Yes. It is possible to write to the DS2506 1-Wire memory using the OneWireViewer software by opening the "Memory" tab of the device and entering in your desired data. Please follow the OneWireViewer quickstart guide for more detailed instructions on using the OneWireViewer software.

For additional information on writing to memory with the OneWireViewer, see the OneWireViewer User's Guide and look for the section titled "Memory" or search the document for the phrase "Sample Memory Tab".