mc68hc908jb8 Freescale Semiconductor, Inc, mc68hc908jb8 Datasheet - Page 163

• Manufacturer Part Number: mc68hc908jb8
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Technical Data — MC68HC908JB8•MC68HC08JB8•MC68HC08JT8
10.1 Contents
10.2 Introduction
MC68HC908JB8•MC68HC08JB8•MC68HC08JT8 — Rev. 2.3
Freescale Semiconductor
10.2
10.3
10.4
10.4.1
10.4.2
10.4.3
10.4.4
10.4.5
10.4.6
10.5
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 host computer. This mode is also
used for programming and erasing of FLASH memory in the MCU.
Monitor mode entry can be achieved without use of the higher voltage,
V
thus reducing the hardware requirements for in-circuit programming.
DD
+ V
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
HI
Entering Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .169
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Echoing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170
Break Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
, as long as vector addresses $FFFE and $FFFF are blank,
Monitor ROM (MON)
Section 10. Monitor ROM (MON)
Technical Data
163