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Part Name(s) : TC32MCDBTR TC32MEDBTR
Microchip
Microchip Technology
Description : ECONOMONITOR™ – 3-Pin System supervisor with Power Supply Monitor and watchdog

General Description:
The TC32M is a fully-integrated processor supervisor in a 3-pin package. It provides three important func tions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override.
On power-up, the TC32M holds the processor in the reset state for a minimum of 500 msec after VDD 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 high-to-low level shift (through an external resistor divider) on the RS pin of the TC32M. Should the processor fail to supply this signal within the specified time-out period (typically 700 msec), an out-of-control processor is indicated and the TC32M issues a processor reset as a result.
The output of the TC32M can be wire-ORed with a push-button switch (or electronic signal) to override the TC32M and unconditionally reset the processor. When connected to a push-button switch, the TC32M provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or SOT-223 package. It provides all of the functionality of the industry standard TC1232 in a smaller, lower cost configuration.

Features:
• Incorporates the Functionality of the Industry
   Standard TC1232 (Processor Monitor, watchdog
   and Manual Override reset Controller) into a
   Small, Lower Cost Package
• Guards Against Unstable Processor Operation
   Resulting from Power “Brown-Out”
• Automatically Halts and Restarts an Out-of
   Control Microprocessor
• Output can be Wire-ORed, or Hooked to Manual
   reset push-button Switch
• Space-Saving 3-Pin TO-92 or SOT-223 Package

Applications:
• All Microprocessor-Based Systems
• Battery Powered Computers and Controllers
• Automotive Systems
• Intelligent Instruments
• Critical Processor Monitoring
• Embedded Controllers

TelCom-Semiconductor
TelCom Semiconductor Inc => Microchip
Description : ECONOMONITOR™ – 3-PIN SYSTEM supervisor with POWER SUPPLY MONITOR and watchdog

GENERAL DESCRIPTION
The TC32M is a fully-integrated processor supervisor in a 3-pin package. 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 TC32M holds the processor in the reset state for a minimum of 500msec after VDD 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 high-to-low level shift (through an external resistor divider) on the RS pin of the TC32M. Should the processor fail to supply this signal within the specified timeout period (typically 700msec), an out-of control processor is indicated and the TC32M issues a processor reset as a result.
The output of the TC32M can be wire-ORed with a push button switch (or electronic signal) to override the TC32M and unconditionally reset the processor. When connected to a push-button switch, the TC32M provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or SOT-223 package. It provides all of the functionality of the industry standard TC1232 in a smaller, lower cost configuration.

FEATURES
■ Incorporates the Functionality of the Industry
   Standard TC1232 (Processor Monitor, watchdog
   and Manual Override reset Controller) into a
   Small, Lower Cost Package
■ Guards Against Unstable Processor Operation
   Resulting from Power "Brown-Out"
■ Automatically Halts and Restarts an Out-of
   Control Microprocessor
■ Output can be Wire-ORed, or Hooked to Manual
   reset push-button Switch
■ Space-Saving 3-Pin TO-92 or SOT-223 Package

APPLICATIONS
■ All Microprocessor-Based Systems
■ Battery Powered Computers and Controllers
■ Automotive Systems
■ Intelligent Instruments
■ Critical Processor Monitoring
■ Embedded Controllers

Mitsumi
Mitsumi
Description : System reset (with built-in watchdog timer)

Outline
This IC has a built-in watchdog timer, with 2 channels for a clock monitoring function that monitors the microcomputer and outputs an intermittent reset signal if the microcomputer runs wild. Also, it has a power supply voltage monitoring function (system reset function) which generates a reset signal if power supply voltage is momentarily interrupted or drops, and performs power ON reset during normal power supply recovery and when power is turned on.

Features
1. Built-in edge trigger input watchdog timer
2. 2 clock pulse monitoring
3. Power ON reset time (TPR) and watchdog timer monitoring time (TWD) can be set individually with external elements (R, C)
4. Excellent watchdog timer monitoring time (TWD) precision A type : ±20%
                                                                                                  B type : ±30%
5. watchdog function stop pin allows use as system reset IC
6. Accurate power supply voltage drop detection 4.2V±3.5%
7. Detection voltage has hysteresis 100mV typ. ±0.14%/°C
8. Low reset minimum voltage
9. Low current consumption 150µA typ.

Applications
    Voltage detection for CPUs, microcomputers, etc. and clock pulse monitoring

Description : ECONOMONITOR™ – 3-Pin System supervisor with Power Supply Monitor and watchdog

General Description:
The TC32M is a fully-integrated processor supervisor in a 3-pin package. It provides three important func tions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override.
On power-up, the TC32M holds the processor in the reset state for a minimum of 500 msec after VDD 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 high-to-low level shift (through an external resistor divider) on the RS pin of the TC32M. Should the processor fail to supply this signal within the specified time-out period (typically 700 msec), an out-of-control processor is indicated and the TC32M issues a processor reset as a result.
The output of the TC32M can be wire-ORed with a push-button switch (or electronic signal) to override the TC32M and unconditionally reset the processor. When connected to a push-button switch, the TC32M provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or SOT-223 package. It provides all of the functionality of the industry standard TC1232 in a smaller, lower cost configuration.

