CY7C4251-10JCT Cypress Semiconductor Corp, CY7C4251-10JCT Datasheet - Page 10

• Manufacturer Part Number: CY7C4251-10JCT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4251-10JCT

• Configuration: Dual
• Density: 64Kb
• Access Time (max): 8ns
• Word Size: 9b
• Organization: 8Kx9
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: PLCC
• Clock Freq (max): 100MHz
• 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: Not Compliant

Switching Characteristics
Document #: 38-06016 Rev. *D
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Notes
S
A
CLK
CLKH
CLKL
DS
DH
ENS
ENH
RS
RSS
RSR
RSF
OLZ
OE
OHZ
WFF
REF
PAF
PAE
SKEW1
SKEW2
Parameter
10. C
11. C
12. Pulse widths less than minimum values are not allowed.
13. Values guaranteed by design, not currently tested.
L
L
= 30 pF for all AC parameters except for t
= 5 pF for t
Clock Cycle Frequency
Data Access Time
Clock Cycle Time
Clock HIGH Time
Clock LOW Time
Data Setup Time
Data Hold Time
Enable Setup Time
Enable Hold Time
Reset Pulse Width
Reset Setup Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z
Output Enable to Output Valid
Output Enable to Output in High-Z
Write Clock to Full Flag
Read Clock to Empty Flag
Clock to Programmable Almost-Full Flag
Clock to Programmable Almost-Full Flag
Skew Time between Read Clock and Write Clock for
Empty Flag and Full Flag
Skew Time between Read Clock and Write Clock for
Almost-Empty Flag and Almost-Full Flag
OHZ
OUTPUT
.
INCLUDING
5V
JIG AND
SCOPE
C
L
[12]
R1 1.1 K Ω
Description
Over the Operating Range
Equivalent to:
OHZ
Figure 4. AC Test Loads and Waveforms
.
R2
680Ω
[13]
[13]
OUTPUT
THÉ VENIN EQUIVALENT
Min
GND
4.5
4.5
0.5
0.5
3.0V
10
10
10
420Ω
2
3
3
8
8
0
3
3
5
≤ 3 ns
-10
Max
100
10
8
7
7
8
8
8
8
1.91V
ALL INPUT PULSES
[10, 11]
10%
90%
CY7C4421/4201/4211/4221
Min
15
15
10
10
15
2
6
6
4
1
4
1
0
3
3
6
-15
CY7C4231/4241/4251
Max
66.7
10
15
10
10
10
10
8
8
90%
Min
25
10
10
25
15
15
10
18
2
6
1
6
1
0
3
3
10%
-25
≤ 3 ns
Max
40
15
25
12
12
15
15
15
15
Page 10 of 20
MHz
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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