HD6413003RF Datasheet, PDF (92/715 Pages) Renesas Technology Corp – Microcontroller (MCU)

5.1.2 Block Diagram
Figure 5-1 shows a block diagram of the interrupt controller.
NMI
input
IRQ input
OVF
TM....... E
...
ADI
ADIE
ISCR IER
IRQ input
section ISR
Interrupt controller
Legend
I:
Interrupt mask bit
IER: IRQ enable register
IPRA: Interrupt priority register A
IPRB: Interrupt priority register B
ISCR: IRQ sense control register
ISR: IRQ status register
SYSCR: System control register
UE:
User bit enable
UI:
User bit/interrupt mask bit
IPRA, IPRB
CPU
Interrupt
Priority
request
decision logic
Vector
number
I
CCR
UI
UE
SYSCR
Figure 5-1 Interrupt Controller Block Diagram
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