Datasheet

DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM
14 of 20
WRITE CYCLE, AC CHARACTERISTICS
(V
CC
= 5.0V ±10%, T
A
= Over the operating range.)
85ns ACCESS 100ns ACCESS
PARAMETER SYMBOL
MIN MAX MIN MAX
UNITS
Write Cycle Time t
WC
85 100 ns
Address Access Time t
AS
0 0 ns
WE Pulse Width
t
WEW
65 70 ns
CE Pulse Width
t
CEW
70 75 ns
Data Setup Time t
DS
35 40 ns
Data Hold time t
DH
0 0 ns
Address Hold Time t
AH
5 5 ns
WE Data Off Time
t
WEZ
30 35 ns
Write Recovery Time t
WR
5 5 ns
WRITE CYCLE, AC CHARACTERISTICS
(V
CC
= 3.3V ±10%, T
A
= Over the operating range.)
120ns ACCESS 150ns ACCESS
PARAMETER SYMBOL
MIN MAX MIN MAX
UNITS
Write Cycle Time t
WC
120 150 ns
Address Setup Time t
AS
0 0 ns
WE Pulse Width
t
WEW
100 130 ns
CE Pulse Width
t
CEW
110 140 ns
Data Setup Time t
DS
80 90 ns
Data Hold Time t
DH
0 0 ns
Address Hold Time t
AH
0 0 ns
WE Data Off Time
t
WEZ
40 50 ns
Write Recovery Time t
WR
10 10 ns