MC68HC08AS32 Datasheet, PDF (175/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Advance Information — MC68HC08AS32
Section 14. External Interrupt (IRQ)
14.1 Contents
14.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
14.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
14.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
14.5 IRQ Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
14.6 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . .180
14.7 IRQ Status and Control Register . . . . . . . . . . . . . . . . . . . . . .180
14.2 Introduction
This section describes the non-maskable external interrupt (IRQ) input.
14.3 Features
Features of the IRQ include:
• Dedicated external interrupt pin (IRQ)
• Hysteresis buffer
• Programmable edge-only or edge and level interrupt sensitivity
• Automatic interrupt acknowledge
MC68HC08AS32 — Rev. 3.0
MOTOROLA
External Interrupt (IRQ)
Advance Information
175