The CH341A USB Programmer is a compact yet powerful tool widely used for programming 24-series EEPROMs and 25-series SPI Flash chips. Equipped with the CH341A USB interface chip, it's ideal for BIOS flashing, firmware updates, STC MCU programming, and embedded system debugging. This device is essential for electronics repair professionals, hackers, and enthusiasts working with BIOS recovery, microcontroller programming, and chip-level diagnostics.

Supported Chip Types:

I²C EEPROM – 24xxx Series

Supported models include:

• 24C01, 24C02, 24C04, 24C08, 24C16, 24C32, 24C64, 24C128, 24C256, 24C512, 24C1024 GitHub

SPI Flash – 25xxx / 26xxx Series

Supported models include dozens across multiple brands:

• AMIC: A25L512, A25L05P, A25L10P, A25L010, A25L020, A25L20P, A25L40P, A25L040, A25L080, A25L80P, A25L016, A25L16P, A25L032

• ATMEL: AT25F512 / AT25F512B / AT25F512A, AT25FS010, AT25F1024 / AT25F1024A, AT25F2048, AT25DF021, AT25F4096, AT25FS040, AT25DF041A, AT26F004, AT26DF081A, AT25DF161, AT26DF161 / AT26DF161A, AT25DF321A / AT26DF321, AT25DF321, AT25DF641

• COMMON: 25X005, 25X05, 25X10, 25X20, 25X40, 25X80, 25X16, 25X32, 25X64, 25X128, 25X256, 25X512, 25X1024, 25X2048 Phipps Electronics

• EON: EN25F05, EN25P05, EN25LF05, EN25F10, EN25LF10, EN25D10, EN25P10, EN25F20, EN25D20, EN25LF20, EN25F40, EN25D40, EN25LF40, EN25Q80, EN25D80, EN25F80, EN25P80, EN25T80, EN25B16T, EN25T16, EN25B16, EN25D16, EN25F16, EN25Q16, EN25P32, EN25Q32, EN25F32, EN25B32, EN25B32T, EN25Q64, EN25B64, EN25F64, EN25B64T, EN25F128, EN25Q128

• ES: ES25P10, ES25P20, ES25M40A, ES25M40, ES25P40, ES25M80, ES25M80A, ES25P80, ES25M16, ES25M16A, ES25P16, ES25P32

• ESMT: F25L04UA, F25L004A, F25L08PA, F25L008A, F25L016A, F25L16PA, F25L32QA, F25L32PA
  Note: ESMT SST series 25 chips can be read but not written due to limitations of the programmer’s architecture. Phipps Electronics+1

Other Supported EEPROMs

Via adapters and compatible software (e.g., IMSProg), the programmer can also handle:

• MicroWire EEPROM (93xxx series): 93C46, 93C56, 93C66, 93C76, 93C86

• DataFlash (AT45DBxxx series) via adapter GitHub

Features:

• Automatic Chip Detection for 25-series SPI Flash types

• LED Indicators for both 24 and 25 series activity

• USB-to-TTL Functionality for serial interface and debugging

• Selectable Voltage Output: 3.3V and 5V

• Compact Dimensions: 70 × 27 mm

• Perfect for BIOS flashing, firmware reprogramming, STC microcontrollers, and I²C/SPI EEPROM programming

Applications:

• Flashing BIOS and firmware chips

• EEPROM recovery and cloning

• Embedded system prototyping and debugging

• Custom chip-level repair services