68HC705SP7 datasheet(179/230 Pages) FREESCALE

179 / 230 page

MC68HC705JJ7/MC68HC705JP7 — Rev. 3.0

General Release Specification

EPROM/OTPROM

General Release Specification — MC68HC705JJ7/MC68HC705JP7

Section 13. EPROM/OTPROM

13.1 Contents

13.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

13.3

EPROM Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

13.3.1

EPROM Programming Register (EPROG) . . . . . . . . . . . .180

13.3.2

Mask Option Register (MOR) . . . . . . . . . . . . . . . . . . . . . .181

13.3.3

EPROM Security Bit (EPMSEC) . . . . . . . . . . . . . . . . . . . .184

13.4

EPROM Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184

13.4.1

MOR Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .185

13.4.2

EPMSEC Programming. . . . . . . . . . . . . . . . . . . . . . . . . . .186

13.5

EPROM Erasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186

13.2 Introduction

This section describes how to program the 6160-byte

EPROM/OTPROM, the mask option register (MOR), and the EPROM

security bit (EPMSEC).

NOTE:

In packages with no quartz window, the EPROM functions as one-time

programmable ROM (OTPROM).

13.3 EPROM Registers

The EPROM programming register (EPROG) controls the actual

programming of the EPROM bytes and the MOR. The mask option

of this MCU. There is an additional EPROM bit (EPMSEC) located at the

COP address to provide EPROM array security.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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