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R8C2K 数据表(PDF) 111 Page - Renesas Technology Corp |
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R8C2K 数据表(HTML) 111 Page - Renesas Technology Corp |
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111 / 471 page ![]() R8C/2K Group, R8C/2L Group 10. Clock Generation Circuit Rev.1.10 Dec 21, 2007 Page 94 of 450 REJ09B0406-0110 Figure 10.15 Example of Determining Interrupt Source for Oscillation Stop Detection, Watchdog Timer, Voltage Monitor 1, or Voltage Monitor 2 Interrupt Interrupt sources judgment OCD3 = 1 ? (XIN clock stopped) OCD1 = 1 (oscillation stop detection interrupt enabled) and OCD2 = 1 (on-chip oscillator clock selected as system clock) ? VW2C3 = 1 ? (Watchdog timer underflow) VW2C2 = 1 ? (passing Vdet2) To oscillation stop detection interrupt routine To voltage monitor 1 interrupt routine To voltage monitor 2 interrupt routine To watchdog timer interrupt routine NO YES NO YES NO YES NO YES NOTE: 1. This disables multiple oscillation stop detection interrupts. OCD1 to OCD3: Bits in OCD register VW2C2, VW2C3: Bits in VW2C register Set OCD1 bit to 0 (oscillation stop detection interrupt disabled).(1) |
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