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TC1232

Microprocessor Monitor w/ Watchdog Timer

Status: In Production

Features:

  • Precision Voltage Monitor: Adjustable +4.5V or +4.75V
  • Reset Pulse Width: 250 msec minimum
  • No External Components
  • Adjustable Watchdog Timer: 150msec, 600msec or 1.2sec
  • Operating Voltage 4.0V to 5.5V
  • Debounced Manual Reset Input for External Override
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

TC1232 is a fully-integrated processor supervisor. It provides three important functions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override. On power-up, the TC1232 holds the processor in the reset state for a minimum of 250msec after VCC is within tolerance to ensure a stable system start-up. Microprocessor sanity is monitored by the on-board watchdog circuit. The microprocessor must provide a periodic low-going signal on the ST input. Should the processor fail to supply this signal within the selected time-out period (150msec, 600msec or 1200msec), an out-of-control processor is indicated and the TC1232 issues a processor reset as a result. The outputs of the TC1232 are immediately driven active when the PB input is brought low by an external push-button switch or other electronic signal. When connected to a push-button switch, the TC1232 provides contact debounce. The TC1232 is packaged in a space-saving 8-pin plastic DIP or SOIC package and requires no external components.

Additional Features
    • Precision Voltage Monitor: Adjustable +4.5V or +4.75V
    • Reset Pulse Width: 250 msec minimum
    • No External Components
    • Adjustable Watchdog Timer: 150msec, 600msec or 1.2sec
    • Operating Voltage 4.0V to 5.5V
    • Debounced Manual Reset Input for External Override
Parametrics
Name
Value
Product Type
Supervisor
Watchdog Timer
Yes
Manual Reset
Yes
Operating Temp. Range (°C)
-40 to 85
Vcc Range (V)
4.5 - 5.5
Nominal Reset Voltage (V)
4.5, 4.75
Reset Type
Active Low/High or High/Low
Output
Dual Output Open-Drain and/or Push-Pull
Typical Reset Pulse Width (ms)
610
Typical Supply Current (µA)
50

Documents

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Data Sheet

02/28/2014
566KB

Product Line Card

Product Line Documents

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board
8-Pin SOIC/MSOP/TSSOP/DIP Evaluation Board ( SOIC8EV )

This is a blank PCB that allows the operation of Microchip Technology’s 8-pin devices to be easily evaluated. Each device pin is connected to a pull-up resistor, a pull-down resistor, an in-line resistor, and a loading capacitor. The PCB pads allow through hole or surface mount connectors to be installed to ease connection to the board. Additional passive component footprints are on the...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
TC1232COA
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC1232COA713
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC1232EOA
0.078000
0.250000
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC1232EOA713
0.078000
0.230303
8
SOIC
.150In(3.90mm)
Matte Tin
e3
TC1232COE
0.438000
0.765957
16
SOIC
.300In
Matte Tin
e3
TC1232COE713
0.438000
0.800000
16
SOIC
.300In
Matte Tin
e3
TC1232EOE
0.438000
0.765957
16
SOIC
.300In
Matte Tin
e3
TC1232EOE713
0.438000
0.800000
16
SOIC
.300In
Matte Tin
e3
TC1232CPA
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
TC1232EPA
0.486700
0.900000
8
PDIP
.300in
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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