FT/PIPEL NC NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 75 74 73 72 71 70 69 68 67 66 NC NC A7R A8R A9R A10R A11R A12R A13R A14R [5] A15R [6] A16R GND NC NC NC NC CE0R CE1R CNTRSTR R/WR OER FT/PIPER GND NC [7]
CY7C09099 (128K x 8) CY7C09089 (64K x 8) CY7C09079A (32K x 8)
NC 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 NC
I/O0R
I/01R
I/O2R
I/O3R
I/O4R
I/O5R
I/O6R
I/O7R
VCC
GND
GND
GND
VCC
NC
NC
I/O7L
I/O6L
I/O5L
I/O4L
I/O3L
I/O2L
I/O1L
Notes: 5. This pin is NC for CY7C09079A. 6. This pin is NC for CY7C09079A and CY7C09089. 7. For CY7C09079A and CY7C09089, pin #23 connected to VCC is equivalent to an IDT x8 pipelined device; connecting pin #23 and #53 to GND is equivalent to an IDT x8 flow-through device.
I/O0L
3
NC
PRELIMINARY
Pin Configurations (continued)
100-Pin TQFP (Top View)
CNTENR CNTENL ADSR CLKR ADSL CLKL
CY7C09079A/89/99 CY7C09179A/89/99
GND
GND
A0R
A1R
A2R
A3R
A4R
A5R
A6R
A6L
A5L
A4L
A3L
A2L
A1L
A0L
NC
NC
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 NC NC A7L A8L A9L A10L A11L A12L A13L A14L [8]A15L [9]A16L VCC NC NC NC NC CE0L CE1L CNTRSTL R/WL OEL FT/PIPEL NC NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 75 74 73 72 71 70 69 68 67 66 NC NC A7R A8R A9R A10R A11R A12R A13R A14R A15R[8] A16R [9] GND NC NC NC NC CE0R CE1R CNTRSTR R/WR OER FT/PIPER GND NC
CY7C09199 (128K x 9) CY7C09189 (64K x 9) CY7C09179A (32K x 9)
NC 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 NC
I/O0R
I/01R
I/O2R
I/O3R
I/O4R
I/O5R
I/O6R
I/O7R
I/O8R
VCC
GND
GND
GND
VCC
I/O8L
I/O7L
I/O6L
I/O5L
I/O4L
I/O3L
I/O2L
I/O1L
Selection Guide
CY7C09079A/89/9 9 CY7C09179A/89/9 9 -6[1] fMAX2 (MHz) (Pipelined) Max Access Time (ns) (Clock to Data, Pipelined) Typical Operating Current ICC (mA) Typical Standby Current for ISB1 (mA) (Both ports TTL Level) Typical Standby Current for ISB3 (mA) (Both ports CMOS Level)
Notes: 8. This pin is NC for CY7C09179A. 9. This pin is NC for CY7C09179A and CY7C09189.
