R8CSLASH15 datasheet(68/277 Pages) RENESAS

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R8C/14 Group, R8C/15 Group

11. Interrupt

Rev.2.10

Jan 19, 2006

Page 56 of 253

REJ09B0164-0210

11. Interrupt

11.1

Interrupt Overview

11.1.1

Types of Interrupts

Figure 11.1 shows types of Interrupts.

Figure 11.1

Interrupts

• Maskable Interrupt:

The interrupt enable flag (I flag) enables or disables an interrupt. The

interrupt priority order based on the interrupt priority level can be

changed.

• Non-Maskable Interrupt:

The interrupt enable flag (I flag) does not enable or disable an

interrupt. The interrupt priority order based on interrupt priority level

cannot be changed.

Interrupt

(Non-Maskable Interrupt)

Hardware

Software

(Non-Maskable Interrupt)

(Maskable Interrupt)

Special

Peripheral Function(1)

Undefined Instruction (UND Instruction)

Overflow (INTO Instruction)

BRK Instruction

INT Instruction

Watchdog Timer

Oscillation Stop Detection

Voltage Monitor 2

Single Step(2)

Address Match

NOTES :

1. Peripheral function interrupts in the microcomputer are used to generate the peripheral interrupt.

2. Do not use this interrupt. For development tools only.

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