1-Wire Family Code Database

Up to date, 2024, 1-Wire Family Code Database includes all memory, authentication, ID, battery, and other devices.

What is a family code?

Every 1-Wire device has what’s known as a family code; it’s the last byte of the Unique ID (sometimes called the ROM ID, Lasered ROM, or net address); it uniquely identifies the 1-Wire part.

You can find out the 1-Wire ID by sniffing the bus and looking for commands or issuing commands like; Read ROM, Match ROM, or Search ROM; all those commands contain the full Unique ID.