ATMega chip full datasheet - UCSD Department of Physics

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ATmega48A/PA/88A/PA/168A/PA/328/P30.1.9 Pin Threshold and HysteresisFigure 30-25. ATmega48A: I/O Pin Input Threshold Voltage vs. V CC (V IH , I/O Pin read as ‘1’)32.5-40 °C25 °C85 °CThreshold (V)21.510.501.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)Figure 30-26. ATmega48A: I/O Pin Input Threshold Voltage vs. V CC (V IL , I/O Pin read as ‘0’)2.5285 °C25 °C-40 °CThreshold (V)1.510.501.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)8271D–AVR–05/11346
ATmega48A/PA/88A/PA/168A/PA/328/PFigure 30-27. ATmega48A: I/O Pin Input Hysteresis vs. V CC0.60.525 °C85 °C-40 °CInput Hysteresis (V)0.40.30.20.101.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)Figure 30-28. ATmega48A: Reset Input Threshold Voltage vs. V CC (V IH , I/O Pin read as ‘1)’2.52-40 °C25 °C85 °CThreshold (V)1.510.501.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)8271D–AVR–05/11347
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Atmel Corporation2325 Orchard Parkw
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ATMega chip full datasheet - UCSD Department of Physics

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