MC68HC705SR3 MOTOROLA [Motorola, Inc], MC68HC705SR3 Datasheet - Page 40

• Manufacturer Part Number: MC68HC705SR3
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcontroller Units
• Manufacturer: MOTOROLA [Motorola, Inc]

5
MOTOROLA
5-4
Freescale Semiconductor, Inc.
Figure 5-2 Hardware Interrupt Processing Flowchart
Y
For More Information On This Product,
Keyboard Interrupt?
SWI Instruction?
Timer Interrupt?
RTI Instruction?
IRQ2 External
From RESET
IRQ External
Is I-bit Set?
Fetch Next
Interrupt ?
Interrupt ?
Instruction
Instruction
Execute
RESETS AND INTERRUPTS
N
N
N
N
N
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N
N
Y
Y
Y
Y
Y
Y
External Interrupt
Request Latch
Clear
PC
Restore Registers
CC
Program Counter
Set I-bit in CCR
X
A
Load Interrupt
CC, A, X, PC
from Stack
Vectors to
(SP, SP–1)
(SP–2)
(SP–3)
(SP–4)
MC68HC05SR3
TPG