CY7C4251-15JXC Cypress Semiconductor Corp, CY7C4251-15JXC Datasheet - Page 10

• Manufacturer Part Number: CY7C4251-15JXC
• Description: IC SYNC FIFO MEM 8KX9 32-PLCC
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C4251-15JXC

• Function: Synchronous
• Memory Size: 72K (8K x 9)
• Data Rate: 100MHz
• Access Time: 10ns
• Voltage - Supply: 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-PLCC
• Configuration: Dual
• Density: 64Kb
• Access Time (max): 15ns
• Word Size: 9b
• Organization: 8Kx9
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Clock Freq (max): 40MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 35mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06016 Rev. *B
Switching Waveforms
Notes:
First Data Word Latency after Reset with Simultaneous Read and Write
Empty Flag Timing
17. The clocks (RCLK, WCLK) can be free-running during reset.
18. Holding WEN2/LD HIGH during reset will make the pin act as a second enable pin. Holding WEN2/LD LOW during reset will make the pin act as a load enable
19. After reset, the outputs will be LOW if OE = 0 and three-state if OE=1.
20. When t
21. The first word is available the cycle after EF goes HIGH, always.
(if applicable)
WEN2
Q
for the programmable flag offset registers.
t
D
CLK
WEN1
REN1,
WCLK
REN2
0
RCLK
0
–Q
–D
OE
+ t
EF
SKEW1
8
SKEW1
8
(if applicable)
D
LOW
Q
WEN2
WCLK
WEN1
REN1,
t
. The Latency Timing applies only at the Empty Boundary (EF = LOW).
RCLK
> minimum specification, t
REN2
DS
0
0
–D
–Q
OE
EF
t
t
ENS
ENS
8
8
DATAWRITE1
t
ENS
t
DS
(continued)
t
SKEW1
DATA IN OUTPUT REGISTER
t
ENH
t
ENH
D
0 (FIRST
t
FRL
FRL
(maximum) = t
[20]
VALID
t
SKEW1
Write)
t
OLZ
t
FRL
t
REF
CLK
[20]
+ t
SKEW1
t
D
REF
1
. When t
t
OE
t
SKEW1
A
t
REF
< minimum specification, t
t
DS
t
A
D
[21]
2
t
t
ENS
ENS
CY7C4421/4201/4211/4221
DATAWRITE2
t
ENH
t
SKEW1
t
ENH
CY7C4231/4241/4251
D
0
FRL
D
t
A
t
3
FRL
(maximum) = either 2*t
DATA Read
[20]
D
1
D
t
4
REF
Page 10 of 18
CLK
+ t
SKEW1
or