
DS1643/DS1643P
9 of 17
AC CHARACTERISTICS—WRITE CYCLE
(VCC = 5.0V 10%, TA = 0C to +70C.)
85ns
ACCESS
100ns
ACCESS
PARAMETER
SYMBOL
MIN
MAX
MIN
MAX
UNITS
NOTES
Write Cycle Time
tWC
85
100
ns
4
Address Setup Time
tAS
0
ns
4
WE
Pulse Width
tWEW
65
70
ns
4
CE
Pulse Width
tCEW
70
75
ns
4
CE2 Pulse Width
tCE2W
75
85
ns
4
Data Setup Time
tDS
35
40
ns
4
Data Hold Time
tDH
0
ns
4
Address Hold Time
tAH
5
ns
4
WE
Data Off Time
tWEZ
30
35
ns
4
Write Recovery Time
tWR
5
ns
4