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See Technical Specifications

TC32MCDB

Supervisor Open Drain or Open Collector 1 Channel SOT-223-3

Manufacturer:

Microchip
Mfr.Part #:

TC32MCDB
Datasheet:

TC32MCDB Datasheet (PDF)
Type:

Voltage Supervisory
Mounting Style:

SMD/SMT
Threshold Voltage:

4.5 V
Number of Inputs Monitored:

1 Input
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TC32MCDB 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.

Key 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

Specifications

Product Category	Supervisory Circuits	Type	Voltage Supervisory
Mounting Style	SMD/SMT	Threshold Voltage	4.5 V
Number of Inputs Monitored	1 Input	Output Type	Active Low, Open Drain
Manual Reset	No Manual Reset	Watchdog Timers	Watchdog
Battery Backup Switching	No Backup	Reset Delay Time	700 ms
Supply Voltage - Max	5.5 V	Minimum Operating Temperature	0 C
Maximum Operating Temperature	+ 70 C	Series	TC32M
Chip Enable Signals	No Chip Enable	Height	1.6 mm
Length	6.5 mm	Moisture Sensitive	Yes
Operating Supply Current	200 uA	Output Current	2 mA
Overvoltage Threshold	4.5 V	Power Fail Detection	No
Product Type	Supervisory Circuits	Factory Pack Quantity	78
Subcategory	PMIC - Power Management ICs	Supply Voltage - Min	4.5 V
Undervoltage Threshold	4.25 V	Width	3.5 mm
Unit Weight	0.008818 oz