Section 5 Interrupt Controller
Rev. 1.00 Mar. 12, 2008 Page 78 of 1178
REJ09B0403-0100
SYSCR
NMI input
IRQ input
Internal interrupt sources
SWDTEND to EINT
NMIEG
INTM1, INTM0
NMI input
IRQ input
ISR
ISCR
IER
ICR
Interrupt controller
Priority level
determination
Interrupt
request
Vector number
I, UI
CCR
CPU
ICR:
ISCR:
IER:
ISR:
SYSCR:
Interrupt control register
IRQ sense control register
IRQ enable register
IRQ status register
System control register
[Legend]
Figure 5.1 Block Diagram of Interrupt Controller
5.2 Input/Output
Pins
Table 5.1 summarizes the pins of the interrupt controller.
Table 5.1
Pin Configuration
Symbol I/O
Function
NMI
Input
Nonmaskable external interrupt
Rising edge or falling edge can be selected
IRQ15
to
IRQ0
ExIRQ15
to
ExIRQ0
Input Maskable
external
interrupts
Rising edge, falling edge, or both edges, or level sensing can be
selected individually for each pin. Pin of
IRQn
or
ExIRQn
to input
IRQn
(n = 15 to 0) interrupt can be selected.
Содержание H8S Family
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