
DS1251/DS1251P
10 of 20
MEMORY AC ELECTRICAL CHARACTERISTICS
(TA = Over the operating range.) (5V)
3B
PARAMETER
SYMBOL
DS1251Y-70
UNITS
8B
NOTES
MIN
9B
MAX
Read Cycle Time
tRC
70
ns
Access Time
tACC
70
ns
OE
to Output Valid
tOE
35
ns
CE
to Output Valid
tCO
70
ns
OE
or CE to Output Active
tCOE
5
ns
5
Output High-Z from Deselection
tOD
25
ns
5
Output Hold from Address Change
tOH
5
ns
Write Cycle Time
tWC
70
ns
Write Pulse Width
tWP
50
ns
3
Address Setup Time
tAW
0
ns
Write Recovery Time
tWR
0
ns
Output High-Z from WE
tODW
25
ns
5
Output Active from WE
tOEW
5
ns
5
Data Setup Time
tDS
30
ns
4
Data Hold Time from WE
tDH
5
ns
4