M16C30P_07 Datasheet, PDF (77/317 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/30 SERIES

M16C/30P Group
11. Interrupt
11.1 Type of Interrupts
Figure 11.1 shows Type of Interrupts.
11. 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⁾
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 11.1 Type of 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.1.22 Mar 29, 2007 Page 61 of 291
REJ09B0179-0122