Motorola MC68HC908AB32 User Manual

MC68HC908AB32 — Rev. 1.0 Technical Data
MOTOROLA Keyboard Interrupt Module (KBI) 345
Technical Data — MC68HC908AB32
Section 19. Keyboard Interrupt Module (KBI)
19.1 Contents
19.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .345
19.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346
19.4 I/O Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346
19.5 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
19.5.1 Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . .349
19.5.2 Keyboard Status and Control Register. . . . . . . . . . . . . . . .349
19.5.3 Keyboard Interrupt Enable Register. . . . . . . . . . . . . . . . . .351
19.6 Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351
19.7 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .351
19.8 Keyboard Module During Break Interrupts . . . . . . . . . . . . . . .352
19.2 Introduction
The keyboard interrupt module (KBI) provides five independently
maskable external interrupts which are accessible via PTG0–PTG2 and
PTH0–PTH1 pins.

Motorola MC68HC908AB32 Specifications

General

Brand	Motorola
Model	MC68HC908AB32
Category	Controller
Language	English