DS1831C View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
MFG CO.
'DS1831C' PDF : 14 Pages View PDF
PIN CONFIGURATION
1 IN2.5V
2.5V Power Supply Input
2 RST 2.5V
3 TOL2.5V
4 TD2.5V
5 PBRST 2.5V
6 IN1
7 IN2
ST
8 GND
2.5V Reset Open Drain
Output
Selects 2.5V Input
Tolerance
Selects 2.5V Reset Time
Delay
2.5V Reset Pushbutton
Sense Input 1
Sense Input 2 (DS1831C/E)
Watchdog Strobe Inputs
(DS1831D)
Ground
9 MPBRST
TDWD
10 NM12
WDS
11 NM11
12 PBRST 3.3V
PBST
13 TD3.3V
14 TOL3.3V
15 RST 3.3V
16 IN3.3V
BLOCK DIAGRAM Figure 1
DS1831C/D/E
Master Pushbutton (DS1831C/E)
Watchdog Time Delay Select
(DS1831D)
Non Maskable Interrupt 2 (DS1831C/E)
Watchdog Status Output (DS1831D)
Non Maskable Interrupt 1
3.3V Reset Pushbutton (DS1831C/E)
Pushbutton Status Output (DS1831E)
Select 3.3V Reset Time Delay
Selects 3.3V Input Tolerance
3.3V Reset Open Drain Output
3.3V Power Supply Input
IN2.5V
100 kΩ
PBRST2.5V
TD2.5V
TOL2.5V
VCC
TOLERANCE
BIAS
+
MPBRS
IN3.3V
PBRST3.3V
TD3.3V
TOL3.3V
1.25V T.C.
REFERENCE
100 kΩ
100 kΩ
-
Level Sense
&
Debounce
VCC
TOLERANCE
BIAS
+
-
-
IN
+
-
IN
+
GROUN
TIME
DELAY
TIME
DELAY
RST2.5V
RST3 3V
NMI
NMI
2 of 14
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