I/O0L
NC
CY7C09079A/89/9 9 CY7C09179A/89/9 9 -7 83 7.5 235 40 0.05
CY7C09079A/89/9 9 CY7C09179A/89/9 9 -9 67 9 215 35 0.05
CY7C09079A/89/9 9 CY7C09179A/89/9 9 -12 50 12 195 30 0.05
100 6.5 250 45 0.05
4
PRELIMINARY
Pin Definitions
Left Port A0L-A16L ADSL Right Port A0R-A16R ADSR Description
CY7C09079A/89/99 CY7C09179A/89/99
Address Inputs (A0-A14 for 32K; A 0-A15 for 64K; and A0-A16 for 128K devices). Address Strobe Input. Used as an address qualifier. This signal should be asserted LOW to access the part using an externally supplied address. Asserting this signal LOW also loads the burst counter with the address present on the address pins. Chip Enable Input. To select either the left or right port, both CE0 AND CE1 must be asserted to their active states (CE0 VIL and CE1 VIH). Clock Signal. This input can be free running or strobed. Maximum clock input rate is fMAX. Counter Enable Input. Asserting this signal LOW increments the burst address counter of its respective port on each rising edge of CLK. CNTEN is disabled if ADS or CNTRST are asserted LOW. Counter Reset Input. Asserting this signal LOW resets the burst address counter of its respective port to zero. CNTRST is not disabled by asserting ADS or CNTEN. Data Bus Input/Output (I/O0-I/O7 for x8 devices; I/O0-I/O8 for x9 devices). Output Enable Input. This signal must be asserted LOW to enable the I/O data pins during read operations. Read/Write Enable Input. This signal is asserted LOW to write to the dual port memory array. For read operations, assert this pin HIGH. Flow-Through/Pipelined Select Input. For flow-through mode operation, assert this pin LOW. For pipelined mode operation, assert this pin HIGH. Ground Input. No Connect. Power Input. Output Current into Outputs (LOW)............................. 20 mA Static Discharge Voltage ........................................... >2001V Latch-Up Current ...................................................... >200mA
CE0L,CE1L CLKL CNTENL
CE0R,CE1R CLKR CNTENR
CNTRSTL I/O0L-I/O 8L OEL R/WL FT/PIPEL GND NC VCC
CNTRSTR I/O0R-I/O8R OER R/WR FT/PIPE R
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................. -65C to +150C Ambient Temperature with Power Applied ..-55C to +125C Supply Voltage to Ground Potential ............... -0.3V to +7.0V DC Voltage Applied to Outputs in High Z State ................................. -0.5V to +7.0V DC Input Voltage............................................ -0.5V to +7.0V
Note: 10. Industrial parts are available in CY7C09099 and CY7C09199 only.
Operating Range
Range Commercial Industrial[10] Ambient Temperature 0C to +70C -40C to +85C VCC 5V 10% 5V 10%
5
PRELIMINARY
Electrical Characteristics Over the Operating Range
CY7C09079A/89/99 CY7C09179A/89/99 -6[1] Parameter VOH VOL VIH VIL IOZ ICC Description Output HIGH Voltage (VCC = Min., IOH = -4.0 mA) Output LOW Voltage (VCC = Min., IOH = +4.0 mA) Input HIGH Voltage Input LOW Voltage Output Leakage Current Com'l. Operating Current (VCC = Max., Ind.[10] IOUT = 0 mA) Outputs Disabled Standby Current (Both Com'l. Ports TTL Level)[11] Ind.[10] CEL & CER VIH, f = fMAX Standby Current (One Com'l. Port TTL Level)[11] Ind.[10] CEL | CER VIH, f = fMAX Standby Current (Both Com'l. Ports CMOS Level)[11] Ind.[10] CEL & CER VCC - 0.2V, f = 0 Standby Current (One Com'l. Port CMOS Level)[11] Ind.[10] CEL | CER VIH, f = fMAX -10 250 2.2 0.8 10 450 -10 235 2.4 0.4 2.2 0.8 10 420 -10 2.4 0.4 2.2 -7 2.4 -9
CY7C09079A/89/99 CY7C09179A/89/99
-12 2.4 0.4 2.2 0.8 10 -10 195 0.8 10 305 0.4 V V V V A mA mA 30 85 mA mA 125 190 mA mA 0.05 0.5 mA mA 110 150 mA mA
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit
210 245
350 410 95 110 205 220 0.5 0.5 170 185
ISB1
45
115
40
105
35 50
ISB2
175
235
160
220
140 160
ISB3
0.05
0.5
0.05
0.5
.05 0.05
ISB4
160
200
145
185
130 145
Capacitance
Parameter CIN Description Input Capacitance Test Conditions TA = 25C, f = 1 MHz, VCC = 5.0V Max. 10 Unit pF
COUT Output Capacitance 10 pF Note: 11. CEL and CER are internal signals. To select either the left or right port, both CE0 AND CE1 must be asserted to their active states (CE0 VIL and CE1 VIH).
