Renesas R8C series User Manual

R8C/1A Group, R8C/1B Group 12. Interrupts
Rev.1.30 Dec 08, 2006 Page 78 of 315
REJ09B0252-0130
12. Interrupts
12.1 Interrupt Overview
12.1.1 Types of Interrupts
Figure 12.1 shows the types of Interrupts.
Figure 12.1 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 interrupts. The
interrupt priority order cannot be changed based on interrupt priority level.
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 MCU are used to generate peripheral interrupts.
2. Do not use this interrupt.
This is for use with development tools only.

Renesas R8C series Specifications

General

Brand	Renesas
Model	R8C series
Category	Computer Hardware
Language	English