h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 165

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

5.1
5.1.1
The chip controls interrupts by means of an interrupt controller. The interrupt controller has the
following features:
Note: * The H8S/2635 Group is not equipped with a DTC.
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
the system control register (SYSCR).
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 IRQ5
to IRQ0.
DTC activation is performed by means of interrupts.
Overview
Features
Section 5 Interrupt Controller
Rev. 6.00 Feb 22, 2005 page 105 of 1484
Section 5 Interrupt Controller
REJ09B0103-0600