MC68HC08AZ60ACFU MOTOROLA [Motorola, Inc], MC68HC08AZ60ACFU Datasheet - Page 189
MC68HC08AZ60ACFU
Manufacturer Part Number
MC68HC08AZ60ACFU
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC08AZ60ACFU.pdf
(480 pages)
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Advance Information — MC68HC08AZ60A
13.1 Contents
13.2 Introduction
MC68HC08AZ60A — Rev 0.0
MOTOROLA
Section 13. Computer Operating Properly (COP)
13.2
13.3
13.4
13.4.1
13.4.2
13.4.3
13.4.4
13.4.5
13.4.6
13.4.7
13.4.8
13.5
13.6
13.7
13.8
13.8.1
13.8.2
13.9
This section describes the computer operating properly (COP) module,
a free-running counter that generates a reset if allowed to overflow. The
COP module helps software recover from runaway code. COP resets
can be prevented by periodically clearing the COP counter.
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .190
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
COP Control Register (COPCTL). . . . . . . . . . . . . . . . . . . . . 193
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
COP Module During Break Interrupts . . . . . . . . . . . . . . . . . 194
Computer Operating Properly (COP)
CGMXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
STOP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
COPCTL Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 192
WAIT Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
STOP Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194
COPD (COP Disable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Advance Information
189
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