mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 329
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mc68hc908ld64
Manufacturer Part Number
mc68hc908ld64
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908LD64.pdf
(362 pages)
- Current page: 329 of 362
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22.1 Contents
22.2 Introduction
MC68HC908LD64
Freescale Semiconductor
Data Sheet — MC68HC908LD64
Section 22. Computer Operating Properly (COP)
—
Rev. 3.0
22.2
22.3
22.4
22.4.1
22.4.2
22.4.3
22.4.4
22.4.5
22.4.6
22.4.7
22.4.8
22.5
22.6
22.7
22.8
22.8.1
22.8.2
22.9
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.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .330
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 334
Computer Operating Properly (COP)
OSCXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
Power-On Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 332
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .334
Data Sheet
329
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