6
PRELIMINARY
AC Test Loads
5V
CY7C09079A/89/99 CY7C09179A/89/99
5V R1 = 893 OUTPUT C = 30 pF R2 = 347 VTH = 1.4V OUTPUT C = 30 pF RTH = 250 R1 = 893 OUTPUT C = 5 pF R2 = 347
(a) Normal Load (Load 1)
(b) Thevenin Equivalent (Load 1)
(c) Three-State Delay (Load 2) (Used for tCKLZ, tOLZ, & tOHZ including scope and jig)
AC Test Loads (Applicable to -6 only)[12]
OUTPUT
Z0 = 50 C
R = 50 3.0V GND VTH = 1.4V 10% 3 ns
ALL INPUT PULSES
90% 90% 10% 3 ns
(a) Load 1 (-6 only)
0. 60
0. 50
(ns) for all -6 access times
0. 40
0. 30
0. 20
0. 1 0
0. 00 10 15 20 25 30 35
Capacitance (pF)
(b) Load Derating Curve
Note: 12. Test Conditions: C = 10 pF.
7
PRELIMINARY
Switching Characteristics Over the Operating Range
CY7C09079A/89/99 CY7C09179A/89/99
CY7C09079A/89/99 CY7C09179A/89/99 -6[1] Parameter fMAX1 fMAX2 tCYC1 tCYC2 tCH1 tCL1 tCH2 tCL2 tR tF tSA tHA tSC tHC tSW tHW tSD tHD tSAD tHAD tSCN tHCN tSRST tHRST tOE tOLZ[13, 14] tOHZ[13, 14] tCD1 tCD2 tDC tCKHZ tCKLZ
[13, 14] [13, 14]
-7 Min. Max. 45 83 22 12 7.5 7.5 5 5 3 3 3 3 4 0 4 0 4 0 4 0 4 0 4 0 4 0 8 9 2 7 15 6.5 1 7 18 7.5 2 9 2 2 9 2 2 2 2 1 4 1 4 1 4 1 4 1 4 1 4 1 4 1 25 15 12 12 6 6 Min. 53
-9 Max. 40 67 30 20 12 12 8 8 3 3 4 1 4 1 4 1 4 1 4 1 4 1 4 1 10 2 7 20 9 2 9 2 2 1
-12 Min. Max. 33 50 Unit MHz MHz ns ns ns ns ns ns 3 3 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 12 7 25 12 9 ns ns ns ns ns ns ns ns
Description fMax Flow-Through fMax Pipelined Clock Cycle Time - Flow-Through Clock Cycle Time - Pipelined Clock HIGH Time - Flow-Through Clock LOW Time - Flow-Through Clock HIGH Time - Pipelined Clock LOW Time - Pipelined Clock Rise Time Clock Fall Time Address Set-Up Time Address Hold Time Chip Enable Set-Up Time Chip Enable Hold Time R/W Set-Up Time R/W Hold Time Input Data Set-Up Time Input Data Hold Time ADS Set-Up Time ADS Hold Time CNTEN Set-Up Time CNTEN Hold Time CNTRST Set-Up Time CNTRST Hold Time Output Enable to Data Valid OE to Low Z OE to High Z Clock to Data Valid - Flow-Through Clock to Data Valid - Pipelined Data Output Hold After Clock HIGH Clock HIGH to Output High Z Clock HIGH to Output Low Z
Min.
Max. 100
19 10 6.5 6.5 4 4
3.5 0 3.5 0 3.5 0 3.5 0 3.5 0 3.5 0 3.5 0 2 1
2 2 2
Port to Port Delays tCWDD tCCS Write Port Clock HIGH to Read Data Delay Clock to Clock Set-Up Time 30 9 35 10 40 15 40 15 ns ns
Notes: 13. Test conditions used are Load 2. 14. This parameter is guaranteed by design, but is not production tested.
