MC68HC908GP32 Datasheet, PDF (177/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Freescale Semiconductor, Inc.
Technical Data – MC68HC908GP32•MC68HC08GP32
Section 12. External Interrupt (IRQ)
12.1 Contents
12.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
12.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
12.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
12.5 IRQ Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
12.6 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . .179
12.7 IRQ Status and Control Register . . . . . . . . . . . . . . . . . . . . . . 179
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 (IRQ)
• IRQ interrupt control bits
• Hysteresis buffer
• Programmable edge-only or edge and level interrupt sensitivity
• Automatic interrupt acknowledge
• Internal pullup resistor
MC68HC908GP32•MC68HC08GP32 — Rev. 6
MOTOROLA
External Interrupt (IRQ)
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Technical Data
175