M68HC08 datasheet(71/332 Pages) FREESCALE

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MC68HC908JB16 — Rev. 1.1

Technical Data

Freescale Semiconductor

Configuration Register (CONFIG)

Technical Data — MC68HC908JB16

Section 5. Configuration Register (CONFIG)

5.1 Contents

5.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5.3

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

5.4

Configuration Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

5.2 Introduction

This section describes the configuration register, CONFIG. The

configuration register enables or disables these options:

•

Low voltage inhibit (LVI) module control and voltage trip point

selection

•

USB reset

•

Stop mode recovery time (2048 or 4096 OSCDCLK cycles)

•

COP timeout period (218 – 24 or 213 – 24 OSCDCLK cycles)

•

STOP instruction

•

Computer operating properly module (COP)

5.3 Functional Description

The configuration register is used in the initialization of various options.

The configuration register can be written once after each reset. All of the

configuration register bits are cleared during reset. Since the various

options affect the operation of the MCU, it is recommended that this

located at $001F. The configuration register may be read at anytime.

M68HC08 Datasheet(PDF) 71 Page - Freescale Semiconductor, Inc