HC08KL8GRSSLASHD datasheet(53/256 Pages) NXP

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MC68HC08KL8 — Rev. 2.0

General Release Specification

Mask Option Register (MOR)

General Release Specification — MC68HC08KL8

Section 5. Mask Option Register (MOR)

5.1 Contents

5.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

5.3

Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

5.2 Introduction

This section describes the mask options and the mask option register

(MOR). The mask options are hard-wired connections specified at the

same time as the ROM code, which allow the user to customize the

MCU. The MOR controls the enable or disable of the following functions:

•

USB regulator bypass

•

ROM security1

•

Stop mode recovery time (32 or 4096 CGMXCLK cycles)

•

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

•

STOP instruction

•

Operation of the computer operating properly module (COP)

1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or

copying the ROM difficult for unauthorized users.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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