SMS44
Symbol
Parameter
WD2
0
0
Programmable watchdog
timer period
Notes
WD1
0
1
0
0
1
1
LD1
0
WD0
0
1
0
1
0
1
LD0
0
1
0
1
PUP#X-0
0
1
0
1
Min.
Typ.
Max.
Unit
OFF
280
560
1120
2240
4480
400
800
1600
3200
6400
520
1040
2080
4160
8320
ms
t
PWDTO
1
1
1
1
OFF
1120
2240
4480
1600
3200
6400
2080
4160
8320
ms
t
PLDTO
Programmable longdog
timer period
0
1
1
PUP#X-1
0
OFF
25
50
100
100
50
100
0.6
0.7
×
V
CC
µA
ns
ns
V
V
2047 Elect TableB 2.0
t
PDLY
X
Programmable delay from
V
PTH
to PUP# out
0
1
1
ms
I
MR
T
MR
T
DMRRST
V
IL
V
IH
MR# pullup current
MR# input pulse width
Delay from MR# low to
RESET# low
MR# input threshold
4
2047 2.3 10/23/00
SUMMIT MICROELECTRONICS, Inc.