MC68HC908KX8 Datasheet, PDF (165/310 Pages) Motorola, Inc – Microcontrollers

Technical Data — MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8
Section 12. External Interrupt (IRQ)
12.1 Contents
12.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
12.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
12.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
12.5 IRQ1 Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
12.6 IRQ Status and Control Register . . . . . . . . . . . . . . . . . . . . . . 168
12.2 Introduction
The external interrupt (IRQ) module provides a maskable interrupt input.
12.3 Features
Features of the IRQ module include:
• A dedicated external interrupt pin (IRQ1)
• IRQ1 interrupt control bits
• Internal pullup resistor
• Hysteresis buffer
• Programmable edge-only or edge- and level-interrupt sensitivity
• Automatic interrupt acknowledge
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
MOTOROLA
External Interrupt (IRQ)
Technical Data
165