r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 131

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

5.1
• Two interrupt control modes
• Priorities settable with IPR
• Independent vector addresses
• External interrupt pins
• DTC and DMAC control
Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in the
interrupt control register (INTCR).
An interrupt priority register (IPR) is provided for setting interrupt priorities. Eight priority
levels can be set for each module for all interrupts except NMI. NMI is assigned the highest
priority level of 8, and can be accepted at all times.
All interrupt sources are assigned independent vector addresses, making it unnecessary for the
source to be identified in the interrupt handling routine.
NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling edge
can be selected for NMI. Falling edge, rising edge, or both edge detection, or level sensing, can
be selected for IRQn-A and IRQn-B.
Note:
DTC and DMAC activations are performed by means of interrupts.
Features
n = 15 to 0 for H8S/2426 Group, n = 7 to 0 for H8S/2424 Group
Section 5 Interrupt Controller
Rev. 1.00 Sep. 19, 2008 Page 103 of 1270
Section 5 Interrupt Controller
REJ09B0466-0100