topic Re: KEA64 Internal EEPROM in Kinetis Microcontrollers

KEA64 Internal EEPROM

pmathew96 — Sun, 07 Nov 2021 12:44:08 GMT

How to read data from the internal EEPROM of S9KEA controller?I didn't find much information in the datasheet regarding this.

Re: KEA64 Internal EEPROM

jingpan — Tue, 09 Nov 2021 06:37:57 GMT

Hi @pmathew96 ,

Read EEPROM data from 0x10000000 to 0x100000FF. You can read them as a normal flash. For example, data=(*(unsigned char*)0x10000000).

Regards,

Jing

Re: KEA64 Internal EEPROM

pmathew96 — Tue, 09 Nov 2021 06:55:12 GMT

Hi,@jingpan

I found only option for read once(for reading the flash segment which can be programmed once).i didn't find the command for reading it,also didn't find the same on evk sample code

Re: KEA64 Internal EEPROM

jingpan — Tue, 09 Nov 2021 08:42:08 GMT

Hi @pmathew96 ,

yes, it seems there isn't such example.

Regards,

jing

Re: KEA64 Internal EEPROM

pmathew96 — Fri, 10 Dec 2021 12:05:27 GMT

Hi,I tried to write and read data from eeprom(0x10000000 to 0x100000FF).But data writing is not happening properly.please have a look on the attached screenshot.Here i had tried to write 0x23 to 10000040

after write commandbefore data writting

Re: KEA64 Internal EEPROM

jingpan — Mon, 13 Dec 2021 06:36:30 GMT

Hi @pmathew96 ,

Please refer to this link. People pasted their code. You can refer to it.

https://community.nxp.com/t5/Kinetis-Microcontrollers/KEA-64-suspends-during-internal-EEPROM-erasing/m-p/484900

Please Note that The EEPROM supports only byte access.

Regards,

Jing

Re: KEA64 Internal EEPROM

star333 — Fri, 02 Sep 2022 20:56:32 GMT

How do you find documentation about KEA64 EEPROM?

I am searching a long time for a example or documentation of KEA64 EEPROm