DS1553 Datasheet, PDF (12/19 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 = 3.3V ±10%, over the operating range.)
PARAMETER
SYMBOL
120ns ACCESS
MIN MAX
Write Cycle Time
t_WC
120
Address Setup Time
WE Pulse Width
CE Pulse Width
t_AS
0
t_WEW
100
t_CEW
110
Data Setup Time
t_DS
80
Data Hold Time
t_DH
0
Address Hold Time
WE Data Off Time
t_AH
t_WEZ
0
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
NOTES
Figure 6. Write Cycle Timing, Write-Enable Controlled
Figure 7. Write Cycle Timing, Chip-Enable Controlled
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