Memory mapping for MC9s12xea

maddela_sai-tir — Thu, 30 Aug 2018 06:42:07 GMT

Hi team,

We are using MC9S12XE micro-controller and in the data sheet 128kb is splited in to two 64kb. pls help us how to reconfigure the Memory map . we want to create seg for Boot loader.

Re: Memory mapping for MC9s12xea

dianabatrlova — Fri, 31 Aug 2018 11:24:13 GMT

Hi Maddela,

From your description, I assume your MCU has 128 KB of Flash. In this case, 128 KB of the P-Flash is divided into two 64 KB blocks.

Each block is divided into 64 sectors of 1024 B.

See Appendix D Derivative Differences Table D-1. and chapter 24.1.2.1 P-Flash Features in the reference manual.

You can find the memory maps for S12XE devices in the attachment.

Very good start for programming bootloader for S12X MCU is AN4258 - Serial Bootloader for S12(X) Microcontrollers Based on 180 nm Technology

The software is located on this link:
http://www.nxp.com/files/microcontrollers/doc/app_note/AN4258SW.zip

I hope it helps you.

Best regards,

Diana

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Memory mapping for MC9s12xea

Re: Memory mapping for MC9s12xea