MEC1322 datasheet(218/456 Pages) MICROCHIP

No. de pieza	MEC1322

Descripción Electrónicos	Keyboard and Embedded Controller for Notebook PC

PDF	456 Pages

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Fabricante Electrónico	MICROCHIP [Microchip Technology]

Página de inicio	http://www.microchip.com

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MEC1322

DS00001719D-page 218

 2014 - 2015 Microchip Technology Inc.

16.0 WATCHDOG TIMER (WDT)

16.1

Introduction

The function of the Watchdog Timer is to provide a mechanism to detect if the internal embedded controller has failed.

When enabled, the Watchdog Timer (WDT) circuit will generate a WDT Event if the user program fails to reload the WDT

within a specified length of time known as the WDT Interval.

16.2

References

No references have been cited for this chapter.

16.3

Terminology

There is no terminology defined for this chapter.

16.4

Interface

This block is designed to be accessed internally via a registered host interface or externally via the signal interface.

16.5

Host Interface

The registers defined for the Watchdog Timer (WDT) are accessible by the embedded controller as indicated in Section

16.8, "EC-Only Registers". All registers accesses are synchronized to the host clock and complete immediately. Regis-

ter reads/writes are not delayed by the 32KHz_Clk.

FIGURE 16-1:

I/O DIAGRAM OF BLOCK

Watchdog Timer (WDT)

Clock Inputs

WDT Event

Resets

Host Interface

MEC1322 Datasheet(PDF) 218 Page - Microchip Technology