R8C14 Datasheet, PDF (68/277 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / R8C/Tiny SERIES

R8C/14 Group, R8C/15 Group
11. Interrupt
11.1 Interrupt Overview
11.1.1 Types of Interrupts
Figure 11.1 shows types 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)
Watchdog Timer
Oscillation Stop Detection
Voltage Monitor 2
Single Step⁽²⁾
Address Match
NOTES :
1. Peripheral function interrupts in the microcomputer are used to generate the peripheral interrupt.
2. Do not use this interrupt. For development tools only.
Figure 11.1 Interrupts
• Maskable Interrupt:
• Non-Maskable Interrupt:
The interrupt enable flag (I flag) enables or disables an interrupt. The
interrupt priority order based on the interrupt priority level can be
changed.
The interrupt enable flag (I flag) does not enable or disable an
interrupt. The interrupt priority order based on interrupt priority level
cannot be changed.
Rev.2.10 Jan 19, 2006 Page 56 of 253
REJ09B0164-0210