MC68HC908GT16 Datasheet, PDF (189/412 Pages) Motorola, Inc – Microcontrollers

Technical Data — MC68HC908GT16 • MC68HC908GT8
Section 12. External Interrupt (IRQ)
12.1 Contents
12.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
12.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
12.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
12.5 IRQ1 Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
12.6 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . . 193
12.7 IRQ Status and Control Register . . . . . . . . . . . . . . . . . . . . . . 193
12.2 Introduction
The IRQ (external interrupt) module provides a maskable interrupt input.
12.3 Features
Features of the IRQ module include:
• A dedicated external interrupt pin (IRQ1)
• IRQ interrupt control bits
• Hysteresis buffer
• Programmable edge-only or edge and level interrupt sensitivity
• Automatic interrupt acknowledge
• Internal pullup resistor
MC68HC908GT16 • MC68HC908GT8 — Rev. 2
MOTOROLA
External Interrupt (IRQ)
Technical Data
189