MC68HC908QY2 MOTOROLA [Motorola, Inc], MC68HC908QY2 Datasheet - Page 14

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MC68HC908QY2

Manufacturer Part Number
MC68HC908QY2
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet

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Table of Contents
14
MC68HC908QY4•MC68HC908QT4•MC68HC908QY2•MC68HC908QT2•MC68HC908QY1•MC68HC908QT1
14.1
14.2
14.3
14.4
14.4.1
14.4.2
14.4.3
14.4.4
14.5
14.6
14.7
15.1
15.2
15.3
15.4
15.4.1
15.4.2
15.4.3
15.4.4
15.4.5
15.4.6
15.4.7
15.5
15.6
15.7
15.8
15.8.1
15.8.2
15.9
Section 15. Computer Operating Properly (COP)
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
Keyboard Module During Break Interrupts . . . . . . . . . . . . . . . 187
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
COP Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
COP Module During Break Mode . . . . . . . . . . . . . . . . . . . . . . 193
Section 14. Keyboard Interrupt Module (KBI)
Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Keyboard Status and Control Register. . . . . . . . . . . . . . . . 182
Keyboard Interrupt Enable Register . . . . . . . . . . . . . . . . . . 184
Auto Wake-up Interrupt Request . . . . . . . . . . . . . . . . . . . . 185
BUSCLKX4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191
COPCTL Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .191
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
COPD (COP Disable). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
COPRS (COP Rate Select) . . . . . . . . . . . . . . . . . . . . . . . . 192
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193
Table of Contents
MOTOROLA

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