The software monitors and verifies independent grade-3 overcurrent and overvoltage protection , automatically cutting power within 100μs if a short circuit is detected to protect both the programmer and the PC.
If the software reads a chip successfully but fails during the verification phase of writing, double-check your chip selection. Ensure you selected the exact part number suffix (e.g., AT28C256 vs. AT28C256E), as voltage requirements vary slightly between variations. minipro tl866cs universal programmer software best verified