DS2506(3) One-Wire File System DS2506(3)

# [NAME](#NAME)

**DS2506, DS2506-UNW** - Add-Only Memory (64 kBit), UniqueWare Add-Only Memory (64 kBit)

[**DS1986, DS1986U**](#DS1986,)

\- Add-Only iButton (64 kBit), UniqueWare iButton (64 kBit)

# [SYNOPSIS](#SYNOPSIS)

EPROM add-only memory.

**0F** \[.]XXXXXXXXXXXX\[XX]\[/\[ **memory** | **pages/page.\[0-255|ALL]** |

See the file man3/standard\_mini.3so.

]]

**8F** \[.]XXXXXXXXXXXX\[XX]\[/\[ **memory** | **pages/page.\[0-255|ALL]** |

See the file man3/standard\_mini.3so.

]]

# [FAMILY CODE](#FAMILY_CODE)

*0F*

DS2506 DS1986

*8F*

DS2506-UNW DS1986U

# [SPECIAL PROPERTIES](#SPECIAL_PROPERTIES)

## [memory](#memory)

*read-write, binary*  
8192 bytes of memory. Initially all bits are set to 1. Writing zero permanently alters the memory.

## [pages/page.0 ... pages/page.255 pages/page.ALL](#pages/page.0_..._pages/page.255_pages/page.ALL)

*read-write, yes-no*  
Memory is split into 256 pages of 32 bytes each. *ALL* is an aggregate of the pages. Each page is accessed sequentially.

# [STANDARD PROPERTIES](#STANDARD_PROPERTIES)

See the file man3/standard.3so.

# [ALARMS](#ALARMS)

None.

# [DESCRIPTION](#DESCRIPTION)

See the file man3/description.3so.

## [DS2506 DS1986](#DS2506_DS1986)

The [**DS2506 (3)**](/man/os/owfs/DS2506.3) is used for write-once incremental storage. It's main advantage is for audit trails (i.e. a digital purse).

The **DS2506-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](#ADDRESSING)

See the file man3/addressing.3so.

# [DATASHEET](#DATASHEET)

http://pdfserv.maxim-ic.com/en/ds/DS2506.pdf  
http://pdfserv.maxim-ic.com/en/ds/DS2502-UNW-DS2506S-UNW.pdf  
http://pdfserv.maxim-ic.com/en/ds/DS1986-F3-DS1986-F5.pdf  
http://pdfserv.maxim-ic.com/en/ds/DS1982U-DS1986U.pdf

# [SEE ALSO](#SEE_ALSO)

See the file man3/seealso.3so.

# [AVAILABILITY](#AVAILABILITY)

http://www.owfs.org

# [AUTHOR](#AUTHOR)

Paul Alfille (paul.alfille@gmail.com)

2003 OWFS Manpage

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Document: DS1986(3) from owfs 3.2.4-r8 (Chainguard OS)
Source: https://github.com/owfs/owfs