MC68HC705CT4 Datasheet, PDF (25/152 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
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,
MC68HC705CT4 — Rev. 2.0
MOTOROLA
General Release Specification
Memory
25
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