HC705CT4GRSSLASHD datasheet(25/152 Pages) NXP

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MC68HC705CT4 — Rev. 2.0

General Release Specification

MOTOROLA

Memory

General Release Specification — MC68HC705CT4

Section 2. Memory

2.1 Contents

2.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.3

Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.4

Eraseable Programmable Read-Only

Memory (EPROM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

2.5

Random-Access Memory (RAM) . . . . . . . . . . . . . . . . . . . . . . .26

2.2 Introduction

This section describes the organization of the on-chip memory. The

MC68HC705CT4 8-Kbyte memory map is shown in Figure 2-1 and the

input/output (I/O) registers in Figure 2-2.

2.3 Memory Map

The MC68HC705CT4 has an 8-Kbyte memory map consisting of user

eraseable programmable read-only memory (EPROM), random-access

memory (RAM), bootloader ROM, and I/O.

2.4 Eraseable Programmable Read-Only Memory (EPROM)

The user EPROM consists of 5120 bytes of EPROM located from $0B00

to $1EFF and 16 bytes of user vectors located from $1FF0 to $1FFF.

The bootloader ROM and vectors are located from $1F01 to $1FEF.

Twelve of the user vectors, $1FF4–$1FFF, are dedicated to reset and

interrupt vectors. The four remaining locations — $1FF0, $1FF1, $1FF2,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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