DS1646 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1646 Datasheet PDF : 12 Pages
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DS1646/DS1646P
AC ELECTRICAL CHARACTERISTICS (POWER–UP/DOWN TIMING)
PARAMETER
SYMBOL MIN
TYP
MAX
CE or WE at VIH before Power–
tPD
0
Down
VPF (Max) to VPF (Min) VCC Fall
tF
300
Time
VPF (Min) to VSO VCC Fall Time
tFB
10
VSO to VPF (Min) VCC Rise Time
tRB
1
VPF (Min) to VPF (Max) VCC Rise
tR
0
Time
Power–Up
tREC
15
25
35
Expected Data Retention Time
tDR
10
(Oscillator On)
(0°C to 70°C)
UNITS NOTES
µs
µs
µs
µs
µs
ms
years
4
DS1646 READ CYCLE TIMING
READ
tRC
A0–A16
tCEA
CE
tCEL
OE
tOEA
READ
tRC
tAA
WRITE
tWC
tAH
tAS
WE
DQ0–DQ7
tOEL
tOH
VALID OUT
tWR
tWEW
VALID OUT
tOEZ
VALID IN
031698 7/12
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