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R8C/15 데이터시트(PDF) 39 Page - Renesas Technology Corp |
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R8C/15 데이터시트(HTML) 39 Page - Renesas Technology Corp |
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39 / 277 page ![]() R8C/14 Group, R8C/15 Group 6. Voltage Detection Circuit Rev.2.10 Jan 19, 2006 Page 27 of 253 REJ09B0164-0210 Figure 6.3 Block Diagram of Voltage Monitor 2 Interrupt / Reset Generation Circuit + - 1/2 1/2 1/2 Voltage Detection 2 Circuit VCA27 VCC Internal Reference voltage VCA13 Noise Filter (Filter Width: 200ns) Voltage detection 2 signal is held “H” when VCA27 bit is set to “0” (disabled) Voltage Detection 2 signal Digital Filter fRING-S VW2F1 to VW2F0 =00b =01b =10b =11b VW2C1 VW2C2 bit is set to “0” (not detected) by writing “0” by program. When VCA27 bit is set to “0” (voltage detection 2 circuit disabled), VW2C2 bit is set to “0” VW2C2 VW2C7 VW2C3 Watchdog Timer Block Watchdog Timer Underflow Signal This bit is set to “0” (not detected) by writing “0” by program. VW2C0 VW2C6 Non-Maskable Interrupt Signal Voltage Monitor 2 Interrupt Signal Watchdog Timer Interrupt Signal Oscillation Stop Detection Interrupt Signal Voltage Monitor 2 Interrupt / Reset Generation Circuit VW2C0 to VW2C3, VW2F2, VW2F1, VW2C6, VW2C7: Bits in VW2C register VCA13: Bit in VCA1 register VCA27: Bit in VCA2 register Voltage Monitor 2 Reset Signal |
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