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M16C/5L Group, M16C/56 Group
12.3
Types of Interrupts
Figure 12.1 shows Types of Interrupts.
Software
(non-maskable interrupt)
Interrupt
Hardware
Notes:
1. The peripheral functions in the MCU are used to generate peripheral interrupts.
2. Do not use this interrupt because it is provided exclusively for use by development tools.
Figure 12.1
Types of Interrupts
•
Maskable interrupt
•
Non-maskable interrupt
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
Special
(non-maskable interrupt)
(1)
Peripheral function
(maskable interrupt)
: The I flag (interrupt enable flag) can enable/disable these interrupts.
The interrupt priority order can be changed by using the interrupt
priority level.
: The I flag (interrupt enable flag) cannot enable/disable these
interrupts.
The interrupt priority order cannot be changed by using the interrupt
priority level.
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
NMI
(2)
DBC
Watchdog timer
Oscillator stop/restart detect
Voltage monitor 2
(2)
Single-step
Address match
12. Interrupts
Page 179 of 803
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