CY7C4245V-25ASC Cypress Semiconductor Corp, CY7C4245V-25ASC Datasheet - Page 13

• Manufacturer Part Number: CY7C4245V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4245V-25ASC

• Configuration: Dual
• Density: 64Kb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 4Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 40MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Supply Current: 30mA
• 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
Notes
Document #: 38-06029 Rev. *D
15. t
16. The clocks (RCLK, WCLK) can be free-running during reset.
17. After reset, the outputs will be LOW if OE = 0 and three-state if OE = 1.
the rising edge of WCLK and the rising edge of RCLK is less than t
SKEW2
REN, WEN,
Q
0
EF,PAE
FF,PAF,
Q
WCLK
RCLK
–Q
is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that EF will go HIGH during the current clock cycle. It the time between
WEN
REN
0
–Q
OE
EF
17
RS
HF
LD
17
t
ENS
t
OLZ
(continued)
t
ENH
t
CLKH
t
t
A
REF
t
t
t
RSF
RSF
RSF
t
OE
t
RS
Figure 6. Read Cycle Timing
t
Figure 7. Reset Timing
CLK
t
SKEW2
NO OPERATION
SKEW2
[15]
t
CLKL
, then EF may not change state until the next RCLK edge.
[16]
VALID DATA
t
RSR
t
REF
t
OHZ
CY7C4225V/4215V
CY7C4235V/4245V
OE = 1
OE = 0
[17]
Page 13 of 23
[+] Feedback
[+] Feedback