参数资料
型号: MC68HC05RC8P
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封装: PLASTIC, DIP-28
文件页数: 58/122页
文件大小: 445K
代理商: MC68HC05RC8P
Interrupts
General Release Specification
MC68HC05RC16 — Rev. 3.0
40
Interrupts
MOTOROLA
Figure 4-1. Interrupt Processing Flowchart
N
RESTORE REGISTERS
FROM STACK: CCR, A, X, PC.
LOAD PC FROM
APPROPRIATE
VECTOR.
SET I BIT IN
CC REGISTER.
STACK
PC, X, A, CCR.
CLEAR IRQ
REQUEST
LATCH.
FETCH NEXT
INSTRUCTION.
EXECUTE
INSTRUCTION.
Y
N
I BIT
IN CCR
SET?
SWI
INSTRUCTION
?
N
Y
RTI
INSTRUCTION
?
Y
FROM
RESET
Y
INTERNAL
CMT
INTERRUPT
N
Y
INTERNAL
CORE TIMER
INTERRUPT
IRQ/PORT B
EXTERNAL
INTERRUPTS
EIMSK
CLEAR?
Y
N
KEYSCAN
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