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參數(shù)資料
| 型號(hào)： | AN2104 |
| 廠商： | 飛思卡爾半導(dǎo)體(中國)有限公司 |
| 英文描述： | Using Background Debug Mode for the M68HC12 Family |
| 中文描述： | 使用的M68HC12家庭背景調(diào)試模式 |
| 文件頁數(shù)： | 11/20頁 |
| 文件大小： | 414K |
| 代理商： | AN2104 |
Application Note
Background Debug Mode Application Examples
AN2104
11
When in normal operating mode, another normal operating mode
can be accessed, but this can be done only once.
To change to the normal operating mode, when the part is in
special operating mode, a 1 (one) must be written twice to the
SMODN bit in the mode register.
When the part comes up in special single-chip mode, the BDM is
enabled and active.
When the part comes up in special single-chip mode, it accesses
the BDM ROM, not the normal memory mapped locations at
$FF00–$FFFF.
To perform hardware commands, the BDM does not need to be
active (see
Table 1
).
To perform firmware commands, the BDM must be enabled and
active (see
Table 2
).
The BDM does not operate in stop mode.
Background Debug Mode Application Examples
Two BDM application examples are given here in a step-by-step format.
In-Circuit
Programming
of Internal FLASH
This application example of the BDM explains how to perform in-circuit
programming of the internal FLASH memory of an MC68HC912B32
using P&E Microcomputer Systems’ Cable12 POD and software (see
Figure 1
). The target board for this example is the M68EVB912B32
evaluation board.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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