FM25C256 - Revision history

Admin at 18:46, 17 January 2017

2017-01-17T18:46:32Z

Admin at 20:31, 13 December 2014

2014-12-13T20:31:17Z

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Admin at 10:32, 24 August 2013

2013-08-24T10:32:21Z

Admin at 10:31, 24 August 2013

2013-08-24T10:31:17Z

Admin at 10:30, 24 August 2013

2013-08-24T10:30:48Z

Admin at 10:30, 24 August 2013

2013-08-24T10:30:23Z

Admin at 18:20, 5 February 2013

2013-02-05T18:20:00Z

Admin: Created page with "
The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM. Ramtron memory chips ..."

2013-02-05T18:19:35Z

Created page with "<div style="height: 790px" class="nonscroll" id="idcontent"><div id="innerdiv"> The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM. Ramtron memory chips ..."

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<div style="height: 790px" class="nonscroll" id="idcontent"><div id="innerdiv">
The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM.

Ramtron memory chips are as quick as RAM and can be overwritten almost unlimited times.

 

An external EEPROM is a safe alternative to the internal EEPROM. You can also increase the size of the EEPROM this way.

 

By using : $lib "fm25c256.lib"

The EEPROM read and write routines from the library will be used instead of the internal EEPROM.

Thus you can still use : Dim BE as ERAM Byte

And you can use READEEPROM and WRITEEEPROM, but instead of using the internal EEPROM, the external I2C EEPROM is used.

The lib is for the FM25C256. It uses SPI

 

 

For the SPI you have to define the pins. The pin named fram_so is connected to SO of the FRAM. SI is connected to SI.

A sample is shown below. The clock and, cs and SI pins need to be configured as output pins.

 

Fram_cs Alias Portl.7 : Const Fram_csp = 7 : Const Fram_csport = Portl

Fram_so Alias Pind.1 : Const Fram_sop = 1 : Const Fram_soport = Pind

Fram_si Alias Portd.0 : Const Fram_sip = 0 : Const Fram_siport = Portd

Fram_sck Alias Portl.6 : Const Fram_sckp = 6 : Const Fram_sckport = Portl

 

Of course you can also use a cheaper normal SPI EEPROM. These are slower and have less write cycles.

 

[[File:Notice.jpg|left]]This library is only included in the full version. It is not included with the DEMO.

{{Languages}}

[[Category:ASM_Libraries_and_Add-Ons]]
</div></div>

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-Of course you can also use a cheaper normal SPI EEPROM. These are slower and have less write cycles.
+<span style="font-size: 10pt;">&nbsp;</span>
-−
 &nbsp;
 [[File:Notice.jpg|left|Notice.jpg]]This library is only included in the full version. It is not included with the DEMO.
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 End
 </source>
+{{Languages}}</div></div>
 {{Languages}}
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 [[Category:ASM Libraries and Add-Ons]]

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-= <span class="f_Header">Example</span> =
 <source lang="bascomavr">
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 '-------------------------------------------------------------------------------
 </source>
+{{Languages}}&nbsp;</div></div>
 {{Languages}}&nbsp;
-−
 [[Category:ASM Libraries and Add-Ons]]

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 = <span class="f_Header">Example</span> =
-<div><br/></div><div><br/></div>
 <source lang="bascomavr">
 '-----------------------------------------------------------------------------------------
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 </source>
-{{Languages}} &lt;/div&gt;&lt;/div&gt;
+{{Languages}}&nbsp;
 [[Category:ASM Libraries and Add-Ons]]

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 = <span class="f_Header">Example</span> =
 <div><br/></div><div><br/></div>
-<source lang="null">
+<source lang="bascomavr">
 '-----------------------------------------------------------------------------------------
 'name : 25C256 simple RW test.bas
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 </source>
-{{Languages}}
+{{Languages}} &lt;/div&gt;&lt;/div&gt;
-</div></div>
 [[Category:ASM Libraries and Add-Ons]]

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-<div style="height: 790px" class="nonscroll" id="idcontent"><div id="innerdiv">
+<div id="idcontent"><div id="innerdiv">
 The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM.
@@ Line 10: / Line 10: @@
 &nbsp;
-By using : $lib "fm25c256.lib"
+By using&nbsp;: $lib "fm25c256.lib"
 The EEPROM read and write routines from the library will be used instead of the internal EEPROM.
-Thus you can still use : Dim BE as ERAM Byte
+Thus you can still use&nbsp;: Dim BE as ERAM Byte
 And you can use READEEPROM and WRITEEEPROM, but instead of using the internal EEPROM, the external I2C EEPROM is used.
@@ Line 30: / Line 30: @@
 &nbsp;
-Fram_cs Alias Portl.7 : Const Fram_csp = 7 : Const Fram_csport = Portl
+Fram_cs Alias Portl.7&nbsp;: Const Fram_csp = 7&nbsp;: Const Fram_csport = Portl
-Fram_so Alias Pind.1 : Const Fram_sop = 1 : Const Fram_soport = Pind
+Fram_so Alias Pind.1&nbsp;: Const Fram_sop = 1&nbsp;: Const Fram_soport = Pind
-Fram_si Alias Portd.0 : Const Fram_sip = 0 : Const Fram_siport = Portd
+Fram_si Alias Portd.0&nbsp;: Const Fram_sip = 0&nbsp;: Const Fram_siport = Portd
-Fram_sck Alias Portl.6 : Const Fram_sckp = 6 : Const Fram_sckport = Portl
+Fram_sck Alias Portl.6&nbsp;: Const Fram_sckp = 6&nbsp;: Const Fram_sckport = Portl
 &nbsp;
@@ Line 44: / Line 44: @@
 &nbsp;
-[[File:Notice.jpg|left]]This library is only included in the full version. It is not included with the DEMO.
+[[File:Notice.jpg|left|Notice.jpg]]This library is only included in the full version. It is not included with the DEMO.
 {{Languages}}
 </div></div>

FM25C256 - Revision history

Admin at 18:46, 17 January 2017

Admin at 20:31, 13 December 2014

Admin at 10:32, 24 August 2013

Admin at 10:31, 24 August 2013

Admin at 10:30, 24 August 2013

Admin at 10:30, 24 August 2013

Admin at 18:20, 5 February 2013

Admin: Created page with " The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM. Ramtron memory chips ..."

Admin: Created page with "
The FM24C256 library is a library that uses a RAMTRON SPI serial EEPROM. Ramtron memory chips ..."