Hi,

Looks like you have experience in programming SLE4442. I just want to ask something regarding what you've write.

I have a problem and can't figured-out, I have a 10 engineering samples in my hand in it my co-engineer bought so i have no idea.

when i'm developing this SLE4442 i don't have idea about security code, i ask my co-engineer what is the 3 bytes security code and he answered "i don't know". So i pressume the security code is default 3 0xff. I don't know if my knowledge is correct.

During the process i don't know what is happening to me, i can read the ATR w/c is A2 13, 10, 91.

I tried to write sample data to address 0x20 with the value of 0x11 (command is - 0x38,0x20,0x11) and i tried to read it with (0x30,0x20,1) but received 0xff.

I followed the one written in the datasheet page 21 PSC verification but still don't work.

Hope you or anybody could help me, thanks