How to Power the Extended Features of 1-Wire® Devices

Abstract: A 1-Wire bus provides both communication and power between a host and slave devices on a single line. Some 1-Wire devices offer extended features, which include EEPROM, temperature measurement, and a SHA-1 engine. Operation of these special features can require additional power, so the 1-Wire device's pull-up resistor (RPUP) must be sized accordingly.