8
PRELIMINARY
Switching Waveforms
Read Cycle for Flow-Through Output (FT/PIPE = V IL)[15, 16, 17, 18]
tCH1 CLK tCYC1 tCL1
CY7C09079A/89/99 CY7C09179A/89/99
CE0 tSC CE1 tHC tSC tHC
R/W tSW tSA ADDRESS DATAOUT tCKLZ tOHZ OE tOE tOLZ An tCD1 tHW tHA An+1 tDC Qn Qn+1 An+2 An+3 tCKHZ Qn+2 tDC
Read Cycle for Pipelined Operation (FT/PIPE = VIH)[15, 16, 17, 18]
tCH2 CLK tCYC2 tCL2
CE0 tSC CE1 tHC tSC tHC
R/W tSW tSA ADDRESS DATAOUT An 1 Latency tHW tHA An+1 tCD2 Qn tCKLZ OE
tOE Notes: 15. OE is asynchronously controlled; all other inputs are synchronous to the rising clock edge. 16. ADS = VIL, CNTEN and CNTRST = VIH. 17. The output is disabled (high-impedance state) by CE0=VIH or CE1 = VIL following the next rising edge of the clock. 18. Addresses do not have to be accessed sequentially since ADS = VIL constantly loads the address on the rising edge of the CLK. Numbers are for reference only.
An+2 tDC Qn+1 tOHZ
An+3
Qn+2 tOLZ
9
PRELIMINARY
Switching Waveforms (continued)
Bank Select Pipelined Read[19, 20]
tCYC2
CY7C09079A/89/99 CY7C09179A/89/99
tCH2 CLKL tSA ADDRESS(B1) tSC CE0(B1) A0
tCL2
tHA A1 tHC A2 A3 A4 A5
tCD2 DATAOUT(B1) tSA ADDRESS(B2) A0 tHA A1 tSC CE0(B2) tSC DATAOUT(B2) tHC
tSC D0
tHC
tCD2 D1
tCKHZ
tCD2 D3
tCKHZ
tDC A2 tHC
tDC A3 A4
tCKLZ A5
tCD2 D2 tCKLZ
tCKHZ
tCD2 D4 tCKLZ
Left Port Write to Flow-Through Right Port Read[21, 22, 23, 24]
CLKL tSW R/WL tSA ADDRESSL tSD DATAINL CLKR R/WR ADDRESSR tSW tSA tHW tHA NO MATCH tCWDD DATAOUTR tDC VALID tDC tCD1 VALID VALID tCCS tCD1 MATCH tHD tHA NO MATCH tHW
MATCH
Notes: 19. In this depth expansion example, B1 represents Bank #1 and B2 is Bank #2; Each Bank consists of one Cypress dual-port device from this data sheet. ADDRESS(B1) = ADDRESS(B2). 20. OE and ADS = VIL ; CE1(B1), CE1(B2), R/W, CNTEN, and CNTRST = VIH. 21. The same waveforms apply for a right port write to flow-through left port read. 22. CE0 and ADS = VIL; CE1, CNTEN, and CNTRST = VIH. 23. OE = VIL for the right port, which is being read from. OE = VIH for the left port, which is being written to. 24. It t CCS maximum specified, then data from right port READ is not valid until the maximum specified for tCWDD. If tCCS>maximum specified, then data is not valid until tCCS + tCD1. t CWDD does not apply in this case.
10
PRELIMINARY
Switching Waveforms (continued)
Pipelined Read-to-Write-to-Read (OE = VIL)[18, 25, 26, 27]
tCH2 CLK tCYC2 tCL2
CY7C09079A/89/99 CY7C09179A/89/99
CE0 tSC CE1 tSW R/W tSW ADDRESS tSA DATAIN An tHA tCD2 Qn READ NO OPERATION WRITE READ tCKHZ tHW An+1 An+2 An+2 tSD tHD Dn+2 tCKLZ tCD2 Qn+3 An+3 An+4 tHW tHC
DATAOUT
Pipelined Read-to-Write-to-Read (OE Controlled)[18, 25, 26, 27]
tCH2 CLK tCYC2 tCL2
CE0
tSC
tHC
CE1
tSW tHW
R/W
tSW An
tHW An+1 tHA An+2 tSD tHD Dn+2 tCD2 Dn+3 tCKLZ Qn tOHZ tCD2 Qn+4 An+3 An+4 An+5
ADDRESS tSA DATAIN
DATAOUT
OE READ WRITE READ
Notes: 25. Output state (HIGH, LOW, or High-Impedance) is determined by the previous cycle control signals. 26. CE0 and ADS = VIL; CE1, CNTEN, and CNTRST = VIH. 27. During "No operation," data in memory at the selected address may be corrupted and should be rewritten to ensure data integrity.
