CY7C024-15JXC Cypress Semiconductor Corp, CY7C024-15JXC Datasheet - Page 13

• Manufacturer Part Number: CY7C024-15JXC
• Description: IC SRAM 64KBIT 15NS 84PLCC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C024-15JXC

• Format - Memory: RAM
• Memory Type: SRAM - Dual Port, Asynchronous
• Memory Size: 64K (4K x 16)
• Speed: 15ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 84-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Switching Waveforms
Notes
Document #: 38-06035 Rev. *D
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
SPS
A
A
0R
0R
0L
0
= I/O
SEM
SEM
is violated, the semaphore is definitely obtained by one side or the other, but which side gets the semaphore is unpredictable.
–A
SEM
R/W
R/W
I/O
R/W
–A
–A
OE
0L
2
2L
0
2R
R
L
R
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
t
L
SD
DATA
t
= HIGH.
MATCH
SPS
MATCH
t
IN
HA
VALID
t
HD
t
SWRD
t
SOP
t
SOP
READ CYCLE
t
AA
VALID ADRESS
t
DOE
t
ACE
[38, 39, 40]
[37]
DATA
CY7C024/024A/0241
OUT
VALID
CY7C025/0251
t
OHA
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