DS1746P-70IND(2010) 查看數據表（PDF） - Maxim Integrated
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DS1746P-70IND Datasheet PDF : 16 Pages
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DS1746/DS1746P Y2K-Compliant, Nonvolatile Timekeeping RAMs
AC CHARACTERISTICS—WRITE CYCLE (5V)
(VCC = 5.0V 10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL MIN
TYP
Write Cycle Time
tWC
70
Address Setup Time
tAS
0
WE Pulse Width
tWEW
50
CE Pulse Width
tCEW
60
Data Setup Time
tDS
30
Data Hold Time
tDH1
0
Data Hold Time
tDH2
0
WE Data Off Time
tWEZ
Write Recovery Time
tWR1
5
Write Recovery Time
tWR2
5
MAX
25
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
8
9
8
9
AC CHARACTERISTICS—WRITE CYCLE (3.3V)
(VCC = 3.3V 10%, TA = Over the Operating Range.)
PARAMETER
SYMBOL MIN
TYP
Write Cycle Time
tWC
120
Address Setup Time
tAS
0
WE Pulse Width
tWEW
100
CE Pulse Width
tCEW
110
CE and CE2 Pulse Width
tCEW
110
Data Setup Time
tDS
80
Data Hold Time
tDH1
0
Data Hold Time
tDH2
0
WE Data Off Time
tWEZ
Write Recovery Time
tWR1
5
Write Recovery Time
tWR2
10
MAX
120
40
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
8
9
8
9
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