MC68HC705CT4 Datasheet, PDF (35/152 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
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
MC68HC705CT4 — Rev. 2.0
MOTOROLA
General Release Specification
Interrupts
35
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