| DS2505(3) | One-Wire File System | DS2505(3) |
NAME
DS2505, DS2505-UNW - Add-Only Memory (16 kBit), UniqueWare Add-Only Memory (16 kBit)
- DS1985, DS1985U
- - Add-Only iButton (16 kBit), UniqueWare iButton (16 kBit)
SYNOPSIS
EPROM add-only memory.
0B [.]XXXXXXXXXXXX[XX][/[ memory | pages/page.[0-63|ALL] |
See the file man3/standard_mini.3so.
]]
8B [.]XXXXXXXXXXXX[XX][/[ memory | pages/page.[0-63|ALL] |
See the file man3/standard_mini.3so.
]]
FAMILY CODE
- 0B
- DS2505 DS1985
- 8B
- DS2505-UNW DS1985U
SPECIAL PROPERTIES
memory
read-write, binary
2048 bytes of memory. Initially all bits are set to 1. Writing zero
permanently alters the memory.
pages/page.0 ... pages/page.63 pages/page.ALL
read-write, yes-no
Memory is split into 64 pages of 32 bytes each. ALL is an aggregate of
the pages. Each page is accessed sequentially.
STANDARD PROPERTIES
See the file man3/standard.3so.
ALARMS
None.
DESCRIPTION
See the file man3/description.3so.
DS2505 DS1985
The DS2505 (3) is used for write-once incremental storage. It's main advantage is for audit trails (i.e. a digital purse).
The DS2505-UNW is one of the UniqueWare class of devices. Some of the memory was preprogramed at the factory. See the datasheet for specifics. The DS2502 , DS2505 , and DS2506 differ in their function by the amount of on-board memory they possess. (The internal protocols are slightly different, but the OWFS system handles this automatically.
ADDRESSING
See the file man3/addressing.3so.
DATASHEET
http://pdfserv.maxim-ic.com/en/ds/DS2505.pdf
http://pdfserv.maxim-ic.com/en/ds/DS2502-UNW-DS2506S-UNW.pdf
http://pdfserv.maxim-ic.com/en/ds/DS1985-F3-DS1985-F5.pdf
http://pdfserv.maxim-ic.com/en/ds/DS1982U-DS1986U.pdf
SEE ALSO
See the file man3/seealso.3so.
AVAILABILITY
http://www.owfs.org
AUTHOR
Paul Alfille (paul.alfille@gmail.com)
| 2003 | OWFS Manpage |