參數(shù)資料
型號: MC68HSC05C8A
廠商: Motorola, Inc.
英文描述: 8-Bit Microcontroller Units (MCU).(8位微控制器)
中文描述: 8位微控制器單元(MCU)。(8位微控制器)
文件頁數(shù): 35/156頁
文件大?。?/td> 755K
代理商: MC68HSC05C8A
MC68HC05C8A
Rev. 3.0
General Release Specification
MOTOROLA
Interrupts
35
L
G
R
General Release Specification — MC68HC05C8A
Section 4. Interrupts
4.1 Contents
4.2
4.3
4.4
4.5
4.6
4.7
4.8
Introduction...............................................................................35
Hardware Controlled Interrupt Sequence.................................37
Software Interrupt (SWI)...........................................................37
External Interrupt (IRQ) ............................................................39
Timer Interrupt..........................................................................39
Serial Communications Interrupt (SCI).....................................39
Serial Peripheral Interrupt (SPI)................................................40
4.2 Introduction
The MCU can be interrupted five different ways:
Four maskable hardware interrupts, IRQ (interrupt request), SPI
(serial peripheral interface), SCI (serial communications
interface), and timer
Non-maskable software interrupt instruction (SWI)
Port B interrupts, if enabled, are combined with the IRQ to form a single
interrupt source.
Interrupts cause the processor to save register contents on the stack
and to set the interrupt mask (I bit) to prevent additional interrupts. The
RTI (return to interrupt) instruction causes the register contents to be
recovered from the stack and normal processing to resume.
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