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CY7C09279 Datasheet, PDF (1/18 Pages) Cypress Semiconductor – 32K/64K X 16/18 Synchronous Dual Port Static RAM | |||
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25/0251
CY7C09279/89
CY7C09379/89
32K/64K x16/18
Synchronous Dual Port Static RAM
Features
⢠True dual-ported memory cells which allow simulta-
neous access of the same memory location
⢠Six Flow-Through/Pipelined devices
â 32K x 16/18 organization (CY7C09279/379)
â 64K x 16/18 organization (CY7C09289/389)
⢠Three Modes
â Flow-Through
â Pipelined
â Burst
⢠Pipelined output mode on both ports allows fast 100-
MHz 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
â Active = 195 mA (typical)
â Standby = 0.05 mA (typical)
⢠Fully synchronous interface for easier operation
⢠Burst counters increment addresses internally
â Shorten cycle times
â Minimize bus noise
â Supported in Flow-Through and Pipelined modes
⢠Dual Chip Enables for easy depth expansion
⢠Upper and Lower Byte Controls for Bus Matching
⢠Automatic power-down
⢠Commercial and Industrial temperature ranges
⢠Available in 100-pin TQFP
⢠Pin-compatible and functionally equivalent to IDT70927
and IDT709279
Logic Block Diagram
R/WL
UBL
R/WR
UBR
CE0L
1
CE1L
0
LBL
0/1
OEL
1
CE0R
0
CE1R
0/1
LBR
OER
FT/PipeL
[2]
I/O8/9LâI/O15/17L
1b 0b 1a 0a
0/1 b
a
8/9
[3]
I/O0LâI/O7/8L
[4]
A0LâA14/15L
CLKL
ADSL
CNTENL
CNTRSTL
8/9
15/16
Counter/
Address
Register
Decode
I/O
Control
I/O
Control
True Dual-Ported
RAM Array
0a 1a 0b 1b
a
b 0/1
8/9
FT/PipeR
[2]
I/O8/9RâI/O15/17R
Counter/
Address
Register
Decode
8/9
15/16
[3]
I/O0RâI/O7/8R
[4]
A0RâA14/15R
CLKR
ADSR
CNTENR
CNTRSTR
Notes:
1. See page 6 for Load Conditions.
2. I/O8âI/O15 for x16 devices; I/O9âI/O17 for x18 devices.
3. I/O0âI/O7 for x16 devices. I/O0âI/O8 for x18 devices.
4. A0âA14 for 32K; A0âA15 for 64K 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
Document #: 38-06040 Rev. **
Revised September 19, 2001
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