CY7C008-15AXC Cypress Semiconductor Corp, CY7C008-15AXC Datasheet - Page 11

• Manufacturer Part Number: CY7C008-15AXC
• Description: IC SRAM 512KBIT 15NS 100LQFP
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C008-15AXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 512K (64K x 8)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06041 Rev. *D
Switching Waveforms
Timing Diagram of Semaphore Contention
Semaphore Read After Write Timing, Either Side
Notes:
35. CE = HIGH for the duration of the above timing (both write and read cycle).
36. I/O
37. Semaphores are reset (available to both ports) at cycle start.
38. If t
A
A
A
SPS
0R
0R
0L
0
SEM
–A
SEM
SEM
R/W
–A
R/W
R/W
I/O
–A
= I/O
OE
is violated, the semaphore will definitely be obtained by one side or the other, but which side will get the semaphore is unpredictable.
2
2R
2L
0
R
R
L
L
0L
= LOW (request semaphore); CE
t
SA
(continued)
VALID ADRESS
t
AW
WRITE CYCLE
R
t
t
PWE
SCE
= CE
t
SD
DATA
t
MATCH
SPS
MATCH
[36, 37, 38]
L
= HIGH.
t
IN
HA
VALID
[35]
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
SAA
VALID ADRESS
t
DOE
t
ACE
DATA
OUT
CY7C008/009
CY7C018/019
VALID
t
OHA
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