Features:
• Incorporates the Functionality of the Industry
   Standard TC1232 (Processor Monitor, watchdog
   and Manual Override reset Controller) into a
   Small, Lower Cost Package
• Guards Against Unstable Processor Operation
   Resulting from Power “Brown-Out”
• Automatically Halts and Restarts an Out-of
   Control Microprocessor
• Output can be Wire-ORed, or Hooked to Manual
   reset push-button Switch
• Space-Saving 3-Pin TO-92 or SOT-223 Package

Applications:
• All Microprocessor-Based Systems
• Battery Powered Computers and Controllers
• Automotive Systems
• Intelligent Instruments
• Critical Processor Monitoring
• Embedded Controllers

Description : System reset (with built-in watchdog timer)

Outline
This IC functions in a variety of CPU systems and other logic systems to generate a reset signal and reset the system accurately during momentary interruption or lowering of power supply voltage.
It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.

Features
1. Built-in watchdog timer
2. Low minimum operating voltage 100µA typ.
3. Low operating limit voltage Vcc=0.8V
4. watchdog stop function (RCT pin)
5. Few external parts

Applications
1. reset circuits in microcomputers, CPUs and MPUs
2. Logic circuit reset circuits
3. Microcomputer system monitoring, etc.

Description : 5-pin Voltage supervisors with Adjustable Power-On reset, Dual Voltage Monitoring or watchdog timer Capability

The ISL88011 - ISL88015 family of devices offer both fixed and/or adjustable voltage-monitoring that combine popular functions such as Power On reset control, watchdog timer, Supply Voltage Supervision, and Manual reset assertion in a small 5-pin SOT23 package.

Features
• Single/Dual Voltage Monitoring supervisors
• Fixed-Voltage Options Allow Precise Monitoring of +2.5V, +3.0V, +3.3V, and +5.0V Power Supplies
• Dual supervisor Has One Fixed Voltage Input and Another That is User-Adjustable Down to 0.6V.
• Both RST and RST Outputs Available
• Adjustable POR Timeout Delay Options
watchdog timer with 1.6sec Normal and 51sec Startup Timeout Durations
• Manual reset Input on All Devices
reset Signal Valid Down to VDD = 1V
• Accurate ±1.5% Voltage Threshold
• Immune to Power-Supply Transients
• Ultra Low 5.5µA Supply Current
• Small 5-pin SOT-23 Pb Free package
• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications
• Process Control Systems
• Intelligent Instruments
• Embedded Control Systems
• Computer Systems
• Critical µP and µC Power Monitoring
• Portable/Battery-Powered Equipment
• PDA and Handheld PC Devices

Mitsumi
Mitsumi
Description : System reset (with built-in watchdog timer)

Outline

This IC functions in a variety of CPU systems and other logic systems to generate a reset signal and reset the system accurately during momentary interruption or lowering of power supply voltage.

It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.



Features

1. Built-in watchdog timer

2. Low minimum operating voltage VCC=0.8V typ.

3. Both positive and negative logic reset output can be extracted

4. Accurate detection of drop in power supply voltage

5. Detection voltage has hysteresis

6. Few external parts 1 capacitor

7. timer monitoring time can be varied by using an external resistor



Applications

Microcomputer system monitoring, etc.



 


Part Name(s) : MM1142XF MM1142
Mitsumi
Mitsumi
Description : System reset (with built-in watchdog timer)

Outline
This IC was developed to drive low voltage batteries, and has a watchdog timer with built-in microcomputer reset voltage detection circuit and low battery detection circuit.
A single reference voltage is used for low battery voltage detection and microcomputer reset voltage detection, so detection voltage difference is uniform (.=. 0.2V). Further, there is a built-in watchdog timer for operation diagnosis, which prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.

Features
1. Accurate voltage drop detection voltage
    1. Low battery detection 2.2V±3%
    2. Power supply voltage detection 2.0V±3%
    3. Detection voltage error 0.2V±20mV 1-2
    4. Hysteresis both 50mV typ.
2. watchdog function stop pin (can be made to function only as reset IC during VCC rise)
3. Low current consumption 150µA typ.

Applications
1. 2V cordless telephones
2. Portable communication equipment
3. Various types of small, handy equipment

Mitsumi
Mitsumi
Description : System reset (with built-in watchdog timer)

Outline

This IC functions in a variety of CPU systems and other logic systems to generate a reset signal and reset the system accurately during momentary interruption or lowering of power supply voltage.

It also has a built-in watchdog timer for operation diagnosis. This prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.



Features

1. Built-in watchdog timer

2. Low minimum operating voltage VCC=0.8V typ.

3. Both positive and negative logic reset output can be extracted

4. Accurate detection of drop in power supply voltage

5. Detection voltage has hysteresis

6. Few external parts 1 capacitor



Applications

  Microcomputers



 


Mitsumi
Mitsumi
Description : System reset (with built-in watchdog timer)

Outline
These ICs were developed to drive low voltage batteries, and have a watchdog timer with built-in microcomputer reset voltage detection circuit and low battery detection circuit.
A single reference voltage is used for low battery voltage detection and microcomputer reset voltage detection, so detection voltage difference is uniform (.=. 0.2V). Further, there is a built-in watchdog timer for operation diagnosis, which prevents the system from running wild by generating an intermittent reset pulse during system mis-operation.

Features
1. Accurate voltage drop detection voltage
    1. Low battery detection 3.4V±3%
    2. Power supply voltage detection 3.2V±3%
    3. Detection voltage error 0.2V±20mV 1-2
    4. Hysteresis Both 50mV typ.
2. watchdog function stop pin (can be made to function only as reset IC during VCC rise)
3. Low current consumption 150µA typ.

Applications
1. 3V cordless telephones
2. Various types of small, handy equipment

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