Chapter 10. Interrupt - Renesas M16C Series Hardware Manual

R8C/11 Group
10. Interrupt
10.1 Interrupt Overview
10.1.1 Type of Interrupts
Figure 10.1 shows types of interrupts.
Software
(Non-maskable interrupt)
Interrupt
Hardware
NOTES:
1. Peripheral function interrupts are generated by the peripheral functions built in the microcomputer system.
2. Avoid using this interrupt because this is a dedicated interrupt for development support tools only.
Figure 10.1 Interrupts
• Maskable Interrupt: An interrupt which can be enabled (disabled) by the interrupt enable flag (I flag) or
• Non-maskable Interrupt: An interrupt which cannot be enabled (disabled) by the interrupt enable flag
Rev.1.20 Jan 27, 2006
REJ09B0062-0120
Special
(Non-maskable interrupt)
Peripheral function
(Maskable interrupt)
whose interrupt priority can be changed by priority level.
(I flag) or whose interrupt priority cannot be changed by priority level.
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Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Watchdog timer
Oscillation stop detection
Voltage detection
(2)
Single step
Address match
(1)
10.1 Interrupt Overview