s908qc16vdse Freescale Semiconductor, Inc, s908qc16vdse Datasheet - Page 63
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s908qc16vdse
Manufacturer Part Number
s908qc16vdse
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908QC16VDSE.pdf
(274 pages)
- Current page: 63 of 274
- Download datasheet (4Mb)
Chapter 5
Computer Operating Properly (COP)
5.1 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 clearing the COP counter periodically. The COP module can be disabled through the COPD bit in the
configuration 1 (CONFIG1) register.
5.2 Functional Description
Freescale Semiconductor
1. See
INTERNAL RESET SOURCES
(COPRS FROM CONFIG1)
Chapter 14 System Integration Module (SIM)
COPD (FROM CONFIG1)
STOP INSTRUCTION
COPEN (FROM SIM)
COP RATE SELECT
COPCTL WRITE
COPCTL WRITE
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 4
BUSCLKX4
RESET
(1)
Figure 5-1. COP Block Diagram
COP CLOCK
12-BIT SIM COUNTER
COP COUNTER
for more details.
CLEAR
6-BIT COP COUNTER
COP MODULE
SIM MODULE
RESET STATUS REGISTER
SIM RESET CIRCUIT
63
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