HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 96

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HD6433044

Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet

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5.1.2 Block Diagram
Figure 5-1 shows a block diagram of the interrupt controller.
IRQ input
Legend
ISCR:
IER:
ISR:
IPRA:
IPRB:
SYSCR:
ADIE
input
TME
OVF
NMI
ADI
.
.
.
.
.
.
.
IRQ sense control register
IRQ enable register
IRQ status register
Interrupt priority register A
Interrupt priority register B
System control register
.
.
.
Figure 5-1 Interrupt Controller Block Diagram
Interrupt controller
ISCR
section ISR
IRQ input
IER
82
decision logic
IPRA, IPRB
Priority
Interrupt
request
Vector
number
SYSCR
UE
CPU
UI
I
CCR

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