HC705CT4GRSSLASHD datasheet(35/152 Pages) NXP

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MC68HC705CT4 — Rev. 2.0

General Release Specification

MOTOROLA

Interrupts

General Release Specification — MC68HC705CT4

Section 4. Interrupts

4.1 Contents

4.2

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

4.3

CPU Interrupt Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

4.4

Reset Interrupt Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

4.5

Software Interrupt (SWI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

4.6

Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

4.7

External Interrupt (IRQ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

4.8

External Interrupt Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.9

16-Bit Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.10

SSI Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

4.11

Core Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.12

Comparator 3 Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

4.2 Introduction

The MCU can be interrupted seven different ways:

1. Nonmaskable software interrupt instruction (SWI)

2. External asynchronous interrupt (IRQ)

3. External interrupt via IRQ on PC0–PC7

4. Internal 16-bit timer interrupt (TIMER)

5. Internal synchronous serial interface (SSI) interrupt

6. Internal core timer interrupt

7. Comparator 3

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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