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'\"
'\" Copyright (c) 2003-2004 Paul H Alfille, MD
'\" (paul.alfille@gmail.com)
'\"
'\" Device manual page for the OWFS -- 1-wire filesystem package
'\" Based on Dallas Semiconductor, Inc's datasheets, and trial and error.
'\"
'\" Free for all use. No waranty. None. Use at your own risk.
'\" $Id$
'\"
.TH DS2505 3 2003 "OWFS Manpage" "One-Wire File System"
.SH NAME
.TP
.B DS2505, DS2505-UNW, DS1985, DS1985U
\- Add-Only Memory (16 kBit),
UniqueWare Add-Only Memory (16 kBit),
Add-Only iButton (16 kBit),
UniqueWare iButton (16 kBit)
.SH SYNOPSIS
EPROM add-only memory.
.PP
.B 0B
[.]XXXXXXXXXXXX[XX][/[
.B memory
|
.B pages/page.[0-63|ALL]
|
.so man3/standard_mini.3so
]]
.PP
.B 8B
[.]XXXXXXXXXXXX[XX][/[
.B memory
|
.B pages/page.[0-63|ALL]
|
.so man3/standard_mini.3so
]]
.SH FAMILY CODE
.TP
.I 0B
DS2505 DS1985
.TP
.I 8B
DS2505-UNW DS1985U
.SH SPECIAL PROPERTIES
.SS memory
.I read-write, binary
.br
2048 bytes of memory. Initially all bits are set to 1. Writing zero permanently alters the memory.
.SS pages/page.0 ... pages/page.63 pages/page.ALL
.I read-write, yes-no
.br
Memory is split into 64 pages of 32 bytes each.
.I ALL
is an aggregate of the pages. Each page is accessed sequentially.
.SH STANDARD PROPERTIES
.so man3/standard.3so
.SH ALARMS
None.
.SH DESCRIPTION
.so man3/description.3so
.SS DS2505 DS1985
The
.B DS2505 (3)
is used for write-once incremental storage. It's main advantage is for audit trails (i.e. a digital purse).
.PP
The
.B DS2505-UNW
is one of the
.I UniqueWare
class of devices. Some of the memory was preprogramed at the factory. See the datasheet for specifics. The
.B DS2502
,
.B DS2505
, and
.B DS2506
differ in their function by the amount of on-board memory they possess. (The internal protocols are slightly different, but the
.I OWFS
system handles this automatically.
.SH ADDRESSING
.so man3/addressing.3so
.SH DATASHEET
.br
http://pdfserv.maxim-ic.com/en/ds/DS2505.pdf
.br
http://pdfserv.maxim-ic.com/en/ds/DS2502-UNW-DS2506S-UNW.pdf
.br
http://pdfserv.maxim-ic.com/en/ds/DS1985-F3-DS1985-F5.pdf
.br
http://pdfserv.maxim-ic.com/en/ds/DS1982U-DS1986U.pdf
.SH SEE ALSO
.so man3/seealso.3so
.SH AVAILABILITY
http://www.owfs.org
.SH AUTHOR
Paul Alfille (paul.alfille@gmail.com)
|
