DS1642 Datasheet, PDF (8/13 Pages) Dallas Semiconductor – Nonvolatile Timekeeping RAM

DS1642
AC CHARACTERISTICS—WRITE CYCLE
(V_CC = 5.0V ±10, T_A = 0°C to +70°C.)
PARAMETER
SYMBOL
85ns ACCESS
MIN MAX
Write Cycle Time
t_WC
85
Address Setup Time
t_AS
0
WE Pulse Width
t_WEW
65
CE Pulse Width
t_CEW
70
Data Setup Time
t_DS
35
Data Hold Time
Address Hold Time
WE Data Off Time
t_DH
t_AH
t_WEZ
0
5
30
Write Recovery Time
t_WR
5
100ns ACCESS
MIN MAX
100
0
70
75
40
0
5
35
5
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
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