參數(shù)資料
型號: MC68HC05C12ACFN
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 86/156頁
文件大?。?/td> 3848K
代理商: MC68HC05C12ACFN
MC68HC05C12A Rev. 3.0
General Release Specification
Interrupts
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC05C12A
Section 4. Interrupts
4.1 Contents
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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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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