CY7C4245V-25ASC Cypress Semiconductor Corp, CY7C4245V-25ASC Datasheet - Page 12

• 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 Characteristics
Switching Waveforms
Note
Document #: 38-06029 Rev. *D
t
t
t
t
t
t
14. t
XO
XI
XIS
SKEW1
SKEW2
SKEW3
Parameter
the rising edge of RCLK and the rising edge of WCLK is less than t
SKEW1
D
0
WCLK
RCLK
–D
is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that FF will go HIGH during the current clock cycle. If the time between
WEN
REN
17
FF
Clock to Expansion Out
Expansion in Pulse Width
Expansion in Set-up Time
Skew Time between Read Clock and Write Clock for
Full Flag
Skew Time between Read Clock and Write Clock for
Empty Flag
Skew Time between Read Clock and Write Clock for
Programmable Almost Empty and Programmable
Almost Full Flags.
t
SKEW1
Description
Over the Operating Range (continued)
t
[14]
CLKH
t
WFF
Figure 5. Write Cycle Timing
t
CLK
SKEW1
t
DS
, then FF may not change state until the next WCLK edge.
t
CLKL
t
ENS
7C42X5V-15
Min
6.5
15
5
6
6
t
DH
t
ENH
Max
10
t
WFF
7C42X5V-25
Min
10
10
10
10
18
NO OPERATION
Max
15
CY7C4225V/4215V
CY7C4235V/4245V
7C42X5V-35
Min
14
15
12
12
20
Max
20
Page 12 of 23
Unit
ns
ns
ns
ns
ns
ns
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