Article · Wikipedia archive · Last revised Jul 18, 2026

CH341A

CH341A-based programmers are cheap USB dongles usually used for reprogramming SPI chips. SPI EEPROM chips are found in many electronic devices.

Last revised
Jul 18, 2026
Read time
≈ 1 min
Length
98 w
Citations
2
Source
Wikipedia ↗
CH341A
TypeDongle

CH341A-based programmers are cheap USB dongles usually used for reprogramming SPI chips. SPI EEPROM chips are found in many electronic devices.1

Risks

CH341A programmers usually only output 5 V. If used with chips that require 3.3 V on the data lines, it could irreversibly break them. Some BIOS chips, for example, require 3.3 V. For a safer alternative, see the Raspberry Pi Pico.2

See also

See also

References

References

  1. electronics, semaf (2026-01-25), semaf/CH341-USB-EEPROM-Flash-BIOS-Programmer, retrieved 2026-02-02
  2. "Libreboot – Read/write 25XX NOR flash via SPI protocol". Libreboot – Read/write 25XX NOR flash via SPI protocol. Retrieved 2026-02-02.