M16C62_N Datasheet, PDF (501/621 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY

Interrupt
4.1 Overview of Interrupt
4.1.1 Type of Interrupts
Figure 4.1.1 lists the types of interrupts.
Mitsubishi microcomputers
M16C / 62 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Software
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Interrupt
Hardware
Special
Peripheral I/O (Note)
Reset
_______
NMI
________
DBC
Watchdog timer
Single step
Address matched
Note: Peripheral I/O interrupts are generated by the peripheral functions built into the microcomputer system.
Figure 4.1.1. Classification of interrupts
• Maskable interrupt :
• Non-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.
An interrupt which cannot be enabled (disabled) by the interrupt enable
flag (I flag) or whose interrupt priority cannot be changed by priority level.
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