h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 125

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

5.1
5.1.1
The H8S/2646 Group controls interrupts by means of an interrupt controller. The interrupt
controller has the following features:
• Two interrupt control modes
• Priorities settable with IPR
• Independent vector addresses
• Seven external interrupts
• DTC control
 Any of two interrupt control modes can be set by means of the INTM1 and INTM0 bits in
 An interrupt priority register (IPR) is provided for setting interrupt priorities. Eight priority
 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
 NMI is the highest-priority interrupt, and is accepted at all times. Rising edge or falling
 Falling edge, rising edge, or both edge detection, or level sensing, can be selected for IRQ5
 DTC activation is performed by means of interrupts.
the system control register (SYSCR).
levels can be set for each module for all interrupts except NMI.
the source to be identified in the interrupt handling routine.
edge can be selected for NMI.
to IRQ0.
Overview
Features
Section 5 Interrupt Controller
Rev. 5.00 Sep 22, 2005 page 99 of 1136
Section 5 Interrupt Controller
REJ09B0257-0500