CY7C131-55JCT Cypress Semiconductor Corp, CY7C131-55JCT Datasheet - Page 10

• Manufacturer Part Number: CY7C131-55JCT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C131-55JCT

• Density: 8Kb
• Access Time (max): 55ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 20b
• Package Type: PLCC
• Operating Temp Range: 0C to 70C
• Number Of Ports: 2
• Supply Current: 110mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 52
• Word Size: 8b
• Number Of Words: 1K
• Lead Free Status / RoHS Status: Not Compliant

Switching Waveforms
Document #: 38-06002 Rev. *F
Notes
ADDRESS
23. If OE is LOW during a R/W controlled write cycle, the write pulse width must be the larger of t
24. If the CE LOW transition occurs simultaneously with or after the R/W LOW transition, the outputs remain in the high impedance state.
ADDRESS
DATA
DATA
D
DATA
and for data to be placed on the bus for the required t
OUT
R/W
OE
CE
R/W
IN
OUT
CE
IN
Figure 9. Write Cycle No. 2 (R/W Three-States Data I/Os—Either Port)
Figure 8. Write Cycle No. 1 (OE Three-States Data I/Os—Either Port
t
HZOE
t
SA
(continued)
t
SA
SD
.
t
SCE
t
SCE
t
AW
t
AW
t
Either Port
HZWE
t
WC
t
WC
HIGH IMPEDANCE
t
PWE
DATA VALID
t
PWE
t
SD
PWE
HIGH IMPEDANCE
or t
t
DATA VALID
SD
HZWE
+ t
SD
to allow the data I/O pins to enter high impedance
t
HD
t
HD
t
LZWE
t
HA
t
HA
CY7C130, CY7C130A
CY7C131, CY7C131A
[16, 23]
[17, 24]
Page 10 of 19
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