CY7C4291-15JC Cypress Semiconductor Corp, CY7C4291-15JC Datasheet - Page 8

• Manufacturer Part Number: CY7C4291-15JC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4291-15JC

• Configuration: Dual
• Density: 1.125Mb
• Access Time (max): 10ns
• Word Size: 9b
• Organization: 128Kx9
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PLCC
• Clock Freq (max): 66.7MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 40mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Not Compliant

Document #: 38-06007 Rev. *C
Switching Waveforms
Write Cycle Timing
Read Cycle Timing
Notes:
13. t
14. t
between the rising edge of RCLK and the rising edge of WCLK is less than t
between the rising edge of WCLK and the rising edge of RCLK is less than t
REN1, REN2
SKEW1
SKEW1
REN1, REN2
(if applicable)
Q
D
WEN2
0
0
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
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
WEN1
WCLK
WCLK
WEN1
WEN2
RCLK
RCLK
–D
–Q
OE
FF
EF
17
17
t
ENS
t
OLZ
t
SKEW1
t
ENH
t
t
CLKH
[13]
CLKH
t
t
t
WFF
A
REF
t
OE
t
t
CLK
CKL
t
SKEW1
NO OPERATION
[14]
t
DS
t
t
CLKL
CLKL
t
ENS
SKEW1
SKEW2
, then FF may not change state until the next WCLK rising edge.
, then EF may not change state until the next RCLK rising edge.
t
VALID DATA
DH
t
ENH
t
REF
t
WFF
t
OHZ
NO OPERATION
NO OPERATION
CY7C4281
CY7C4291
Page 8 of 16
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