topic What constitutes P/E cycle in internal flash memory. in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/What-constitutes-P-E-cycle-in-internal-flash-memory/m-p/524711#M7347 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by 00zigor on Tue Nov 18 07:13:10 MST 2014</STRONG><BR /><SPAN>Fellow adventurers of the LPC Kingdom.&nbsp; :bigsmile: </SPAN><BR /><BR /><SPAN>I'm begining my adventure at "The Cave of Internal FLASH" on my LPC1769 custom board and the following question is bugging me.</SPAN><BR /><BR /><SPAN>What is the definition for a Program/Erase cycle on flash memory?</SPAN><BR /><BR /><SPAN>I know that it is only possible to change bits from 1 to 0 on the internal FLASH and that the only way to restore a bit from 0 to 1 is to erase the entire sector, and I can live with that.</SPAN><BR /><SPAN>I also know that it is not recommended to write less than 16 bytes of memory due to ECC.</SPAN><BR /><BR /><SPAN>But, if I have a Byte with value 0x4D (01001101) already stored at a FLASH address and I try so send the same value to the same address, does that constitues a program cycle?</SPAN><BR /><BR /><SPAN>Or is the P/E cycle only defined by the change in the state of a said bit? </SPAN><BR /><SPAN>i.e: A radom bit changing its state from 1 to 0 (Program cycle), or changing from 0 to 1 (Erase cycle).</SPAN><BR /><BR /><SPAN>May the fortune guide you in your journey.&nbsp; 8-) </SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 18:09:30 GMT lpcware 2016-06-15T18:09:30Z What constitutes P/E cycle in internal flash memory. https://community.nxp.com/t5/LPC-Microcontrollers/What-constitutes-P-E-cycle-in-internal-flash-memory/m-p/524711#M7347 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by 00zigor on Tue Nov 18 07:13:10 MST 2014</STRONG><BR /><SPAN>Fellow adventurers of the LPC Kingdom.&nbsp; :bigsmile: </SPAN><BR /><BR /><SPAN>I'm begining my adventure at "The Cave of Internal FLASH" on my LPC1769 custom board and the following question is bugging me.</SPAN><BR /><BR /><SPAN>What is the definition for a Program/Erase cycle on flash memory?</SPAN><BR /><BR /><SPAN>I know that it is only possible to change bits from 1 to 0 on the internal FLASH and that the only way to restore a bit from 0 to 1 is to erase the entire sector, and I can live with that.</SPAN><BR /><SPAN>I also know that it is not recommended to write less than 16 bytes of memory due to ECC.</SPAN><BR /><BR /><SPAN>But, if I have a Byte with value 0x4D (01001101) already stored at a FLASH address and I try so send the same value to the same address, does that constitues a program cycle?</SPAN><BR /><BR /><SPAN>Or is the P/E cycle only defined by the change in the state of a said bit? </SPAN><BR /><SPAN>i.e: A radom bit changing its state from 1 to 0 (Program cycle), or changing from 0 to 1 (Erase cycle).</SPAN><BR /><BR /><SPAN>May the fortune guide you in your journey.&nbsp; 8-) </SPAN><BR /></BODY></HTML> Wed, 15 Jun 2016 18:09:30 GMT https://community.nxp.com/t5/LPC-Microcontrollers/What-constitutes-P-E-cycle-in-internal-flash-memory/m-p/524711#M7347 lpcware 2016-06-15T18:09:30Z