3/13/2023 0 Comments Ch341a 1.34![]() under the 25SPI EEPROM choice, the only chip makers listed are AMTEL and MICROCHIP, and the closest i could find to the chip type was AMTEL AT25128. I know it's not the latest, but i can't find a reliable download source for anything higher than 1.34. Second thing is (don't know if this is an issue or not) i'm using the 1.34 version of the CH341A programmer for WIndows. ![]() so at this point, each set of reads seems viable, but only if you don't take into account two different CH341A's. the only positive is that the mismatches occur in the same place. ![]() there weren't very many and it amounted to the 5.0v read showing 00 values where the 3.3v read shows FF. the problem is that the 5.0v reads had some mismatches with the 3.3v reads. multiple reads with the green PCB (3.3v) were consistent with each other. multiple reads with the black PCB (5.0v) were consistent with each other. i used a SOIC8 clip to read a Winbond 25LC128FVFG (hard to tell because the lettering is worn away a bit). after more research, i found a CH341A with green PCB board that was 3.3v (confirmed by multi-meter). ![]() while continuing my research, i discovered the CH341A (with black PCB board) supplied 5.0v and for reading that was OK, but could potentially burn out the EEPROM during writing. I initially bought a CH341A so i could do some BIOS re-programming on a couple of laptops (Lenovo T450S).
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