Hitachi H8/3048 Hardware Manual page 118

www.DataSheet4U.com
Priority level 1?
No
IRQ
0
Yes
IRQ
1
Yes
I = 0
Figure 5-6 Process Up to Interrupt Acceptance when UE = 0
Program execution state
Interrupt requested?
Yes
Yes
NMI
No
No
Yes
IRQ
No
ADI
Yes
No
Yes
UI = 0
Yes
Save PC and CCR
← ←
I 1, UI 1
Read vector address
Branch to interrupt
service routine
104
No
No
0
Yes
No
IRQ
1
Yes
ADI
Yes
I = 0
Yes
No
Pending
No