Renesas rl78 User Manual

 

RL78/G1A 

 

CHAPTER  16   INTERRUPT  FUNCTIONS 

 

No

No

Yes

Jul 04, 2013 

No

Yes

Yes (Hi priority)

No

Yes

Yes

No

IE = 1?

Vectored interrupt servicing

Start

××IF = 1?

××MK = 0?

(

××PR

1, 

××PR

0)

  (ISP1, ISP0)

Yes (interrupt request generation)

No (Low priority)

Interrupt request held pending

Interrupt request held pending

Interrupt request held pending

Interrupt request held pending

Interrupt request held pending

Higher priority

than other interrupt requests

simultaneously 

generated?

Higher default priority

 

than other same-priority interrupt 

requests generated 

simultaneously?

≥

 

 

××IF: 

Interrupt request flag 

××MK: 

Interrupt mask flag 

××PR0: 

Priority specification flag 0 

××PR1: 

Priority specification flag 1 

IE: 

Flag that controls acknowledgment of maskable interrupt request (1 = Enable, 0 = Disable) 

ISP0, ISP1:  Flag that indicates the priority level of the interrupt currently being serviced (see Figure 16-6) 

 

Note  For the default priority, see Table 16-1  Interrupt Source List. 

 

R01UH0305EJ0200  Rev.2.00 

 

 

707