M16C/62 Group DATASHEET

InterruptMitsubishi microcomputersM16C / 62 GroupSINGLE-CHIP 16-BIT CMOS MICROCOMPUTEROverview of InterruptType of InterruptsFigure 1.14.1 lists the types of interrupts.Interrupt⎫⎪⎪⎪⎬⎪⎪⎪⎭SoftwareHardwareFigure 1.14.1. Classification of interrupts⎫⎪⎬⎪⎭SpecialPeripheral I/O (Note)⎫⎪⎬⎪⎭⎫⎪⎪⎬⎪⎪⎭Undefined instruction (UND instruction)Overflow (INTO instruction)BRK instructionINT instructionReset_______NMI________DBCWatchdog timerSingle stepAddress matchedNote: Peripheral I/O interrupts are generated by the peripheral functions built into the microcomputer system.• 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.• Non-maskable interrupt : An interrupt which cannot be enabled (disabled) by the interrupt enable flag(I flag) or whose interrupt priority cannot be changed by priority level.50