CY7C144-35AC Cypress Semiconductor Corp, CY7C144-35AC Datasheet - Page 10

• Manufacturer Part Number: CY7C144-35AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C144-35AC

• Density: 64Kb
• Access Time (max): 35ns
• Package Type: TQFP
• Operating Temp Range: 0C to 70C
• Supply Current: 160mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Word Size: 8b
• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-06034 Rev. *C
Switching Waveforms
Semaphore Read After Write Timing, Either Side
Semaphore Contention
Notes:
25. CE = HIGH for the duration of the above timing (both write and read cycle).
26. I/O
27. Semaphores are reset (available to both ports) at cycle start.
28. If t
A
0
SEM
A
SPS
−A
R/W
I/O
A
0R
OE
0R
0L
= I/O
SEM
2
0
SEM
−A
R/W
−A
is violated, the semaphore will definitely be obtained by one side or the other, but there is no guarantee which side will control the semaphore.
R/W
2R
2L
0L
R
L
L
R
= LOW (request semaphore); CE
t
SA
[26, 27, 28]
(continued)
VALID ADDRESS
t
AW
WRITE CYCLE
t
t
PWE
SCE
R
t
DATA
SD
= CE
t
MATCH
SPS
MATCH
L
t
= HIGH
IN
HA
VALID
t
HD
[25]
t
SWRD
t
SOP
t
SOP
READ CYCLE
VALID ADDRESS
t
AA
t
ACE
t
DOE
DATA
OUT
VALID
t
OHA
CY7C144
CY7C145
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