R8CSLASH2G datasheet(128/344 Pages) RENESAS

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R8C/2G Group

13. Interrupts

Rev.1.00

Apr 04, 2008

Page 108 of 318

REJ09B0387-0100

13. Interrupts

13.1

Interrupt Overview

13.1.1

Types of Interrupts

Figure 13.1 shows the Types of Interrupts.

Figure 13.1

Types of Interrupts

• Maskable Interrupts:

The interrupt enable flag (I flag) enables or disables these interrupts. The

interrupt priority order can be changed based on the interrupt priority level.

• Non-Maskable Interrupts:

The interrupt enable flag (I flag) does not enable or disable these interrupts.

The interrupt priority order cannot be changed based on interrupt priority

level.

Interrupts

(non-maskable interrupts)

Hardware

Software

(non-maskable interrupts)

(maskable interrupts)

Special

Peripheral functions(1)

Undefined instruction (UND instruction)

Overflow (INTO instruction)

BRK instruction

INT instruction

Watchdog timer

Voltage monitor 1

Voltage monitor 2

Comparator 1(2)

Comparator 2(2)

Single step(3)

Address break(3)

Address match

NOTES:

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

2. When non-maskable interrupts is selected.

3. Do not use this interrupt. This is for use with development tools only.

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