Freescale Semiconductor, Inc.
Computer Operating Properly Module (COP)
11.2 Introduction
The computer operating properly (COP) module contains 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.
11.3 Functional Description
12-BIT COP PRESCALER
CGMXCLK
STOP INSTRUCTION
INTERNAL RESET SOURCES
RESET VECTOR FETCH
COPCTL WRITE
RESET
RESET STATUS
REGISTER
6-BIT COP COUNTER
COPD FROM CONFIG
RESET
CLEAR COP
COUNTER
COPCTL WRITE
COPRS FROM CONFIG
Figure 11-1. COP Block Diagram
Advance Information
164
MC68HC908RFRK2
MOTOROLA
Computer Operating Properly Module (COP)
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