CY7C025AV-25AC Cypress Semiconductor Corp, CY7C025AV-25AC Datasheet - Page 9

• Manufacturer Part Number: CY7C025AV-25AC
• Description: IC,SRAM,8KX16,CMOS,QFP,100PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Switching Waveforms
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
ADDRESS
23. R/W is HIGH for read cycles.
24. Device is continuously selected CE = V
25. OE = V
26. Address valid prior to or coincident with CE transition LOW.
27. To access RAM, CE = V
DATA OUT
ADDRESS
DATA OUT
UB or LB
LB or UB
CE and
CE
IL
I
OE
I
CC
SB
.
PREVIOUS DATA VALID
IL
, UB or LB = V
t
OHA
[23, 25, 26, 27]
IL
IL
, SEM = V
t
and UB or LB = V
AA
t
PU
PRELIMINARY
t
AA
IH
t
t
LZCE
LZCE
. To access semaphore, CE = V
t
LZCE
[23, 26, 27]
t
t
ACE
IL
ABE
[23, 24, 25]
. This waveform cannot be used for semaphore reads.
t
LZOE
t
t
RC
ACE
t
RC
t
DOE
9
IH
, SEM = V
IL
.
CY7C0241AV/0251AV/036AV
DATA VALID
CY7C024AV/025AV/026AV
DATA VALID
t
OHA
t
t
t
OHA
HZCE
PD
t
t
t
HZOE
HZCE
HZCE