參數(shù)資料
型號: MC68HC08KH12A
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 141/178頁
文件大?。?/td> 925K
代理商: MC68HC08KH12A
MC68HC08KH12A Data Sheet, Rev. 1.1
Freescale Semiconductor
141
Chapter 13
Computer Operating Properly (COP)
13.1 Introduction
This section describes the computer operating properly module, a free-running counter that generates a
reset if allowed to overflow. The COP module helps software recover from runaway code. Prevent a COP
reset by periodically clearing the COP counter.
13.2 Functional Description
Figure 13-1
shows the structure of the COP module.
Figure 13-1. COP Block Diagram
COPCTL WRITE
CGMXCLK
RESET VECTOR FETCH
RESET CIRCUIT
RESET STATUS REGISTER
INTERNAL RESET SOURCES
12-BIT SIM COUNTER
C
6-BIT COP COUNTER
COP DISABLE
RESET
COPCTL WRITE
CLEAR
COP MODULE
COPEN (FROM SIM)
COP COUNTER
COP CLOCK
C
STOP INSTRUCTION
(COPD FROM CONFIG)
COP RATE SEL
(COPRS FROM CONFIG)
C
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