MC68HC08AZ32A Datasheet, PDF (373/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68HC08AZ32A
Section 21. Keyboard Module (KBD)
21.1 Contents
21.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373
21.3 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374
21.4 Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .374
21.5 Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . .377
21.6 Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
21.6.1 Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
21.6.2 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378
21.7 Keyboard Module During Break Interrupts . . . . . . . . . . . .378
21.8 I/O Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 379
21.8.1 Keyboard Status and Control Register . . . . . . . . . . . . . 379
21.8.2 Keyboard Interrupt Enable Register. . . . . . . . . . . . . . . . 380
21.2 Introduction
The keyboard interrupt module (KBD) provides five independently
maskable external interrupt pins.
MC68HC08AZ32A — Rev 1.0
MOTOROLA
Keyboard Module (KBD)
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Technical Data
373