Interrupt; Type Of Interrupts - Renesas M16C/62P Series Hardware Manual

M16C/62P Group (M16C/62P, M16C/62PT)

12. Interrupt

Note
The M16C/62P (80-pin version) do not use INT3 to INT5 interrupt of peripheral function.
The M16C/62PT (100-pin version) do not use low voltage detection interrupt.
The M16C/62PT (80-pin version) do not use low voltage detection interrupt and INT3 to INT5 interrupt of peripheral
function.
12.1

Type of Interrupts

Figure 12.1 shows Type of Interrupts.
Software
(Non-maskable interrupt)
Interrupt
Hardware
NOTES:
1. The peripheral functions in the microcomputer are used to generate the peripheral interrupt.
2. Do not normally use this interrupt because it is provided exclusively for use by development tools.
Figure 12.1 Type of Interrupts
•
Maskable Interrupt
•
Non-Maskable Interrupt : An interrupt which cannot be enabled (disabled) by the interrupt enable flag (I flag)
Rev.2.41 Jan 10, 2006
REJ09B0185-0241
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Special
(Non-maskable interrupt)
Peripheral function
(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.
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
NMI
(2)
DBC
Watchdog timer
Oscillation stop and re-oscillation
detection
Low voltage detection
(2)
Single step
Address match
(1)
12. Interrupt
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