11
PRELIMINARY
Switching Waveforms (continued)
Flow-Through Read-to-Write-to-Read (OE = VIL)[16, 19, 25, 26]
tCH1 CLK tCYC1 tCL1
CY7C09079A/89/99 CY7C09179A/89/99
CE0 tSC CE1 tSW R/W tSW ADDRESS tSA DATAIN tCD1 Qn tDC READ An tHA tCD1 Qn+1 tCKHZ NO OPERATION tCKLZ WRITE tHW An+1 An+2 tSD Dn+2 tCD1 Qn+3 tDC READ tCD1 An+2 tHD An+3 An+4 tHW tHC
DATAOUT
Flow-Through Read-to-Write-to-Read (OE Controlled)[16, 19, 25, 26]
tCYC1 tCL1
tCH1 CLK
CE0 tSC CE1 tSW R/W tSW An ADDRESS tSA DATAIN tCD1 Qn tOHZ tCKLZ tHA tDC tSD Dn+2 tHD Dn+3 tOE tCD1 Qn+4 tDC tCD1 tHW An+1 An+2 An+3 An+4 An+5 tHW tHC
DATAOUT OE
READ
WRITE
READ
12
PRELIMINARY
Switching Waveforms (continued)
Pipelined Read with Address Counter Advance[28]
tCYC2 tCL2
CY7C09079A/89/99 CY7C09179A/89/99
tCH2 CLK tSA ADDRESS tSAD ADS An
tHA
tHAD
tSAD CNTEN tSCN DATAOUT Qx-1 READ EXTERNAL ADDRESS tHCN Qx tDC READ WITH COUNTER tCD2 Qn tSCN Qn+1
tHAD
tHCN Qn+2 Qn+3
COUNTER HOLD
READ WITH COUNTER
Flow-Through Read with Address Counter Advance[28]
tCYC1 tCL1
tCH1 CLK tSA ADDRESS tSAD ADS An
tHA
tHAD tSAD tHAD
CNTEN tSCN tHCN tCD1 Qx tDC READ EXTERNAL ADDRESS Qn Qn+1 tSCN tHCN
DATAOUT
Qn+2 READ WITH COUNTER
Qn+3
READ WITH COUNTER
COUNTER HOLD
Note: 28. CE0 and OE = VIL; CE1, R/W and CNTRST = VIH.
13
PRELIMINARY
Switching Waveforms (continued)
Write with Address Counter Advance (Flow-Through or Pipelined Outputs)[29, 30]
tCH2 CLK tSA ADDRESS An tHA tCYC2 tCL2
CY7C09079A/89/99 CY7C09179A/89/99
INTERNAL ADDRESS tSAD ADS tHAD
An
An+1
An+2
An+3
An+4
CNTEN tSCN DATAIN tSD Dn tHD WRITE EXTERNAL ADDRESS tHCN Dn+1 WRITE WITH COUNTER Dn+1 Dn+2 Dn+3 Dn+4
WRITE COUNTER HOLD
WRITE WITH COUNTER
Notes: 29. CE0 and R/W = VIL ; CE1 and CNTRST = VIH. 30. The "Internal Address" is equal to the "External Address" when ADS = VIL and equals the counter output when ADS = VIH.
14
PRELIMINARY
Switching Waveforms (continued)
Counter Reset (Pipelined Outputs)[18, 25, 31, 32]
tCYC2 tCL2
CY7C09079A/89/99 CY7C09179A/89/99
tCH2 CLK
tSA ADDRESS INTERNAL ADDRESS AX tSW tHW 0 1 An
tHA An+1 An An+1
R/W tSAD ADS tSCN CNTEN tSRST CNTRST DATAIN tHRST tSD D0 Q0 COUNTER RESET WRITE ADDRESS 0 READ ADDRESS 0 READ ADDRESS 1 Q1 READ ADDRESS n Qn tHD tHCN tHAD
DATAOUT
Notes: 31. CE0 = VIL; CE1 = VIH. 32. No dead cycle exists during counter reset. A READ or WRITE cycle may be coincidental with the counter reset.
