I'd lile to know the procedure in programming CFM memory area on EPM240xx devices.

Hi Asend,

This question should be same question from this thread, thus please refer to this thread:

https://forums.intel.com/s/question/0D70P000006AEL2/i-write-dfh-to-address-0-on-epm240t100c5n-by-the-programmer-security-is-imposed-on-the-cfm-area-and-only-00-can-be-readis-it-possible-to-explain-why-security-is-applied-even-though-security-bit-is-not-set-?s1oid=00DU0000000YT3c&s1nid=0DB0P000000U1Hq&emkind=chatterCommentNotification&s1uid=0050P000008ASID&emtm=1545215384598&fromEmail=1&s1ext=0

How did you get/generate the data to write into the CFM memory block? If you are using your own programmer, then you should be referring to the .pof or .svf file for the correct data that need to be write into the CFM memory block. You should convert the .pof file into a .svf file. The .svf file contain all the correct programming sequence and data that user can use to program the CFM + UFM. You can refer to the how to video on the steps to generate .svf file:

https://www.youtube.com/watch?v=L4R2NKekttw

Also you can refer to the attached document for an example of the .svf file.

Regards,

Nooraini