CH341A

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]

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.

See also

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