CHAPTER 19 INTERRUPT FUNCTIONS
Page 722 of 920
Figure 19 - 10 Interrupt Request Acknowledgment Processing Algorithm
xxIF:
Interrupt request flag
xxMK:
Interrupt mask flag
xxPR0:
Priority specification flag 0
xxPR1:
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
Note
For the default priority, refer to
and
19 - 2 Interrupt Source List
.
Start
××IF = 1?
××MK = 0?
IE = 1?
Yes
No
Yes (interrupt request generation)
Yes
No (Low priority)
No
Yes
No
No
Yes (High priority)
(xxPR1, xxPR0)
≤
(ISP1, ISP0)
Higher default
priority
Note
than other
same-priority interrupt requests
simultaneously
generated?
Yes
No
Vectored interrupt servicing
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?
Summary of Contents for RL78/G1H
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