ATMega chip full datasheet - UCSD Department of Physics

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ATmega48A/PA/88A/PA/168A/PA/328/P30.7.9 Pin Threshold and HysteresisFigure 30-307.ATmega328: I/O Pin Input Threshold Voltage vs. V CC (V IH , I/O Pin read as ‘1’)4Threshold (V)3.532.521.5-40 °C25 °C85 °C10.501.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)Figure 30-308.ATmega328: I/O Pin Input Threshold Voltage vs. V CC (V IL , I/O Pin read as ‘0’)I/O PIN INPUT THRESHOLD VOLTAGE vs. V CCVIL, IO 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–05/11496
ATmega48A/PA/88A/PA/168A/PA/328/PFigure 30-309.ATmega328: I/O Pin Input Hysteresis vs. V CC0.70.6I/O PIN INPUT HYSTERESIS vs. V CC-40 °C25 °C85 °C0.5Input Hysteresis (V)0.40.30.20.101.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)Figure 30-310.ATmega328: Reset Input Threshold Voltage vs. V CC (V IH , I/O Pin read as ‘1’)2.5-40 °C25 °C285 °CThreshold (V)1.510.501.5 2 2.5 3 3.5 4 4.5 5 5.5V CC (V)8271D–AVR–05/11497
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Atmel Corporation2325 Orchard Parkw
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ATMega chip full datasheet - UCSD Department of Physics

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