MPC5604B RAM and FLASH power on self test

[283230333]

Hi,

I'm useing the MPC5604B . We want to develop the self test of the device now. So we want to know are there some power on slef test about RAM and FLASH that already exist in the MPC5604B?  CRC? Checksum?ECC? We really want to your help!!

Thanks

Logan

[lukaszadrapa]

Hi,

there are no built-in self tests on this device. But both RAM and Flash implements ECC mechanism. Take a look at this application note for more details about ECC:

http://www.nxp.com/files/microcontrollers/doc/app_note/AN5200.pdf

http://www.nxp.com/files/microcontrollers/doc/app_note/AN5200SW.zip

For flash memory, you can also use Flash Array Integrity Check function. Here you can find SW example and explanation of the function:

Example MPC5604B Flash Array Integrity Check - using SSD flash drivers

Then you can write own self test for RAM memory if necessary - I believe you can find a lot of information about algorithms on the web: walking 1's, walking 0's and others...

Regards,

Lukas

[nxppower912935]

Hi Lukas,

I'm currently investigating (specifying) RAM-Tests for our AUTOSAR project and was wondering how Selftest for MPC57xx devices looks like? Any AN that I can read or sw samples? There might be another posting already for 57xx devices, I will search this.

Kind regards,

Ludwig

[lukaszadrapa]

Hi Ludwig,

take a look at:

http://www.nxp.com/assets/documents/data/en/application-notes/AN5131.pdf 

http://www.nxp.com/assets/documents/data/en/application-notes-software/AN5131SW.zip 

http://www.nxp.com/assets/documents/data/en/application-notes/AN5288.pdf 

http://www.nxp.com/assets/documents/data/en/application-notes/AN5196.pdf 

(there will be more for MPC5744P in next one or two months)

http://www.nxp.com/assets/documents/data/en/engineering-bulletins/EB823.pdf

http://www.nxp.com/assets/documents/data/en/engineering-bulletins/EB837.pdf

Regards,

Lukas