5V power-on reset 3.3V power-on reset Internal power is drawn from higher of either the 5VIN input or the 3.3VIN input Excellent for systems designed to operate with dual.

5VIN 5V RST (*RST) 5V TOL GND - 5V Power Supply Input - 5V Reset Output - Selects 5V Input Tolerance - Ground PBRST - Pushbutton Reset 3.3V TOL - Selects 3.3V Input Tolerance 3.3V RST (*RST) - 3.3V Reset Output 3.3VIN - 3.3V Power Supply Input *DS183.

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