r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 164

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

Section 5 Interrupt Controller
5.6
The interrupt controller has two modes: interrupt control mode 0 and interrupt control mode 2.
Interrupt operations differ depending on the interrupt control mode. The interrupt control mode is
selected by INTCR. Table 5.3 shows the differences between interrupt control mode 0 and
interrupt control mode 2.
Table 5.3
Rev. 1.00 Sep. 19, 2008 Page 134 of 1342
REJ09B0467-0100
Interrupt
Control Mode
0
2
Interrupt Control Modes and Interrupt Operation
Interrupt Control Modes
Priority Setting
Registers
Default
IPR
Interrupt
Mask Bits
I
I2 to I0
Description
The priorities of interrupt sources are fixed at
the default settings.
Interrupt sources except for NMI is masked by
the I bit.
8 priority levels except for NMI can be set with
IPR.
8-level interrupt mask control is performed by
bits I2 to I0.