CY7C138-15JXC Cypress Semiconductor Corp, CY7C138-15JXC Datasheet - Page 8

• Manufacturer Part Number: CY7C138-15JXC
• Description: IC SRAM 32KBIT 15NS 68PLCC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C138-15JXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 32K (4K x 8)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 68-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06037 Rev. *B
Switching Waveforms
Write Cycle No. 2: R/W Three-States Data I/Os (Either Port)
Semaphore Read After Write Timing, Either Side
Notes:
25. Data I/O pins enter high impedance when OE is held LOW during write.
26. CE = HIGH for the duration of the above timing (both write and read cycle).
SEM OR CE
DATA OUT
ADDRESS
DATA IN
A
0
SEM
–A
R/W
R/W
I/O
OE
2
0
t
SA
(continued)
VALID ADDRESS
t
AW
t
SA
WRITE CYCLE
t
t
PWE
SCE
t
SD
DATA
t
IN
HA
VALID
t
[26]
t
SCE
HD
t
AW
t
HZWE
t
WC
t
SWRD
[22, 24, 25]
t
PWE
t
SOP
t
SOP
READ CYCLE
t
t
SD
AA
VALID ADDRESS
HIGH IMPEDANCE
DATA VALID
t
ACE
t
DOE
t
HD
t
LZWE
DATA
t
HA
OUT
VALID
t
OHA
CY7C138
CY7C139
Page 8 of 16
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