MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 249

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

16.1 Contents
16.2 Introduction
MC68HC908JL8
MOTOROLA
Technical Data – MC68HC908JL8
—
Section 16. Computer Operating Properly (COP)
Rev. 2.0
16.2
16.3
16.4
16.4.1
16.4.2
16.4.3
16.4.4
16.4.5
16.4.6
16.4.7
16.5
16.6
16.7
16.8
16.8.1
16.8.2
16.9
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 CONFIG1 register.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . .254
Computer Operating Properly (COP)
ICLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . .252
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 252
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
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Technical Data
249