參數(shù)資料
型號: MC68HC05C9AP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 109/162頁
文件大小: 1093K
代理商: MC68HC05C9AP
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Resets
Advance Information
MC68HC05C9A Rev. 5.0
50
Resets
MOTOROLA
5.5 Computer Operating Properly (COP) Reset
This device includes a watchdog COP feature which guards against
program run-away failures. A timeout of the COP timer generates a COP
reset. The COP watchdog is a software error detection system that
automatically times out and resets the MCU if not cleared periodically by
a program sequence.
The COP is controlled with two registers, one to reset the COP timer and
the other to enable and control COP and clock monitor functions.
Figure 5-3 shows a block diagram of the COP.
Figure 5-3. COP Block Diagram
÷2 ÷2 ÷2 ÷2 ÷2 ÷2 ÷2 ÷2
÷4
÷2
213
215
217
219
221
COPRST
CM0
CM1
16-BIT TIMER SYSTEM
INTERNAL
CPU
CLOCK
COP
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