M16C6NK Datasheet, PDF (99/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6NK, M16C/6NM)
10. Interrupt
10.1 Type of Interrupts
Figure 10.1 shows the types of interrupts.
10. Interrupt
Software
(Non-maskable interrupt)
Undefined instruction (UND instruction)
Overflow (INTO instruction)
BRK instruction
INT instruction
Interrupt
Hardware
Special
(Non-maskable interrupt)
Peripheral function ⁽¹⁾
(Maskable interrupt)
_______
NMI
________
DBC ⁽²⁾
Oscillation stop and re-oscillation detection
Watchdog timer
Single step ⁽²⁾
Address match
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 10.1 Interrupts
• 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.
Rev.2.00 Nov 28, 2005 page 81 of 378
REJ09B0124-0200