CY7C057V-15AXI Cypress Semiconductor Corp, CY7C057V-15AXI Datasheet - Page 14

• Manufacturer Part Number: CY7C057V-15AXI
• Description: CY7C057V-15AXI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C057V-15AXI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 1.152M (32K x 36)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 428-2105; CY7C057V-15AXI

Switching Waveforms
Document #: 38-06055 Rev. *E
Notes
39. CE
40. I/O
41. Semaphores are reset (available to both ports) at cycle start.
42. If t
A
A
A
SPS
0
0R
0R
0
0L
–A
SEM
SEM
SEM
= HIGH and CE
R/W
R/W
I/O
R/W
–A
OE
–A
= I/O
is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable.
2
0
2R
2L
R
R
L
L
0L
= LOW (request semaphore); CE
1
= LOW for the duration of the above timing (both write and read cycle).
t
SA
(continued)
VALID ADRESS
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
t
AW
WRITE CYCLE
t
t
0R
PWE
SCE
= CE
t
SD
DATA
t
MATCH
SPS
MATCH
0L
t
IN
= HIGH and CE
HA
VALID
t
HD
t
SWRD
1R
= CE
1L
=LOW.
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
[40, 41, 42]
[39]
DATA
OUT
VALID
t
OHA
CY7C056V
CY7C057V
Page 14 of 26
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