HD6433935 Hitachi, HD6433935 Datasheet - Page 87

• Manufacturer Part Number: HD6433935
• Description: 8-Bit MICROCONTROLLER
• Manufacturer: Hitachi

Notes:
1. When disabling interrupts by clearing bits in an interrupt enable register, or when clearing bits
2. If the above clear operations are performed while I = 0, and as a result a conflict arises between
If the interrupt is accepted, after processing of the current instruction is completed, both PC
and CCR are pushed onto the stack. The state of the stack at this time is shown in figure 3-4.
The PC value pushed onto the stack is the address of the first instruction to be executed upon
return from interrupt handling.
The I bit of CCR is set to 1, masking further interrupts.
The vector address corresponding to the accepted interrupt is generated, and the interrupt
handling routine located at the address indicated by the contents of the vector address is
executed.
in an interrupt request register, always do so while interrupts are masked (I = 1).
the clear instruction and an interrupt request, exception processing for the interrupt will be
executed after the clear instruction has been executed.
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