MC68HC908JK3EMP MOTOROLA [Motorola, Inc], MC68HC908JK3EMP Datasheet - Page 171

• Manufacturer Part Number: MC68HC908JK3EMP
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

14.1 Contents
14.2 Introduction
14.3 Features
MC68H(R)C908JL3E/JK3E/JK1E
MOTOROLA
Technical Data – MC68H(R)C908JL3E/JK3E/JK1E
Section 14. Keyboard Interrupt Module (KBI)
14.2
14.3
14.4
14.4.1
14.4.2
14.4.3
14.5
14.5.1
14.5.2
14.6
The keyboard interrupt module (KBI) provides seven independently
maskable external interrupts which are accessible via PTA0–PTA6 pins.
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
Rev. 2.0
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .177
Keyboard Module During Break Interrupts . . . . . . . . . . . . . . .177
Keyboard Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Keyboard Status and Control Register. . . . . . . . . . . . . . . . 175
Keyboard Interrupt Enable Register . . . . . . . . . . . . . . . . . . 176
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Keyboard Interrupt Module (KBI)
Technical Data
171