Hi! i try make this hardware. im order at factory PSB and sucsessfily make and download firmware - the first copy of OSD at max7456eui+. ОК!

Then, at next time i bye max7456eui+w from polida2008 at ebay, PSB arduino cpu and other components as in first copy, i make 2 PCS board, but both show filling screen with 777777456 repitable sequence. two weeks of cheking and resolding and changes spi parameters of spi in src havnt result. do you know what difference between max7456eui+ and max7456eui+w ? Thanks

Did you try to find the datasheet? I've never seen that before.

cant find datasheet for "w" chip Maxim says dont produce this. maybe it chinesse fake