Hi , really need help to correctly read/program that's chip
I got a Dual power Willem Programmer with a TSOP32 14MM adaptor for the 39SF020A and I'm not able to get a correct manufactureres ID , i'm getting 0x90 0x90 or 0xFF 0xFF trying the PCB3 or Willem setting and trying many Dip setting too.
My chip are good , I got like 5 brand new chip and i'm getting same result. My programmer is good also cause I already program many PIC and other eeprom with it.
I need an hint to get it work please for the SST chips please! tx for you help. I've added a picture , except for the dip, there's is something else wrong on my board??