r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 136

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 5 Interrupt Controller
A block diagram of the interrupt controller is shown in figure 5.1.
Rev. 1.00 Sep. 19, 2008 Page 106 of 1342
REJ09B0467-0100
NMI input
IRQ input
Internal
interrupt
sources
SWDTEND
to SSTXI
Legend:
ISCR:
IER:
ISR:
IPR:
INTCR: Interrupt control register
ITSR:
INTCR
ITSR
Interrupt controller
Figure 5.1 Block Diagram of Interrupt Controller
IRQ sense control register
IRQ enable register
IRQ status register
Interrupt priority register
IRQ pin select register
NMI input unit
IRQ input unit
NMIEG
INTM1 INTM0
ISR
ISCR
IER
determination
Priority
IPR
Interrupt
request
Vector
number
I2 to I0
I
CPU
CCR
EXR