MC68HC08JK1 Datasheet, PDF (39/198 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68H(R)C08JL3
Section 4. Read-Only Memory (ROM)
4.1 Contents
4.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
4.2 Introduction
This section describes the 4096 or 1536 bytes of read-only memory
(ROM) and 48 bytes of user vectors.
4.3 Functional Description
These addresses are user ROM locations:
$EC00–$FBFF; user memory, 4096 bytes on MC68H(R)C08JL3/JK3.
$F600–$FBFF; user memory, 1536 bytes on MC68H(R)C08JK1.
NOTE:
$FFD0–$FFFF (These locations are reserved for user-defined interrupt
and reset vectors.)
A security feature prevents viewing of the ROM contents.¹
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the ROM contents difficult for unauthorized users.
MC68H(R)C08JL3 — Rev. 4
MOTOROLA
Read-Only Memory (ROM)
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Technical Data
39