CY7C4231-10ACT データシートの表示（PDF） - Cypress Semiconductor
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CY7C4231-10ACT Datasheet PDF : 18 Pages
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CY7C4421/4201/4211/4221
CY7C4231/4241/4251
Switching Characteristics Over the Operating Range
Parameter
Description
tDH
tENS
tENH
tRS
tRSS
tRSR
tRSF
tOLZ
tOE
tOHZ
tWFF
tREF
tPAF
tPAE
tSKEW1
Data Hold Time
Enable Set-up Time
Enable Hold Time
Reset Pulse Width[13]
Reset Set-up Time
Reset Recovery Time
Reset to Flag and Output Time
Output Enable to Output in Low-Z[14]
Output Enable to Output Valid
Output Enable to Output in High-Z[14]
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
tSKEW2
Skew Time between Read Clock and Write Clock
for Almost-Empty Flag and Almost-Full Flag
-10
Min. Max.
0.5
3
0.5
10
8
8
10
0
3
7
3
7
8
8
8
8
5
10
-15
Min. Max.
1
4
1
15
10
10
15
0
3
8
3
8
10
10
10
10
6
15
-25
Min. Max.
1
6
1
25
15
15
25
0
3
12
3
12
15
15
15
15
10
18
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Switching Waveforms
Write Cycle Timing
WCLK
D0 –D8
WEN1
tCLKH
tCLK
tCLKL
tDS
tENS
tDH
tENH
NO OPERATION
WEN2
(if applicable)
FF
RCLK
tWFF
[15]
tSKEW1
tWFF
NO OPERATION
REN1,REN2
Notes:
13. Pulse widths less than minimum values are not allowed.
14. Values guaranteed by design, not currently tested.
Document #: 38-06016 Rev. *B
Page 8 of 18
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