The CH341A pins are exposed and easy to connect to. You can buy cheap ribbon cables that plug directly into the header pins on the board. However, the weak signal driving capability sometimes makes in-circuit flashing difficult if other components on the board are loading the data lines.
, claiming read times as low as 3 seconds for common 8Mbit chips like the EN25T80 Automation ezp2023 vs ch341a
He connected it via USB-C. The device lit up with a clean white LED. No driver hunt—Windows recognized it instantly. He dropped the same chip into its ZIF socket, which had a smooth, reinforced lever. The software, modern and English-readable, reported voltage detection: 3.3V stable. Auto-IC detection in 0.4 seconds. The CH341A pins are exposed and easy to connect to
It costs $2–$10. It is everywhere. Support is baked into open-source tools like flashrom and NeoProgrammer. The Bad: It is slow, has serious voltage compatibility issues (3.3V logic on a 5V chip), and requires soldering modifications to work reliably with modern low-voltage chips. , claiming read times as low as 3
The CH341A uses a full-speed USB interface (12 Mbps). In reality, the SPI clock is locked to around 1.5 MHz to 2 MHz.