Interrupt Sources - Hitachi H8/3035 Series Hardware Manual

8.5.3 Interrupt Sources

Each ITU channel can generate a compare match/input capture A interrupt, a compare
match/input capture B interrupt, and an overflow interrupt. In total there are 15 interrupt sources,
all independently vectored. An interrupt is requested when the interrupt request flag and
interrupt enable bit are both set to 1.
The priority order of the channels can be modified in interrupt priority registers A and B (IPRA
and IPRB). For details see section 5, Interrupt Controller.
Table 8-10 lists the interrupt sources.
Table 8-10 ITU Interrupt Sources
Interrupt
Channel Source Description
0 IMIA0 Compare match/input capture A0
IMIB0 Compare match/input capture B0
OVI0 Overflow 0
1 IMIA1
Compare match/input capture A1
IMIB1 Compare match/input capture B1
OVI1 Overflow 1
2 IMIA2 Compare match/input capture A2
IMIB2 Compare match/input capture B2
OVI2 Overflow 2
3 IMIA3 Compare match/input capture A3
IMIB3 Compare match/input capture B3
OVI3 Overflow 3
4 IMIA4 Compare match/input capture A4
IMIB4 Compare match/input capture B4
OVI4 Overflow 4
Note: * The priority immediately after a reset is indicated. Inter-channel priorities can be changed by settings in
IPRA and IPRB.
Priority*
High
Low
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