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| DS1558 Datasheet, PDF (16/18 Pages) Dallas Semiconductor – Watchdog Clock with NV RAM Control | |||
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POWER-UP/DOWN CHARACTERISTICS
(VCC = +5V ±10%, TA = -40°C to +85°C.) (Figure 8)
PARAMETER
SYMBOL MIN
CE or WE at VIH,
Before Power-Down
VCC Fall Time: VPF(MAX) to VPF(MIN)
tPD
0
tF
300
VCC Fall Time: VPF(MIN) to VSO
tFB
10
VCC Rise Time: VPF(MIN) to VPF(MAX)
tR
0
VPF to RST High
tREC
40
DS1558
TYP
MAX
200
UNITS
ms
ms
ms
ms
ms
NOTES
Figure 8. +5V POWER-UP/DOWN WAVEFORM TIMING
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