參數資料
型號: MC68HC05C9ACFN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數: 92/160頁
文件大?。?/td> 783K
代理商: MC68HC05C9ACFN
MC68HC05C9A Rev. 4.0
General Release Specification
MOTOROLA
Interrupts
37
NON-DISCLOSURE
AGREEMENT
REQUIRED
General Release Specification — MC68HC05C9A
Section 4. Interrupts
4.1 Contents
4.2 Introduction
The MCU can be interrupted by five different sources, four maskable
hardware interrupts, and one non-maskable software interrupt:
External signal on the IRQ pin or port B pins
16-bit programmable timer
Serial communications interface
Serial peripheral interface
Software interrupt instruction (SWI)
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 instruction causes the register contents to be recovered from the
stack and normal processing to resume.
Unlike RESET, hardware interrupts do not cause the current instruction
execution to be halted, but are considered pending until the current
instruction is complete.
NOTE:
The current instruction is the one already fetched and being operated on.
相關PDF資料
PDF描述
MC68HC05C9ACB 8-BIT, MROM, 4.2 MHz, MICROCONTROLLER, PDIP42
MC68HC05C9AFBE 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HSC05C9ACFB 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PQFP44
MC68HC05C9AP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HC05C9AFNE 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
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