CY7C026A-15AXI Cypress Semiconductor Corp, CY7C026A-15AXI Datasheet - Page 12

• Manufacturer Part Number: CY7C026A-15AXI
• Description: CY7C026A-15AXI
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C026A-15AXI

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 256K (16K x 16)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Switching Waveforms
Document #: 38-06046 Rev. *F
Notes
32. CE = HIGH for the duration of the above timing (both write and read cycle).
33. I/O
34. Semaphores are reset (available to both ports) at cycle start.
35. If t
A
A
A
SPS
0
0R
0L
0R
–A
SEM
SEM
SEM
R/W
R/W
I/O
R/W
–A
OE
= I/O
–A
is violated, the semaphore is definitely obtained by one side or the other, but which side gets the semaphore is unpredictable.
2
0
2L
2R
R
R
L
L
0L
= LOW (request semaphore); CE
t
SA
Figure 9. Timing Diagram of Semaphore Contention
Figure 8. Semaphore Read After Write Timing, Either Side
(continued)
VALID ADRESS
t
AW
WRITE CYCLE
t
t
R
PWE
SCE
= CE
t
SD
DATA
t
MATCH
SPS
MATCH
L
= HIGH.
t
IN
HA
VALID
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
[33, 34, 35]
[32]
DATA
OUT
VALID
t
OHA
CY7C026A
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