CY7C419/21/25/29/33
Switching Characteristics
Over the Operating Range
[7, 8]
(continued)
7C419–10
7C421–10
7C425–10
7C429–10
7C433–10
Parameter
t
EFL
t
HFH
t
FFH
t
REF
t
RFF
t
WEF
t
WFF
t
WHF
t
RHF
t
RAE
t
RPE
t
WAF
t
WPF
t
XOL
t
XOH
MR to EF LOW
MR to HF HIGH
MR to FF HIGH
Read LOW to EF LOW
Read HIGH to FF HIGH
Write HIGH to EF HIGH
Write LOW to FF LOW
Write LOW to HF LOW
Read HIGH to HF HIGH
Effective Read from Write HIGH
Effective Read Pulse Width After EF HIGH
Effective Write from Read HIGH
Effective Write Pulse Width After FF HIGH
Expansion Out LOW Delay from Clock
Expansion Out HIGH Delay from Clock
10
10
10
10
10
15
15
15
Description
Min.
Max.
20
20
20
10
10
10
10
10
10
10
15
15
20
20
20
7C419–15
7C421–15
7C425–15
7C429–15
7C433–15
Min.
Max.
25
25
25
15
15
15
15
15
15
15
20
20
25
25
25
7C420–20
7C421–20
7C424–20
7C425–20
7C428–20
7C429–20
7C433–20
Min.
Max.
30
30
30
20
20
20
20
20
20
20
25
25
7C420–25
7C421–25
7C424–25
7C425–25
7C429–25
7C432–25
7C433–25
Min.
Max.
35
35
35
25
25
25
25
25
25
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Document #: 38-06001 Rev. *A
Page 6 of 22
CYPRESS [ CYPRESS SEMICONDUCTOR ]
