參數(shù)資料
型號： MC68HC05P9ACDW
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, PDSO28
封裝： SOIC-28
文件頁數(shù)： 108/158頁
文件大?。?/td> 3885K
代理商： MC68HC05P9ACDW
Resets and Interrupts
Interrupts
Resets and Interrupts
Interrupts
The following sources can generate interrupts:
SWI instruction
IRQ pin
Capture/compare timer
An interrupt temporarily stops normal program execution to process a
particular event. An interrupt does not stop the operation of the
instruction being executed, but takes effect when the current instruction
completes its execution. Interrupt processing automatically saves the
CPU registers on the stack and loads the program counter with a
user-defined interrupt vector address.
Software
Interrupt
The software interrupt (SWI) instruction causes a non-maskable
interrupt.
External
Interrupt
An interrupt signal on the IRQ pin latches an external interrupt request.
When the CPU completes its current instruction, it tests the IRQ latch. If
the IRQ latch is set, the CPU then tests the I bit in the condition code
register. If the I bit is clear, the CPU then begins the interrupt sequence.
The CPU clears the IRQ latch during interrupt processing, so that
another interrupt signal on the IRQ pin can latch another interrupt
request during the interrupt service routine. As soon as the I bit is
cleared during the return from interrupt, the CPU can recognize the new
interrupt request. Figure 20 shows the IRQ pin interrupt logic.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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PDF描述
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相關代理商/技術參數(shù)
參數(shù)描述
MC68HC05P9ACP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9ADW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AMDW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AMP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05P9AP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
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