topic Re: Emulated EEPROM Query S12xE in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Emulated-EEPROM-Query-S12xE/m-p/146025#M3953 <HTML><HEAD></HEAD><BODY><P>AN3490 Rev0 has following&nbsp;lines on page7:</P><P>&nbsp;</P><UL><LI>To optimize the EEE write cycling, the S12XE implementation automatically <EM>filters out creating new</EM></LI><LI><EM>NVM records for <STRONG>aligned word</STRONG> data</EM> if the data value written to the EEE RAM is the same as that already</LI><LI>in the RAM. Writes of byte or misaligned word data will always create new records.</LI></UL><P>&nbsp;</P><P>I'm unable to find confirmation for these words in datasheet, but you could check the time how long&nbsp;MGBUSY flag is set when you write the same data, and how long it is set when writing different data.</P></BODY></HTML> Wed, 14 Mar 2012 19:53:26 GMT kef 2012-03-14T19:53:26Z Emulated EEPROM Query S12xE https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Emulated-EEPROM-Query-S12xE/m-p/146024#M3952 <HTML><HEAD></HEAD><BODY><P>I am using Emulated EEPROM on S12XE.</P><P>If I write same value to same location again and again,&nbsp;</P><P>will there be records created in D-flash each time, or the Emulated EEPROM hardware will understand that its a same value so do no create record again.</P></BODY></HTML> Wed, 14 Mar 2012 19:00:53 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Emulated-EEPROM-Query-S12xE/m-p/146024#M3952 vmore 2012-03-14T19:00:53Z Re: Emulated EEPROM Query S12xE https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Emulated-EEPROM-Query-S12xE/m-p/146025#M3953 <HTML><HEAD></HEAD><BODY><P>AN3490 Rev0 has following&nbsp;lines on page7:</P><P>&nbsp;</P><UL><LI>To optimize the EEE write cycling, the S12XE implementation automatically <EM>filters out creating new</EM></LI><LI><EM>NVM records for <STRONG>aligned word</STRONG> data</EM> if the data value written to the EEE RAM is the same as that already</LI><LI>in the RAM. Writes of byte or misaligned word data will always create new records.</LI></UL><P>&nbsp;</P><P>I'm unable to find confirmation for these words in datasheet, but you could check the time how long&nbsp;MGBUSY flag is set when you write the same data, and how long it is set when writing different data.</P></BODY></HTML> Wed, 14 Mar 2012 19:53:26 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Emulated-EEPROM-Query-S12xE/m-p/146025#M3953 kef 2012-03-14T19:53:26Z