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P4C422
Max
AC CHARACTERISTICS—WRITE CYCLE
(V
CC = 5V ± 10% except as noted, All Temperature Ranges)
(2)
TIMING WAVEFORM OF WRITE CYCLE
Parameter
Write Cycle Time (5)
Write Enable to High-Z (6)
Write Recovery Time
Write Pulse Width (5,7)
Data Setup Time Prior to Write (5)
Data Hold Time (5)
Address Setup Time (5,7)
Address Hold Time (5)
Chip Select Setup Time (5)
Chip Select Hold Time (5)
Sym.
t
WC
t
ZWS
t
WR
t
W
t
WSD
t
WHD
t
WSA
t
WHA
t
WSCS
t
WHCS
-10*
-12
-15
-20
-25
-35
Unit
Min Max Min Max Min Max Min
Min Max Min Max
10
8
0
2
8
8
12
9
0
10
10
15
11
0
2
12
12
20
13
2
15
15
25
15
5
20
20
35
20
5
30
25
ns
ns
ns
ns
ns
*V
CC = 5V ± 5%
22
5
55
ns
00
0
2
5
5
ns
22
4
5
5
5
ns
0
00
2
5
5
ns
22
5
5
5
ns
tWR
tZWS
tWHCS
tWHD
tWSD
tWSA
tWSCS
tWC
CS1
CS2
WE
ADDRESS
O0–O3
DATA IN
D0–D3
A0–A7
tW
tWHA
DATA
OUTPUTS