參數(shù)資料
型號: MC68HC05C9AFN
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 103/162頁
文件大小: 1093K
代理商: MC68HC05C9AFN
Interrupts
SPI Interrupt
MC68HC05C9A Rev. 5.0
Advance Information
MOTOROLA
Interrupts
45
N
O
N-D
I
SC
L
O
SU
R
E
AG
R
EEMENT
R
E
Q
U
IR
ED
Figure 4-1. Interrupt Flowchart
FETCH NEXT
INSTRUCTION
SWI
INSTRUCTION
?
RTI
INSTRUCTION
?
EXECUTE
RESTORE REGISTERS
FROM STACK:
CCR, A, X, PC
N
Y
N
Y
INSTRUCTION
STACK
PC, X, A, CCR
SET I BIT IN
CC REGISTER
LOAD PC FROM:
SWI: $3FFC–$3FFD
IRQ: $3FFA–$3FFB
TIMER: $3FF8–$3FF9
SCI: $3FF6–$3FF7
SPI: $3FF4–$3FF5
INTERNAL
SPI
INTERRUPT
INTERNAL
SCI
INTERRUPT
Y
N
INTERNAL
TIMER
INTERRUPT
CLEAR IRQ
REQUEST LATCH
IRQ OR PORT B
EXTERNAL
INTERRUPT
I BIT
IN CCR
SET?
FROM RESET
Y
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