參數(shù)資料
型號(hào): MC68HC05BD7B
廠商: MOTOROLA INC
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封裝: SDIP-42
文件頁(yè)數(shù): 26/85頁(yè)
文件大小: 302K
代理商: MC68HC05BD7B
MOTOROLA
SECTION 4: INTERRUPTS
Page 22
GENERAL RELEASE SPECIFICATION
MC68HC05BD7 Rev. 2.0
PRELIMINARY
Figure 4-1: Interrupt Processing Flowchart
N
Y
From
RESET
Is
I-Bit
Set?
Load Interrupt
Vectors to PC
Set I-Bit in CCR
PC -> (SP,SP-1)
X -> (SP-2)
A -> (SP-3)
CC -> (SP-4)
Clear IRQ
Latch
Restore Registers
from Stack
CC, A, X, PC
IRQ
External
Interrupt?
DDC12AB
Interrupt?
Execute
Instruction
Fetch Next
Instruction
RTI
Instruction?
SWI
Instruction?
N
Y
V Sync
Interrupt?
N
Y
MFT
Interrupt?
N
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