MC68HC08AZ60A Datasheet, PDF (177/480 Pages) Motorola, Inc – Microcontrollers

Advance Information — MC68HC08AZ60A
Section 12. Monitor ROM (MON)
12.1 Contents
12.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
12.3 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
12.4 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
12.4.1 Entering monitor mode . . . . . . . . . . . . . . . . . . . . . . . . . .180
12.4.2 Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
12.4.3 Echoing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
12.4.4 Break Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
12.4.4.1 Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
12.4.5 Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
12.4.6 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
12.2 Introduction
This section describes the monitor ROM (MON08). The monitor ROM
allows complete testing of the MCU through a single-wire interface with
a host computer.
12.3 Features
Features of the monitor ROM include the following:
• Normal User-Mode Pin Functionality
• One Pin Dedicated to Serial Communication Between Monitor
ROM and Host Computer
• Standard Mark/Space Non-Return-to-Zero (NRZ) Communication
with Host Computer
• Up to 28.8K Baud Communication with Host Computer
MC68HC08AZ60A — Rev 0.0
MOTOROLA
Monitor ROM (MON)
Advance Information
177