XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 207
XC68HC08KH12
Manufacturer Part Number
XC68HC08KH12
Description
MICROCONTROLLER
Manufacturer
Motorola
Datasheet
1.XC68HC08KH12.pdf
(262 pages)
- Current page: 207 of 262
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Advance Information — MC68HC(7)08KH12
13.1 Contents
13.2 Introduction
MC68HC(7)08KH12
MOTOROLA
Section 13. Computer Operating Properly (COP)
—
Rev. 1.0
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
13.5
13.6
13.7
13.8
13.8.1
13.8.2
13.9
This section describes the computer operating properly module, 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 periodically clearing the COP counter.
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
COP Control Register (COPCTL) . . . . . . . . . . . . . . . . . . . . . . 211
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 212
Computer Operating Properly (COP)
CGMXCLK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Reset Vector Fetch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
COPD (COP Disable) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
COPRS (COP Rate Select). . . . . . . . . . . . . . . . . . . . . . . . 210
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
Advance Information
207
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