Renesas RL78/F13

RL78/F13, F14 CHAPTER 21 INTERRUPT FUNCTIONS
R01UH0368EJ0210 Rev.2.10 1501
Dec 10, 2015
The interrupt sources INTP4, INTP5, INTP8, and INTP13 are function-multiplexed with other interrupts. INTFLG0
register is used to determine which of the interrupt sources causes an interrupt. Figure 21-7 shows the flowchart of
interrupt processing using the interrupt source determination flag.
Figure 21-7. Flowchart of Interrupt Processing Using the Interrupt Source Determination Flag
No
Yes
Vectored interrupt servicing starts
The corresponding bit
in the INTFLG0 register
= 1?
Clear the corresponding bit in the INTFLG0 register
Interrupt processing for the corresponding bit
in the INTFLG0 register
Alternate interrupt source detected?
Interrupt processing for the alternate interrupt source
Vectored interrupt servicing ends
No
Yes