68HC705JB3 datasheet(127/134 Pages) FREESCALE

127 / 134 page

November 5, 1998

GENERAL RELEASE SPECIFICATION

MC68HC05JB3

MOTOROLA

REV 1

A-1

APPENDIX A

MC68HC705JB3

This

appendix

describes

the

MC68HC705JB3,

the

emulation

part

for

MC68HC05JB3. The

entire

MC68HC05JB3

data

sheet

applies

the

MC68HC705JB3, with exceptions outlined in this appendix.

A.1

INTRODUCTION

The MC68HC705JB3 is an EPROM version of the MC68HC05JB3, and is avail-

able for user system evaluation and debugging. The MC68HC705JB3 is function-

ally identical to the MC68HC05JB3 with the exception of the 2560 bytes user

ROM is replaced by 2560 bytes user EPROM. Also, the mask options available on

the MC68HC05JB3 are implemented using the Mask Option Register (MOR) in

the MC68HC705JB3.

The MC68HC705JB3 is not available in the 20-pin SOIC package.

A.2

MEMORY

The MC68HC705JB3 memory map is shown in Figure A-1.

A.3

MASK OPTION REGISTER (MOR)

The Mask Option Register (MOR) is a byte of EPROM used to select the features

controlled by mask options on the MC68HC05JB3. In order to program this regis-

ter the MORON bit in PCR need to be set to “1” before doing the EPROM pro-

gramming process.

COPEN – COP Enable

1 =

COP watchdog function disabled.

0 =

COP watchdog function enabled.

IRQTRIG – IRQ, PA0-PA3 Interrupt Option

1 =

Edge-triggered only.

0 =

Edge-and-level-triggered.

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

MOR

COPEN

IRQTRIG PULLREN PAINTEN

OSCDLY

LVREN

$01FF

reset:

00111111

Freescale Semiconductor, Inc.

For More Information On This Product,

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