MC68HC908JG16FA MOTOROLA [Motorola, Inc], MC68HC908JG16FA Datasheet - Page 291

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MC68HC908JG16FA

Manufacturer Part Number
MC68HC908JG16FA
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
17.1 Contents
17.2 Introduction
MC68HC908JG16
MOTOROLA
Technical Data — MC68HC908JG16
Section 17. Computer Operating Properly (COP)
Rev. 1.0
17.2
17.3
17.4
17.4.1
17.4.2
17.4.3
17.4.4
17.4.5
17.4.6
17.4.7
17.4.8
17.5
17.6
17.7
17.8
17.8.1
17.8.2
17.9
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 CONFIG register.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . .296
Computer Operating Properly (COP)
OSCDCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 294
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296
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Technical Data
291

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