HC705P6AGRSSLASHD datasheet(23/134 Pages) NXP

23 / 134 page

MC68HC705P6A — Rev. 1.0

General Release Specification

Memory

General Release Specification — MC68HC705P6A

Section 2. Memory

2.1 Contents

2.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.3

User Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

2.4

Bootloader Mode Memory Map . . . . . . . . . . . . . . . . . . . . . . . .24

2.5

Input/Output and Control Registers . . . . . . . . . . . . . . . . . . . . .25

2.6

RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

2.7

EPROM/ROM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

2.8

Mask Option Register (MOR) $1EFF–$1F00 . . . . . . . . . . . . . .28

2.9

COP Clear Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

2.2 Introduction

The MC68HC705P6A utilizes 13 address lines to access an internal

memory space covering 8 Kbytes. This memory space is divided into

I/O, RAM, ROM, and EPROM areas.

2.3 User Mode Memory Map

When the MC68HC705P6A is in the user mode, the 32 bytes of I/O, 176

bytes of RAM, 4608 bytes of user EPROM, 48 bytes of user page zero

EPROM, 239 bytes of bootloader ROM, and 16 bytes of user vectors

EPROM are all active as shown in Figure 2-1.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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