mc68hc705c9a Freescale Semiconductor, Inc, mc68hc705c9a Datasheet - Page 37

• Manufacturer Part Number: mc68hc705c9a
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
RESTORE REGISTERS
FROM STACK:
CCR,A,X,PC
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
Y
Y
IRQ OR PORT B
Figure 4-1. Interrupt Flowchart
INSTRUCTION
INSTRUCTION
INTERRUPT
EXTERNAL
INSTRUCTION
FROM RESET
INSTRUCTION
INTERRUPT
INTERNAL
FETCH NEXT
INTERRUPT
INTERRUPT
INTERNAL
EXECUTE
INTERNAL
TIMER
IN CCR
SET?
I BIT
SWI
RTI
SPI
SCI
?
?
N
N
N
N
N
N
N
Y
Y
Y
Y
Y
CLEAR IRQ
REQUEST
LATCH
External Interrupt (IRQ or Port B)
TIMER: $3FF8-$3FF9
SWI: $3FFC-$3FFD
LOAD PC FROM:
IRQ: $3FFA-$3FFB
SCI: $3FF6-$3FF7
SPI: $3FF4-$3FF5
CC REGISTER
SET I BIT IN
PC,X,A,CCR
STACK
37