MC68HC05V12 Datasheet, PDF (58/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Interrupts
Freescale Semiconductor, Inc.
FROM
RESET
Y
I BIT
IN CCR
SET?
N
PORT C
Y
OR IRQ
INTERRUPT?
N
Y
16-BIT TIMER
INTERRUPT?
N
BDLC
Y
INTERRUPT?
N
SPI
Y
INTERRUPT?
N
8-BIT TIMER
Y
INTERRUPT?
N
GAUGE
Y
INTERRUPT?
N
FETCH NEXT INSTRUCTION
CLEAR IRQ
REQUEST LATCH
STACK
PC, X, A, CCR
SET I BIT IN
CC REGISTER
Y
RESTORE REGISTERS
FROM STACK:
CCR, A, X, PC
SWI
Y
INSTRUCTION
?
N
RTI
INSTRUCTION
?
N
EXECUTE
INSTRUCTION
LOAD PC FROM
APPROPRIATE
VECTOR
Figure 4-1. Interrupt Processing Flowchart
Technical Data
Interrupts
For More Information On This Product,
Go to: www.freescale.com
MC68HC05V12 — Rev. 2.0