參數(shù)資料
型號(hào): MC68HC05K0DW
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 MHz, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 101/154頁
文件大小: 1585K
代理商: MC68HC05K0DW
Technical Data
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Interrupts
Technical Data
4.4 Interrupt Processing
To begin servicing an interrupt, the CPU:
Stores the CPU registers on the stack in the order shown in
Sets the I bit in the condition code register to prevent further
interrupts
Loads the program counter with the contents of the appropriate
interrupt vector locations:
$03FC and $03FD (software interrupt vector)
$03FA and $03FB (external interrupt vector)
$03F8 and $03F9 (timer interrupt vector)
The return-from-interrupt (RTI) instruction causes the CPU to recover
the CPU registers from the stack as shown in Figure 4-3.
Figure 4-3. Interrupt Stacking Order
CONDITION CODE REGISTER
$00E0 (BOTTOM OF STACK)
$00E1
$00E2
ACCUMULATOR
INDEX REGISTER
PROGRAM COUNTER (HIGH BYTE)
PROGRAM COUNTER (LOW BYTE)
$00FD
$00FE
$00FF (TOP OF STACK)
1
2
3
4
5
4
3
2
1
UNSTACKING
ORDER
STACKING
ORDER
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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