參數(shù)資料
型號(hào): MC68HLC705KJ1CDW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 94/117頁
文件大?。?/td> 1644K
代理商: MC68HLC705KJ1CDW
Resets and Interrupts
Data Sheet
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 4.0
78
Resets and Interrupts
MOTOROLA
Loads the program counter with the contents of the appropriate interrupt
vector locations:
$07FC and $07FD (software interrupt vector)
$07FA and $07FB (external interrupt vector)
$07F8 and $07F9 (timer interrupt vector)
The return-from-interrupt (RTI) instruction causes the CPU to recover the CPU
registers from the stack as shown in Figure 8-6.
Figure 8-6. Interrupt Stacking Order
CONDITION CODE REGISTER
$00C0 (BOTTOM OF STACK)
$00C1
$00C2
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
Table 8-4. Reset/Interrupt Vector Addresses
Function
Source
Local
Mask
Global
Mask
Priority
(1 = Highest)
Vector
Address
Reset
Power-On
RESET Pin
COP Watchdog(1)
Illegal Address
None
1
$07FE
$07FF
Software Interrupt
(SWI)
User Code
None
Same Priority
as Instruction
$07FC
$07FD
External Interrupt
IRQ/VPP Pin
IRQE
I Bit
2
$07FA
$07FB
Timer Interrupts
RTIF Bit
TOF Bit
RTIE Bit
TOIE Bit
I Bit
3
$07F8
$07F9
1. The COP watchdog is programmable in the mask option register.
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