The CH341A’s I/O pins are 5V tolerant but output 5V logic high. Most modern SPI flash chips (Winbond 25Q series, Top, Macronix) run on . Feeding them 5V logic causes:
When your programmer throws this error, it's usually due to hardware instability rather than a "broken" chip. The CH341A’s I/O pins are 5V tolerant but
If Step 1 fails, you must fix the voltage. If Step 1 fails, you must fix the voltage
When we say that the contents of a chip’s main memory are "in disagreement," we refer to a mismatch between two or more expected states. Typically, this arises during a verify operation after writing: the programmer reads back the data from the chip and compares it byte-for-byte with the original source file. A disagreement means that one or more memory locations hold a value different from what was intended. Alternatively, it can occur when reading the same chip twice yields inconsistent results. In either case, the memory chip has failed to maintain a faithful record of data—a critical failure for firmware storage, BIOS chips, or configuration EEPROMs. A disagreement means that one or more memory