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M68HC05 Datasheet(PDF) 48 Page - Freescale Semiconductor, Inc

Part # M68HC05
Description  Microcontrollers
PDF  128 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

M68HC05 Datasheet(HTML) 48 Page - Freescale Semiconductor, Inc

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Technical Data
MC68HC05J1A — Rev. 3.0
Interrupts
Interrupts
Figure 4-4 shows the sequence of events caused by an interrupt.
Figure 4-4. Interrupt Flowchart
EXTERNAL
INTERRUPT?
I BIT SET?
FROM
RESET
TIMER
INTERRUPT?
FETCH NEXT
INSTRUCTION
SWI
INSTRUCTION?
RTI
INSTRUCTION?
STACK PCL, PCH, X, A, CCR
SET I BIT
LOAD PC WITH INTERRUPT VECTOR
YES
YES
YES
YES
YES
UNSTACK CCR, A, X, PCH, PCL
EXECUTE INSTRUCTION
CLEAR IRQ LATCH
NO
NO
NO
NO
NO
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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