CY7C008 CYPRESS [Cypress Semiconductor], CY7C008 Datasheet - Page 9

• Manufacturer Part Number: CY7C008
• Description: 64K/128K x 8/9 Dual-Port Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Switching Waveforms
Document #: 38-06041 Rev. *C
Read Cycle No. 3 (Either Port)
Read Cycle No. 2 (Either Port CE/OE Access)
Read Cycle No. 1 (Either Port Address Access)
CURRENT
Notes:
DATA OUT
22. R/W is HIGH for read cycles.
23. Device is continuously selected CE = V
24. OE = V
25. Address valid prior to or coincident with CE transition LOW.
26. To access RAM, CE = V
ADDRESS
DATA OUT
ADDRESS
DATA OUT
CE
IL
I
OE
I
CE
CC
SB
.
PREVIOUS DATA VALID
IL
, SEM = V
t
OHA
[22, 24, 25, 26]
IH
. To access semaphore, CE = V
IL
. This waveform cannot be used for semaphore reads.
t
AA
t
PU
t
AA
t
t
LZCE
LZCE
t
LZCE
[22, 25, 26]
t
t
ACE
ABE
[22, 23, 24]
t
LZOE
t
t
RC
IH
ACE
, SEM = V
t
RC
t
DOE
IL
.
DATA VALID
DATA VALID
t
OHA
t
t
t
OHA
HZCE
PD
t
t
HZOE
HZCE
CY7C008/009
CY7C018/019
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