DS1553 Datasheet, PDF (14/20 Pages) Maxim Integrated Products – 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM

DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM
WRITE CYCLE, AC CHARACTERISTICS
(V_CC = 5.0V ±10%, T_A = Over the operating range.)
PARAMETER
85ns ACCESS
SYMBOL
MIN MAX
Write Cycle Time
t_WC
85
Address Access 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
t_DH
0
Address Hold Time
WE Data Off Time
t_AH
t_WEZ
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
WRITE CYCLE, AC CHARACTERISTICS
(V_CC = 3.3V ±10%, T_A = Over the operating range.)
PARAMETER
120ns ACCESS
SYMBOL
MIN MAX
Write Cycle Time
t_WC
120
Address Setup Time
t_AS
0
WE Pulse Width
t_WEW
100
CE Pulse Width
t_CEW
110
Data Setup Time
t_DS
80
Data Hold Time
t_DH
0
Address Hold Time
t_AH
0
WE Data Off Time
t_WEZ
40
Write Recovery Time
t_WR
10
150ns ACCESS
MIN MAX
150
0
130
140
90
0
0
50
10
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
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