HC05RC17GRSSLASHD datasheet(39/128 Pages) NXP

39 / 128 page

MC68HC05RC17 — Rev. 2.0

General Release Specification

Interrupts

General Release Specification — MC68HC05RC17

Section 4. Interrupts

4.1 Contents

4.2

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

4.3

CPU Interrupt Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.4

Reset Interrupt Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.5

Software Interrupt (SWI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.6

Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

4.7

External Interrupt (IRQ/Port B Keyscan). . . . . . . . . . . . . . . . . .43

4.8

External Interrupt Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

4.9

Carrier Modulator Transmitter Interrupt (CMT) . . . . . . . . . . . . .44

4.10 Core Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

4.2 Introduction

The MCU can be interrupted four different ways:

1. Non-maskable software interrupt instruction (SWI)

2. External asynchronous interrupt (IRQ/port B keyscan)

3. Internal carrier modulator transmitter interrupt

4. Internal core timer interrupt

Freescale Semiconductor, Inc.

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Go to: www.freescale.com

HC05RC17GRS/D Datenblatt(PDF) 39 Page - NXP Semiconductors