MC68HC705CT4 Datasheet, PDF (38/152 Pages) Freescale Semiconductor, Inc – General Release Specification

Interrupts
Freescale Semiconductor, Inc.
FROM
RESET
Y
I BIT
IN CCR
SET?
N
IRQ
EXTERNAL
Y
INTERRUPT
CMP3
N
INTERNAL
Y
16-BIT TIMER
INTERRUPT
N
INTERNAL
Y
SSI
INTERRUPT
N
INTERNAL
Y
CORE TIMER
INTERRUPT
N
CLEAR IRQ
REQUEST
LATCH
FETCH NEXT
INSTRUCTION
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
General Release Specification
MC68HC705CT4 — Rev. 2.0
38
Interrupts
MOTOROLA
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