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DS1232 Datasheet(PDF) 1 Page - Dallas Semiconductor

Part # DS1232
Description  MicroMonitor Chip
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1232 Datasheet(HTML) 1 Page - Dallas Semiconductor

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111899
FEATURES
Halts and restarts an out-of-control
microprocessor
Holds microprocessor in check during power
transients
Automatically restarts microprocessor after
power failure
Monitors pushbutton for external override
Accurate 5% or 10% microprocessor power
supply monitoring
Eliminates the need for discrete components
Space-saving, 8-pin mini-DIP
Optional 16-pin SOIC surface mount package
Industrial temperature -40°C to +85°C
available, designated N
PIN ASSIGNMENT
PIN DESCRIPTION
PBRST
- Pushbutton Reset Input
TD
- Time Delay Set
TOL
- Selects 5% or 10% VCC Detect
GND
- Ground
RST
- Reset Output (Active High)
RST
- Reset Output (Active Low, open
drain)
ST
- Strobe Input
VCC
- +5 Volt Power
NC
- No Connections
DESCRIPTION
The DS1232 MicroMonitor Chip monitors three vital conditions for a microprocessor: power supply,
software execution, and external override. First, a precision temperature-compensated reference and
comparator circuit monitors the status of VCC. When an out-of-tolerance condition occurs, an internal
power fail signal is generated which forces reset to the active state. When VCC returns to an in-tolerance
condition, the reset signals are kept in the active state for a minimum of 250 ms to allow the power supply
and processor to stabilize.
DS1232
MicroMonitor Chip
www.dalsemi.com
DS1232S 16-Pin SOIC (300-mil)
See Mech. Drawings Section
NC
PBRST
NC
TD
NC
TOL
NC
GND
NC
VCC
NC
ST
NC
RST
NC
RST
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
PBRST
DS1232 8-Pin DIP (300-mil)
See Mech. Drawings Section
TD
TOL
GND
VCC
ST
RST
1
2
3
4
8
7
6
5
RST


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