MC68HC08JK1 Datasheet, PDF (155/198 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Technical Data — MC68H(R)C08JL3
Section 14. Keyboard Interrupt Module (KBI)
14.1 Contents
14.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
14.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
14.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
14.4.1 Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
14.4.2 Keyboard Status and Control Register. . . . . . . . . . . . . . . . 159
14.4.3 Keyboard Interrupt Enable Register . . . . . . . . . . . . . . . . . . 160
14.5 Wait Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
14.6 Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
14.7 Keyboard Module During Break Interrupts . . . . . . . . . . . . . . . 161
14.2 Introduction
The keyboard interrupt module (KBI) provides seven independently
maskable external interrupts which are accessible via PTA0–PTA6 pins.
14.3 Features
Features of the keyboard interrupt module include the following:
• Seven keyboard interrupt pins with separate keyboard interrupt
enable bits and one keyboard interrupt mask
• Software configurable pull-up device if input pin is configured as
input port bit
• Programmable edge-only or edge- and level- interrupt sensitivity
• Exit from low-power modes
MC68H(R)C08JL3 — Rev. 4
MOTOROLA
Keyboard Interrupt Module (KBI)
For More Information On This Product,
Go to: www.freescale.com
Technical Data
155