Microchip TC1279 Manual

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Features

• Multiple Trip voltage points range from 1.75-4.72V

• Industry standard pin-outs:

– SC-70

– SOT-23

– SOT-143

– T0-92

– SOIC

– PDIP

• Extended Industrial Temperature (-40°C to +125°C)

• 9 parts include Watchdog Timers

Related Application Notes

AN595 Improving the Susceptibility of an Application to

ESD

AN598 Plastic Packaging and the Effects of Surface Mount

Soldering Techniques

AN686 Understanding and Using Supervisory Circuits

Microcontroller Supervisor Family

Product Summary

Microchip’s extensive family of low-cost, precision system

supervisors and reset circuits support microcontrollers,

ASICs, digital signal processors and custom chip sets. The

family offers a large variety of reset trip points, output types

and package options to cover most application requirements.

The breadth of the product line enables Microchip

supervisors to cross to virtually all competitors supervisory

reset products. The devices are functionally and pinout

comparable to products from other analog suppliers.

Noisy environments, unreliable power or battery power in

many microcontroller applications may create a variety of

system-level problems that can be eliminated with power-on

reset or brown-out detect functions found on the supervisors.

The power-on reset devices are designed to hold the

microcontroller in reset until the supply voltage reaches a

predetermined operating level and stabilizes.

This supervisor family protects from brown-out conditions

occurring as a result of supply voltage drops below the

safe operating level. It eliminates a slowly decaying power

supply which causes the microcontroller to begin executing

instructions without enough voltage to sustain its SRAM,

producing indeterminate results, and helps prevent a

runaway system or helps back up critical data during power

ﬂ uctuations.

Microchip offers supervisors in 3-pin SC-70, 3/5-pin

SOT-23, TO-92, 4-pin SOT-143, 8-pin PDIP and 8/16-pin

SOIC packages in various pin conﬁ gurations. It is ideal

for embedded control applications such as hand-held

instrumentation, telephone hand sets and other battery

powered operations.

Featured New Products

Device

Reset A Reset B

WDI Input MR Input V Range I (CC DD

A) Reset DelayType

Pull-up

Resistor

Active

Level Type

Active

Level

MCP1316 Push-Pull

–

Low

– –

Yes Yes 1.0-5.5V 5 200 ms

MCP1316M Open-Drain Internal Low

– –

Yes Yes 1.0-5.5V 5 200 ms

MCP1317 Push-Pull

–

High

– –

Yes Yes 1.0-5.5V 5 200 ms

MP1318 Push-Pull

–

Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1318M Open-Drain Internal Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1319 Push-Pull

–

Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

MCP1319M Open-Drain Internal Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

MCP1320 Open-Drain External Low – – Yes Yes 1.0-5.5V 5 200 ms

MCP1321 Open-Drain External Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1322 Open-Drain External Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

Microcontroller Supervisor Family

Device

Reset A Reset B

WDI Input MR Input V Range I (CC DD

A) Reset DelayType

Pull-up

Resistor

Active

Level Type

Active

Level

MCP100 Push-Pull – Low – – – – 1.0-5.5V 32 350 ms

MCP101 Push-Pull – High – – – – 1.0-5.5V 33 350 ms

MCP102 Push-Pull – Low – – – – 1.0-5.5V 1 120 ms

MCP103 Open-Drain External Low – – – – 1.0-5.5V 1 120 ms

MCP120 Open-Drain External Low – – – – 1.0-5.5V 34 350 ms

TC1232 Open-Drain External Low/High – – Yes – 4.5-5.5V 50 250 ms

TC1270 Push-Pull – Low – – – Yes 1.2-5.5V 7 140 ms

TC1271 Push-Pull – High – – – Yes 1.2-5.5V 7 140 ms

TC1272 Push-Pull – Low – – – – 1.2-5.5V 30 100 ms

TC1273 Open-Drain – Low – – – – 1.2-5.5V 30 100 ms

TC1274 Open-Drain – Low – – – – 1.2-5.5V 30 100 ms

TC1275 Push-Pull – Low – – – – 1.2-5.5V 28 100 ms

TC1276 Open-Drain – Low – – – – 1.2-5.5V 28 100 ms

TC1277 Push-Pull – Low – – – – 1.2-5.5V 28 100 ms

TC1278 Open-Drain – High – – – – 1.2-5.5V 30 100 ms

TC1279 Open-Drain – Low – – – – 1.2-5.5V 30 100 ms

MCP130 Open-Drain Internal Low – – – – 1.0-5.5V 35 350 ms

MCP131 Open-Drain Internal Low – – – – 1.0-5.5V 1 120 ms

MCP1316 Push-Pull – Low – – Yes Yes 1.0-5.5V 5 200 ms

MCP1316M Open-Drain Internal Low – – Yes Yes 1.0-5.5V 5 200 ms

MCP1317 Push-Pull – High – – Yes Yes 1.0-5.5V 5 200 ms

MP1318 Push-Pull – Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1318M Open-Drain Internal Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1319 Push-Pull – Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

MCP1319M Open-Drain Internal Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

MCP1320 Open-Drain External Low – – Yes Yes 1.0-5.5V 5 200 ms

MCP1321 Open-Drain External Low Push-Pull High Yes No 1.0-5.5V 5 200 ms

MCP1322 Open-Drain External Low Push-Pull High No Yes 1.0-5.5V 5 200 ms

TC32M Open-Drain – Low – – Yes 4.5-5.5V 50 500 ms

TCM809 Open-Drain – Low – – – – 1.2-5.5V 17 140 ms

TCM810 Push-Pull – High – – – – 1.2-5.5V 17 140 ms

TCM811 Push-Pull – Low – – – – 1.2-5.5V 6 140 ms

TCM812 Push-Pull – High – – – – 1.2-5.5V 6 140 ms

Additional Information:

• Microchip’s web site: www.microchip.com

• Product Selector Guide, DS00148

• Stand-Alone Analog and Interface Solutions, DS21060

• Microchip’s Technical Library CD-ROM, DS00161

• Analog & Interface Families Data Book 2002, DS00207

Microchip Technology Inc. • 2355 W. Chandler Blvd. • Chandler, AZ 85224-6199

Information subject to change. The Microchip name and logo, the Microchip logo, PIC and PICmicro are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. All