12. Interrupts; Interrupt Overview; Types Of Interrupts - Renesas R8C Series User Manual

R8C/1A Group, R8C/1B Group

12. Interrupts

12.1

Interrupt Overview

12.1.1

Types of Interrupts

Figure 12.1 shows the types of Interrupts.
Software
(non-maskable interrupt)
Interrupt
Hardware
NOTES :
1. Peripheral function interrupts in the MCU are used to generate peripheral interrupts.
2. Do not use this interrupt.
Figure 12.1 Interrupts
• Maskable interrupts:
• Non-maskable interrupts:
Rev.1.30 Dec 08, 2006
REJ09B0252-0130
Special
(non-maskable interrupt)
Peripheral function
(maskable interrupt)
This is for use with development tools only.
The interrupt enable flag (I flag) enables or disables these interrupts. The
interrupt priority order can be changed based on the interrupt priority level.
The interrupt enable flag (I flag) does not enable or disable interrupts. The
interrupt priority order cannot be changed based on interrupt priority level.
Page 78 of 315
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Watchdog timer
Oscillation stop detection
Voltage monitor 2
(2)
Single step
Address match
(1)
12. Interrupts