DS2401
− Silicon Serial Number
DS1990A
− Serial Number iButton
01 [.]XXXXXXXXXXXX[XX][/[ ]]
Unique serial number only.
01
None.
None.
The DS2401 (3) and DS1990A (3) are the most basic of 1-wire devices. Their sole property is it’s unique address. It can be used for unique identification. Nonetheless, many keylocks, night watchman systems, and tracking systems use this device.
http://pdfserv.maxim-ic.com/en/ds/DS2401.pdf
http://pdfserv.maxim-ic.com/en/ds/DS1990A-F3-DS1990A-F5.pdf
http://www.owfs.org
Paul Alfille ([email protected])