SPI rom 25Q20BWVIG - Reads only half part. Probably BUG

[ArT]

Michael, thank you for all your suggestion and we will check it carefuly - at the moment everything is working fine but I do not have exactly the same chip but few similar. I'll let you know when we will find issue.

If anyone else has similar issue please let us know in this topic, thanks.

[michael chiklis]

Hello,
today i've received new donor pcb which has same SPI rom chip.
Revelprog programmer was able to read it correctly, then i wrote on it my patient rom, no error occured
Probably it worked well because i used my sata computer power supply and SOIC-8 Clip for read/write directly on donor pcb rom (instead unsoldering the chip from its pcb).

[ArT]

Thanks Michael for updating info. I have also received these chips (alone) and all tests passed and everything works fine (even chip ID is recognized correctly). We will keep an eye on this possible issues and I'll let you know when we find something interesting.

[michael chiklis]

Thanks Michael for updating info. I have also received these chips (alone) and all tests passed and everything works fine (even chip ID is recognized correctly). We will keep an eye on this possible issues and I'll let you know when we find something interesting.

Well, then i can't figure out why i don't get proper read on this chip when is alone.

[ArT]

Have you tried it again (on new chip) or only in the past?

[michael chiklis]

No, i haven't tried to read or write new chip alone because i have worked on it directly on board (i don't want to unsolder it from new good board).
Yes, i've tried to read again old chip alone, i get always same problem (i can't work on old chip while is on old board because it has shorts and burned tracks).