参数资料
型号: MC68HC05C9EFB
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, PQFP44
封装: QFP-44
文件页数: 83/144页
文件大小: 1628K
代理商: MC68HC05C9EFB
Interrupts
SPI Interrupt
MC68HC05C9E
Advance Information
MOTOROLA
Interrupts
43
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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