CY7C133-25 CYPRESS [Cypress Semiconductor], CY7C133-25 Datasheet - Page 8

• Manufacturer Part Number: CY7C133-25
• Description: 2K x 16 Dual-Port Static RAM
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document #: 38-06036 Rev. *B
Switching Waveforms
Read Cycle No.1
Read Cycle No. 2
Read Cycle No. 3
Note:
21. R/W is HIGH for read cycle.
22. Device is continuously selected, CE = V
23. Address valid prior to or coincidence with CE transition LOW.
ADDRESS
DATA OUT
ADDRESS
ADDRESS
DATA OUT
DOUT
BUSY
R/W
D
INR
I
I
CE
OE
CC
SB
R
L
L
R
L
PREVIOUS DATA VALID
[21, 22]
[21, 23]
[22]
t
PU
t
OHA
t
LZCE
IL
t
and OE = V
t
LZOE
PS
t
ACE
IL
Read with BUSY (for master CY7C133)
.
Either Port Address Access
t
BLA
t
Either Port CE/OE Access
DOE
t
AA
ADDRESS MATCH
t
RC
t
RC
t
PWE
ADDRESS MATCH
t
DATA VALID
WDD
VALID
t
DATA VALID
DDD
t
HZOE
t
BHA
t
HD
t
HZCE
t
BDD
t
PD
CY7C133
CY7C143
VALID
Page 8 of 13