File: DS2720.man

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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 warranty. None. Use at your own risk.
'\"
.TH DS2720 3  2003 "OWFS Manpage" "One-Wire File System"
.SH NAME
.B DS2720
\- Efficient Addressable Single-cell Rechargeable Lithium Protection IC
.SH SYNOPSIS
Memory and warnings.
.PP
.B 31
[.]XXXXXXXXXXXX[XX][/[
.B lock.[0-1|ALL]
|
.B memory
|
.B pages/page.[0-1|ALL]
|
.br
.B cc
|
.B ce
|
.B dc
|
.B de
|
.B doc
|
.B ot
|
.B ov
|
.B psf
|
.B uv
|
.br
.so man3/standard_mini.3so
]]
.SH FAMILY CODE
.PP
.I 31
.SH SPECIAL PROPERTIES
.SS lock.[0-1|ALL]
.I read-write, yes-no
.br
Lock either of the two eprom pages to prevent further writes. Apparently setting
.I lock
is permanent.
.SS memory
.I read-write, binary
.br
Access to the full 256 byte memory range. Much of this space is reserved or special use. User space is the
.I page
area.
.br
See the
.I DATASHEET
for a full memory map.
.SS pages/pages.[0-1|ALL]
.I read-write, binary
Two 8 byte areas of memory for user application. The
.I lock
property can prevent further alteration.
.br
NOTE that the
.I page
property is different from the common 
.I OWFS
implementation in that all of
.I memory
is not accessible.
.SH OBSCURE PROPERTIES
.SS cc ce dc de doc ot ov uv
.I varies, yes-no
.br
Bit flags corresponding to various battery management functions of the chip. See the 
.I DATASHEET
for details of the identically named entries.
.br
In general, writing "0" corresponds to a 0 bit value, and non-zero corresponds to a 1 bit value.
.SH STANDARD PROPERTIES
.so man3/standard.3so
.SH ALARMS
None.
.SH DESCRIPTION
.so man3/description.3so
.SS DS2720
The
.B DS2720 (3)
is a battery charging monitor. Besides it's intended use, it may have use in monitoring for device failures.
.SH ADDRESSING
.so man3/addressing.3so
.SH DATASHEET
.br
http://pdfserv.maxim-ic.com/en/ds/DS2720.pdf
.SH SEE ALSO
.so man3/seealso.3so
.SH AVAILABILITY
http://www.owfs.org
.SH AUTHOR
Paul Alfille (paul.alfille@gmail.com)