Interrupts; Type Of Interrupts - Renesas M16C/60 Series Hardware Manual

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M16C/6N5 Group

Interrupts

Type of Interrupts

Figure 1.10.1 shows the types of interrupts.
Software
(Non-maskable interrupt)
Interrupt
Hardware
Note 1: Peripheral function interrupts are generated by the microcomputer's internal functions.
Note 2: Do not normally use this interrupt because it is provided exclusively for use by development
support tools.
Figure 1.10.1 Interrupts
• Maskable Interrupt:
• Non-maskable Interrupt: An interrupt which cannot be enabled (disabled) by the interrupt enable flag
Rev.1.00 2003.05.30 page 67
Special
(Non-maskable interrupt)
Peripheral function (Note 1)
(Maskable interrupt)
An interrupt which can be enabled (disabled) by the interrupt enable flag
(I flag) or whose interrupt priority can be changed by priority level.
(I flag) or whose interrupt priority cannot be changed by priority level.
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
_______
NMI
________
DBC (Note 2)
Oscillation stop and re-oscillation detection
Watchdog timer
Single step (Note 2)
Address match
Interrupts