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DC Operating Conditions

ParameterSymbolMin. ValueNom. ValueMax. ValueUnit
Supply VoltageVSUP+2.80+5.00+5.50V
Operating VoltageVOP+2.80+3.30+3.60V
Output VoltageV3V3+3.15+3.30V
Li-Po Battery VoltageVBAT+3.30+3.70+4.20V
Operating TemperatureTOP-20+125°C
Note: The output voltage on the 5V pin is equal to the voltage of the power source supplying the product via the USB connector.

Input/Output Pin Characteristics

ParameterSymbolMin. ValueNom. ValueMax. ValueUnit
Pin CapacitanceCIN2pF
Logic “1” Level Input VoltageVIH0.75 × VDD*VDD* + 0.3V
Logic “0” Level Input VoltageVIL-0.30.25 × VDD*V
Logic “1” Level Input CurrentIIH50nA
Logic “0” Level Input CurrentIIL50nA
Logic “1” Level Output VoltageVOH20.8 × VDD*V
Logic “0” Level Output VoltageVOL0.1 × VDD*V
Logic “1” Level Output Current **IOH40mA
Logic “0” Level Output CurrentIOL28mA
Internal Pull-Up ResistanceRPU45kΩ
Internal Pull-Down ResistanceRPD45kΩ
Logic “1” Level Chip Reset VoltageVIH_nRST0.75 × VDD*VDD* + 0.3V
Logic “0” Level Chip Reset VoltageVIL_nRST-0.30.25 × VDD*V
  • VDD = 3.3V