Renesas RL78/G13 - INTP0 External Interrupt

RL78/G13 Safety Function (Frequency Detection)
5.8.30 INTP0 External Interrupt
Figure 5.33 shows the flowchart for an INTP0 external interrupt.
r_intc0_interrupt()
Set external interrupt occurrence
flag
g_intp0_flag

1
Start interval timer
R_IT_Start()
RINTE bit

1: Start counting.
ITIF bit

0: Clear interrupt request flag.
ITMK bit

0: Enable INTIT interrupt processing.
Ye s
Interval timer
counter started?
No
return
Figure 5.33 INTP0 External Interrupt
R01AN0956EJ0100 Rev. 1.00 Page 61 of 70
Feb. 27, 2012