Renesas 7700 FAMILY User Manual page 79

INTERRUPTS
4.10 External interrupts (INT
Valid
pin level
INT
i
Invalid
Main routine
Fig. 4.10.4 Occurrence of INT
4–24
___
interrupt)
i
Interrupt request is accepted.
First interrupt routine
___
interrupt request in level sense mode
i
7751 Group User's Manual
When the INT
invalid level before an interrupt request is
accepted, the interrupt request is not
retained.
Return to main routine.
Second interrupt Third interrupt
routine
pin's level changes to an
i
Main routine
routine