DS1743 Datasheet, PDF (9/17 Pages) Dallas Semiconductor – Y2KC Nonvolatile Timekeeping RAM

WRITE CYCLE, AC CHARACTERISTICS
DS1743/DS1743P
(Over the Operating Range; V_CC = 5.0V ± 10%)
70 ns access 100 ns access
PARAMETER
SYMBOL ^{MIN MAX MIN MAX} UNITS NOTES
Write Cycle Time
t_WC
70
100
ns
5
Address Setup Time
t_AS
0
0
ns
5
WE Pulse Width
t_WEW
50
70
ns
5
CE Pulse Width
t_CEW
60
75
ns
5
CE2 Pulse Width
t_CE2W
65 85
ns
5
Data Setup Time
t_DS
30
40
ns
5
Data Hold time
t_DH
0
0
ns
5
Address Hold Time
t_AH
5
5
ns
5
WE Data Off Time
t_WEZ
25
35
ns
5
Write Recovery Time
t_WR
5
5
ns
5
WRITE CYCLE, AC CHARACTERISTICS
(Over the Operating Range; V_CC = 3.3V ± 10%)
120 ns access 150 ns access
PARAMETER
SYMBOL ^{MIN MAX MIN MAX} UNITS NOTES
Write Cycle Time
t_WC
120
150
ns
5
Address Setup Time
t_AS
0
0
ns
5
WE Pulse Width
t_WEW
100
130
ns
5
CE and CE2 Pulse Width
t_CEW
110
140
ns
5
Data Setup Time
t_DS
80
90
ns
5
Data Hold Time
t_DH
0
0
ns
5
Address Hold Time
t_AH
0
0
ns
5
WE Data Off Time
t_WEZ
40
50
ns
5
Write Recovery Time
t_WR
10
10
ns
5
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