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R8C/20 Datasheet(PDF) 103 Page - Renesas Technology Corp |
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R8C/20 Datasheet(HTML) 103 Page - Renesas Technology Corp |
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103 / 501 page  R8C/20 Group, R8C/21 Group 12. Interrupts Rev.2.00 Aug 27, 2008 Page 87 of 458 REJ09B0250-0200 12. Interrupts 12.1 Interrupt Overview 12.1.1 Types of Interrupts Figure 12.1 shows the Interrupts. Figure 12.1 Interrupts • Maskable interrupt: The interrupt enable flag (I flag) enables or disables these interrupt. The interrupt priority order can be changed based on the interrupt priority level. • Non-maskable interrupt: 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. Interrupt (non-maskable interrupt) Hardware Software (non-maskable interrupt) (maskable interrupt) Special Peripheral function(1) Undefined instruction (UND instruction) Overflow (INTO instruction) BRK instruction INT instruction Watchdog timer Oscillation stop detection Voltage monitor 2 Single step(2) Address break(2) Address match NOTES: 1. Peripheral function interrupts in the MCU are used to generate the peripheral interrupt. 2. Do not use this interrupt. This is for use with development tools only. |
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