SMS48
PreliminaryInformation
AC OPERATING CHARACTERISTICS
(Over Recommended Operating Conditions; Voltages are relative to GND)
Symbol
tPRTO
Parameter
Notes
Min.
19
Typ.
25
Max.
31
Unit
ms
ms
ms
ms
µs
38
50
63
Programmable reset pulse
width
75
100
200
20
125
250
150
tDRST
Vin to RESET# delay
100mV overdrive
OFF
400
800
1600
3200
6400
—
300
600
500
ms
ms
ms
1000
2000
4000
8000
Programmable Watchdog
timer period
tPWDTO
1200
2400
4800
ms
ns
Minimum pulse required to bring
Reset active
TMR
MR# input pulse width
300
200
Delay from MR# low to
RESET# low
TDMRRST
ns
SUMMIT MICROELECTRONICS, Inc.
2088 1.1 04/11/05
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