HD6475348R Datasheet, PDF (117/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

5.1.2 Block Diagram
Figure 5-1 shows the block configuration of the interrupt controller.
NMI
Interrupt
request
signals
from
modules
IRQ0/interval timer
IRQ 1
IRQ2/IRQ 3
IRQ4/IRQ 5
FRT1
FRT2
FRT3
8 bit timer
SCI
A/D converter
Interrupt controller
NMI
request
Interrupt
request
DTC
request
I 2 I 1 I 0 SR (CPU)
FRT: 16 Bits Free Running Timer
SCI: Serial Communication Interface
SR: Status Register
IPRA to IPRF: Interrupt Priority Register
DTEA to DTEF: Data Transfer Enable Register
Figure 5-1 Interrupt Controller Block Diagram
98