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| DS1384 Datasheet, PDF (13/17 Pages) Dallas Semiconductor – Watchdog Timekeeping Controller | |||
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CAPACITANCE
PARAMETER
Capacitance on all pins
(except DQ)
Capacitance on DQ pins
SYMBOL
CI
CDQ
MIN
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
CE at VIH before Power
tPD
0
Down
VPF (Max) to VPF (Min)
tF
300
VCC Fall Time
VPF (Min) to VSO VCC Fall
tFB
10
Time
VPF (Min) to VPF (Max)
tR
0
VCC Rise Time
Power Up
tREC
10
Expected Data Retention
tDR
10
Time (Oscillator On)
TYP
7
7
TYP
MAX
15
15
MAX
150
UNITS
pF
DS1384
(tA = 25°C)
NOTES
pF
(0°C to 70°C)
UNITS NOTES
µs
µs
µs
µs
ms
years
7
READ CYCLE TIMING: RTC AND EXTERNAL SRAM CONTROL SIGNALS
13 of 17
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