'\"
'\" 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 warranty. None. Use at your own risk.
'\"
.TH DS28EC20 3  2003 "OWFS Manpage" "One-Wire File System"
.SH NAME
.B DS28EC20
\- EEPROM (20 kBit)
.SH SYNOPSIS
Erasable programmable read-only memory (EEPROM)
.PP
.B 43
[.]XXXXXXXXXXXX[XX][/[
.B memory
|
.B pages/page.[0-79|ALL]
|
.so man3/standard_mini.3so
]]
.SH FAMILY CODE
.PP
.I 23
DS28EC20
.SH SPECIAL PROPERTIES
.SS memory
.I read-write, binary
.br
512 bytes of memory. Initially all bits are set to 1. Writing zero permanently alters the memory.
.SS pages/page.0 ... pages/page.79 pages/page.ALL
.I read-write, yes-no
.br
Memory is split into 80 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 DS28EC20
The
.B DS28EC20 (3)
is used for storing memory which should be available even after a reset or power off. It's main advantage is for audit trails (i.e. a digital purse).
.I OWFS
system handles this automatically.
.SH ADDRESSING
.so man3/addressing.3so
.SH DATASHEET
.br
http://datasheets.maxim-ic.com/en/ds/DS28EC20.pdf
.SH SEE ALSO
.so man3/seealso.3so
.SH AVAILABILITY
http://www.owfs.org
.SH AUTHOR
Christian Magnusson (mag@mag.cx)