Asprogrammer+21013 ⚡ Trusted
Inside ASProgrammer:
One of the biggest points of confusion in forums is the term "21013." asprogrammer+21013
Strictly speaking, there is no official IC called the "CH21013." This is almost always a typo or OCR error for the CH341A. Inside ASProgrammer: One of the biggest points of
The Bottom Line: When you search for asprogrammer+21013, what you actually need is ASProgrammer fully configured for the CH341A programmer. The Bottom Line: When you search for asprogrammer+21013
ASProgrammer is a lightweight, powerful flashing utility written by npro. It was designed to replace the archaic Chinese software (often named CH341A.exe or NeoProgrammer) that typically comes with CH341A-based programmers.
The 21013 error frequently appears when the SOIC8 clip is not making contact. Even a single floating pin (especially CS - Chip Select or MISO - Master In Slave Out) will cause ASProgrammer to timeout and report 21013. The software is strict; one bad connection equals a hard failure.
If the SPI flash is completely blank (all 0xFF or 0x00) or has its status register locked (SRP0/SRP1 bits set), the chip will not send its Manufacturer ID back to the programmer. ASProgrammer waits for that ID, fails, and logs Error 21013.
