MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 158

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MON
Features
Functional Description
MC68HC708XL36
158
Features of monitor mode include the following:
The monitor ROM receives and executes commands from a host.
Figure 1
communicate with a host via a standard RS-232 interface.
Simple monitor commands can access any memory address. In monitor
mode, the MCU can execute the code in RAM loaded by the host while
all MCU pins retain normal operating mode functions. All communication
between the host and the MCU is through the PA0 pin at a chosen baud
rate. A level-shifting and multiplexing interface is required between PA0
and the host. PA0 is used in a wired-OR configuration and requires a
pullup resistor.
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Freescale Semiconductor, Inc.
For More Information On This Product,
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
Execution of Code in Either RAM or EPROM
EPROM Programming
EPROM Security
shows an example circuit used to enter monitor mode and
Go to: www.freescale.com
MON
MOTOROLA
2-mon08sp_1p