MC68HC908AP16CFA MOTOROLA [Motorola, Inc], MC68HC908AP16CFA Datasheet - Page 153

• Manufacturer Part Number: MC68HC908AP16CFA
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

10.1 Introduction
10.2 Features
MC68HC908AP Family — Rev. 2.5
MOTOROLA
Data Sheet – MC68HC908AP Family
This section describes the monitor ROM (MON) and the monitor mode
entry methods. The monitor ROM allows complete testing of the MCU
through a single-wire interface with a host computer. Monitor mode entry
can be achieved without use of the higher test voltage, V
vector addresses $FFFE and $FFFF are blank, thus reducing the
hardware requirements for in-circuit programming.
In addition, to simplify user coding, routines are also stored in the
monitor ROM area for FLASH memory program /erase and EEPROM
emulation.
Features of the monitor ROM include:
1. No security feature is absolutely secure. However, Motorola’s strategy is to make reading or
copying the FLASH difficult for unauthorized users.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Normal user-mode pin functionality
Standard mark/space non-return-to-zero (NRZ) communication
FLASH memory security feature
Enhanced PLL (phase-locked loop) option to allow use of external
One pin dedicated to serial communication between monitor ROM
and host computer
with host computer
Execution of code in RAM or FLASH
FLASH memory programming interface
32.768-kHz crystal to generate internal frequency of 2.4576 MHz
Go to: www.freescale.com
Section 10. Monitor ROM (MON)
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TST
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Data Sheet
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