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| HD6433308 Datasheet, PDF (82/349 Pages) Hitachi Semiconductor – Hitachi Single-Chip MicroComputer | |||
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Program execution
NMI?
Y
Interrupt
N
request
present?
Y
N
IRQ0 ?
Y
N
N
IRQ1 ?
Y
ADI?
Y
I=0 in
CCR?
Y
N
Pending
Save PC
PC: Program Counter
Save CCR
CCR: Condition Code Register
I â1, masking all
interrupts except NMI
I: Interrupt mask bit
To software
interrupt-handling routine
Figure 4-4. Hardware Interrupt-Handling Sequence
67
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