MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
ManufacturerFreescale Semiconductor, Inc
MC68HC705C8ACS datasheet
 


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Freescale Semiconductor, Inc.
FROM
RESET
I BIT IN
YES
CCR REGISTER
EXTERNAL
INTERRUPT?
TIMER
INTERRUPT?
INTERRUPT?
INTERRUPT?
FETCH NEXT
INSTRUCTION
INSTRUCTION?
INSTRUCTION?
Figure 4-5. Reset and Interrupt Processing Flowchart
MC68HC705C8A — Rev. 3
MOTOROLA
For More Information On This Product,
SET?
NO
YES
IRQ
CLEAR IRQ REQUEST LATCH
NO
YES
NO
YES
SCI
NO
YES
SPI
NO
1. STACK PC, X, A, CCR
2. SET I BIT
3. LOAD PC WITH VECTOR
SWI:
$1FFC–$1FFD
IRQ:
$1FFA–$1FFB
TIMER:
$1FF8–$1FF9
SCI:
$1FF6–$1FF7
SPI:
$1FF4–$1FF5
YES
SWI
NO
RTI
YES
RESTORE REGISTERS FROM STACK:
CCR, A, X, PC
NO
EXECUTE INSTRUCTION
Interrupts
Go to: www.freescale.com
Interrupts
Interrupt Processing
Technical Data