15
PRELIMINARY
Read/Write and Enable Operation[33, 34, 35]
Inputs OE X X X L H X CLK CE0 H X L L L CE1 X L H H H R/W X X L H X Outputs I/O0-I/O8 High-Z High-Z DIN DOUT High-Z
CY7C09079A/89/99 CY7C09179A/89/99
Operation Deselected[36] Deselected[36] Write Read[33] Outputs Disabled
Address Counter Control Operation[33, 37, 38, 39]
Address X An X X Previous Address X X An An CLK ADS X L H H CNTEN X X H L CNTRST L H H H I/O Dout(0) Dout(n) Dout(n) Dout(n+1) Mode Reset Load Hold Increment Operation Counter Reset to Address 0 Address Load into Counter External Address Blocked--Counter Disabled Counter Enabled--Internal Address Generation
Notes: 33. "X" = "don't care," "H" = VIH, "L" = VIL. 34. ADS, CNTEN, CNTRST = "don't care." 35. OE is an asynchronous input signal. 36. When CE changes state in the pipelined mode, deselection and read happen in the following clock cycle. 37. CE0 and OE = VIL; CE1 and R/W = VIH. 38. Data shown for flow-through mode; pipelined mode output will be delayed by one cycle. 39. Counter operation is independent of CE0 and CE1.
16
PRELIMINARY
Ordering Information
32K x8 Synchronous Dual-Port SRAM Speed (ns) 6.5[1] 7.5 9 12 Ordering Code CY7C09079A-6AC CY7C09079A-7AC CY7C09079A-9AC CY7C09079A-12AC Package Name A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack
CY7C09079A/89/99 CY7C09179A/89/99
Operating Range Commercial Commercial Commercial Commercial
64K x8 Synchronous Dual-Port SRAM Speed (ns) 6.5[1] 7.5 9 12 Ordering Code CY7C09089-6AC CY7C09089-7AC CY7C09089-9AC CY7C09089-12AC Package Name A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack Operating Range Commercial Commercial Commercial Commercial
128K x8 Synchronous Dual-Port SRAM Speed (ns) 6.5 7.5 9 12 Ordering Code CY7C09099-6AC CY7C09099-7AC CY7C09099-9AC CY7C09099-9AI CY7C09099-12AC Package Name A100 A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack Operating Range Commercial Commercial Commercial Industrial Commercial
32K x9 Synchronous Dual-Port SRAM Speed (ns) 6.5 7.5 9 12 Ordering Code CY7C09179A-6AC CY7C09179A-7AC CY7C09179A-9AC CY7C09179A-12AC Package Name A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack Operating Range Commercial Commercial Commercial Commercial
64K x9 Synchronous Dual-Port SRAM Speed (ns) 6.5 7.5 9 12 Ordering Code CY7C09189-6AC CY7C09189-7AC CY7C09189-9AC CY7C09189-12AC Package Name A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack Operating Range Commercial Commercial Commercial Commercial
17
PRELIMINARY
Ordering Information (continued)
128K x9 Synchronous Dual-Port SRAM Speed (ns) 6.5 7.5 9 12 Ordering Code CY7C09199-6AC CY7C09199-7AC CY7C09199-9AC CY7C09199-9AI CY7C09199-12AC Document #: 38-00835 Package Name A100 A100 A100 A100 A100 Package Type 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack 100-Pin Thin Quad Flat Pack
CY7C09079A/89/99 CY7C09179A/89/99
Operating Range Commercial Commercial Commercial Industrial Commercial
Package Diagram
100-Pin Thin Plastic Quad Flat Pack (TQFP) A100
51-85048-B
(c) Cypress Semiconductor Corporation, 1999. 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.

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