CY7C057V-12AC Cypress Semiconductor Corp, CY7C057V-12AC Datasheet - Page 11

• Manufacturer Part Number: CY7C057V-12AC
• Description: IC SRAM 32KX36 3.3V ASYN 144LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C057V-12AC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1.152M (32K x 36)
• Speed: 12ns
• Interface: Parallel
• Voltage - Supply: 3.3V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1173

Switching Waveforms
Document #: 38-06055 Rev. **
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
24. OE = V
25. Address valid prior to or coinciding with CE
26. To access RAM, CE
ADDRESS
CE
B
B
DATA OUT
B
2
ADDRESS
0
DATA OUT
3
, B
CE
0
, CE
and CE
, WA, BA
, B
3
0
, WA, BA
1
, CE
1
, B
, B
1
IL
I
I
= B
CC
SB
2
OE
.
0
,
1
, B
0
= B
1
PREVIOUS DATA VALID
,
1
= B
0
2
= V
= B
IL
3
, =V
, CE
IH
1
=V
.
t
OHA
IH
[22, 24, 25, 26]
, B
0
= V
0
, B
t
IL
1
AA
, B
, CE
0
t
2
PU
transition LOW and CE
, B
1
=V
t
3
AA
, WA, BA are valid, and SEM = V
IH
t
t
LZCE
LZCE
, and B
t
LZCE
[22, 25, 26]
t
t
ACE
ABE
[22, 23, 24]
0
, B
BYTE SELECT VALID
t
LZOE
1
, B
t
t
2
SELECT VALID
RC
ACE
, B
1
transition HIGH.
t
RC
3
t
, WA, BA are valid. This waveform cannot be used for semaphore reads.
DOE
CHIP SELECT VALID
IH
. To access semaphore, CE
DATA VALID
0
= V
IH
, CE
DATA VALID
1
=V
t
OHA
IL
and SEM = V
t
t
t
OHA
HZCE
PD
t
t
t
HZCE
HZCE
HZOE
CY7C056V
CY7C057V
IL
or CE
Page 11 of 23
0
and SEM=V
IL
,