CY7C4255-25AC Cypress Semiconductor Corp, CY7C4255-25AC Datasheet - Page 9

• Manufacturer Part Number: CY7C4255-25AC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4255-25AC

• Density: 128Kb
• Word Size: 18b
• Sync/async: Synchronous
• Expandable: Yes
• Package Type: TQFP
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / Rohs Status: Not Compliant

Switching Waveforms
Empty Flag Timing
Full FlagTiming
Q
Q
D
D
0
0
0
0
WCLK
WCLK
RCLK
RCLK
WEN
–Q
–Q
–D
–D
REN
WEN
REN
OE
OE
EF
17
17
FF
17
17
t
DS
DATA IN OUTPUT REGISTER
t
LOW
SKEW1
t
ENS
[14]
t
ENS
NO WRITE
D0
(continued)
t
SKEW2
t
ENH
t
FRL
[18]
t
WFF
t
t
A
ENH
t
REF
t
DS
9
DATA WRITE
t
A
t
REF
DATA READ
t
DS
t
t
SKEW1
WFF
t
ENS
[14]
t
ENS
D1
t
t
SKEW2
ENH
NO WRITE
t
FRL
[18]
t
WFF
t
t
A
ENH
D0
NEXT DATA READ
CY7C4255
CY7C4265
t
REF
DATA WRITE
4255–10
4255–11