https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Bootloader-execution-of-flash-write-flash-erase-functions-from/m-p/1460800#M18665 <P>Hi,</P><P>&nbsp;</P><P>I am following simple serial Bootloader for S12 application note.</P><P>Why the functions like flash erase and flash write are being executed from RAM? Could you please provide the reason .</P><P>Thanks in Advance</P> Thu, 19 May 2022 10:20:16 GMT AjRj14 2022-05-19T10:20:16Z https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Bootloader-execution-of-flash-write-flash-erase-functions-from/m-p/1460800#M18665 <P>Hi,</P><P>&nbsp;</P><P>I am following simple serial Bootloader for S12 application note.</P><P>Why the functions like flash erase and flash write are being executed from RAM? Could you please provide the reason .</P><P>Thanks in Advance</P> Thu, 19 May 2022 10:20:16 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Bootloader-execution-of-flash-write-flash-erase-functions-from/m-p/1460800#M18665 AjRj14 2022-05-19T10:20:16Z https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Bootloader-execution-of-flash-write-flash-erase-functions-from/m-p/1460930#M18666 <P>Hi,</P> <P>&nbsp;</P> <P>It is valid for entire S12 family that it is not allowed to execute code out of the memory block which is currently E/W.<BR />This fact includes into consideration usage of interrupts (routines placement and/or their enable) as well as execution of the code which waits for the E/W command complete inside the flash memory. Because of this the code is moved to RAM.</P> <P>Best regards,</P> <P>Ladislav</P> Thu, 19 May 2022 13:17:31 GMT https://community.nxp.com/t5/S12-MagniV-Microcontrollers/Bootloader-execution-of-flash-write-flash-erase-functions-from/m-p/1460930#M18666 lama 2022-05-19T13:17:31Z