CY7C027V-25AXC Cypress Semiconductor Corp, CY7C027V-25AXC Datasheet - Page 12

• Manufacturer Part Number: CY7C027V-25AXC
• Description: IC,SRAM,32KX16,CMOS,QFP,100PIN,PLASTIC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C027V-25AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 512K (32K x 16)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 428-2100; CY7C027V-25AXC

Switching Waveforms
Document #: 38-06078 Rev. *D
Notes
37. CE = HIGH for the duration of the above timing (both write and read cycle).
38. I/O
39. Semaphores are reset (available to both ports) at cycle start.
40. If t
A
A
A
0R
SPS
0L
0R
0
SEM
SEM
–A
SEM
R/W
R/W
I/O
R/W
–A
–A
= I/O
OE
is violated, the semaphore is definitely obtained by one side or the other, but which side gets the semaphore is unpredictable.
2
2L
0
2R
R
L
R
0L
L
= LOW (request semaphore); CE
t
SA
Figure 10. Timing Diagram of Semaphore Contention
Figure 9. Semaphore Read After Write Timing, Either Side
(continued)
VALID ADRESS
t
AW
R
= CE
WRITE CYCLE
t
t
PWE
SCE
L
t
SD
= HIGH.
DATA
t
MATCH
SPS
MATCH
t
IN
HA
VALID
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
[38, 39, 40]
CY7C027V/027AV/028V
[37]
DATA
OUT
CY7C037AV/038V
VALID
t
OHA
Page 12 of 22
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