SMS47
Preliminary Information
AC OPERATING CHARACTERISTICS
(Over
Recommended Operating Conditions; Voltages are relative to GND, also see configuration registers)
Symbol
Parameter
WD2
0
0
Notes
WD1
0
1
0
0
1
1
PUP#X-1
0
WD0
X
1
0
1
0
1
PUP#X-0
0
1
0
1
Min.
Typ.
OFF
Max.
Unit
—
300
600
1200
2400
4800
400
800
1600
3200
6400
0ms
500
1000
2000
4000
8000
—
31
63
125
µA
ns
ns
ms
ms
t
PWDTO
Programmable Watchdog
timer period
1
1
1
1
t
PDLY
X
Programmable delay from
V
PTH
to PUP# out
0
1
1
19
38
75
25
50
100
100
300
200
I
MR
T
MR
T
DMRRST
MR# pullup current
MR# input pulse width
Delay from MR# low to
RESET# low
RTO1
0
RTO0
0
1
0
1
19
38
75
150
Minimum
25
50
100
200
20
31
63
125
250
ms
ms
ms
ms
µs
t
PRTO
Programmable reset pulse
width
0
1
1
t
DRST
V in to RESET# delay
100mV overdrive
SUMMIT MICROELECTRONICS, Inc.
2087 1.0 04/11/05
5
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
