topic Re: Can I run a FLASH write routine from FLASH? in S12 / MagniV Microcontrollers https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Can-I-run-a-FLASH-write-routine-from-FLASH/m-p/204387#M8283 <HTML><HEAD></HEAD><BODY>Yes, you can erase &amp; program one flash block while running in another. You cannot erase or program the flash block in which you are running.<BR /><DIV></DIV></BODY></HTML> Fri, 21 Nov 2008 01:10:18 GMT Steve 2008-11-21T01:10:18Z Can I run a FLASH write routine from FLASH? https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Can-I-run-a-FLASH-write-routine-from-FLASH/m-p/204386#M8282 <HTML><HEAD></HEAD><BODY><DIV>Can I erase a part of flash with a program in FLASH? Or do I have to erase flash from a RAMprogram?</DIV><DIV>&nbsp;</DIV><DIV>This is what I like to do:</DIV><DIV>&nbsp;</DIV><DIV>I use the MC9S12XDP512 with 512k flash. I want to store data at page $E8-$EF (block 2, 128k). All other FLASH is for program code. Sometimes I would like to change the data located in block 2. Is it possible to do that with a FLASH routine executing from FLASH or do I have to change the data from a&nbsp;RAM routine? My idea is to have the FLASH routines in the unpaged&nbsp;FLASH area.</DIV></BODY></HTML> Thu, 20 Nov 2008 22:29:30 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Can-I-run-a-FLASH-write-routine-from-FLASH/m-p/204386#M8282 pederalm 2008-11-20T22:29:30Z Re: Can I run a FLASH write routine from FLASH? https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Can-I-run-a-FLASH-write-routine-from-FLASH/m-p/204387#M8283 <HTML><HEAD></HEAD><BODY>Yes, you can erase &amp; program one flash block while running in another. You cannot erase or program the flash block in which you are running.<BR /><DIV></DIV></BODY></HTML> Fri, 21 Nov 2008 01:10:18 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Can-I-run-a-FLASH-write-routine-from-FLASH/m-p/204387#M8283 Steve 2008-11-21T01:10:18Z