CY7C144-35AC Cypress Semiconductor Corp, CY7C144-35AC Datasheet - Page 8

• 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
Read Cycle No. 1 (Either Port Address Access)
Read Cycle No. 2 (Either Port CE/OE Access)
Read Timing with Port-to-Port Delay (M/S=L)
Notes:
15. R/W is HIGH for read cycle.
16. Device is continuously selected CE = LOW and OE = LOW. This waveform cannot be used for semaphore reads.
17. Address valid prior to or coincident with CE transition LOW.
18. CE
19. BUSY = HIGH for the writing port.
20. CE
ADDRESS
DATA OUT
ADDRESS
ADDRESS
DATA
DATAIN
SEM or CE
DATA OUT
L
L
= L, SEM = H when accessing RAM. CE = H, SEM = L when accessing semaphores.
R/W
= CE
OUTL
I
R
OE
I
R
R
CC
R
SB
L
= LOW.
PREVIOUS DATA VALID
t
PU
t
OHA
t
LZCE
t
LZOE
t
ACE
t
AA
[19, 20]
[15, 17, 18]
[15, 16]
t
DOE
MATCH
MATCH
t
WC
t
RC
t
PWE
t
WDD
VALID
t
SD
DATA VALID
t
DDD
t
DATA VALID
HZOE
t
HD
t
HZCE
t
PD
CY7C144
CY7C145
VALID
Page 8 of 20
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