[CH341A] [8 in 1] BIOS Programmer Set (1.8V / 3.3V / 5V) SPI Flash USB Programming Module + SOIC8/SOP8 Test Clip

CH341A / CH341B USB Interface Chip — Functionally Identical

This listing includes CH341A and CH341B chips, which are functionally identical in terms of performance and supported interfaces. Orders will be shipped randomly with either version. If you have a strict preference, please contect us before purchasing.

Key Information:

• Same Functionality:
  CH341A and CH341B support the same features, including USB to UART (serial), SPI, and I²C interfaces — making them suitable for tasks such as BIOS flashing, serial communication, and EEPROM programming.

• Clock Configuration Differences:

  • CH341A / CH341T / CH341H require an external crystal oscillator and capacitors.

  • CH341B / CH341F / CH341C offer the option to use either an external crystal or their built-in internal clock, providing more flexibility for compact designs.

• Supports Common Serial Interfaces:
  All variants (CH341A, CH341B, CH341F) support a range of synchronous serial protocols, including:

  • 2-wire interfaces (SCL, SDA)

  • 4-wire SPI interfaces (CS, SCK, MISO, MOSI)

Product Description:

CH341A Programmer Set for 24/25 Series USB Programming Module + SOIC8/SOP8 Test Clip with FT232BL Chip [1.8V adapter included]

This programming module set features the FT232BL chip with an external EEPROM (93C46), supporting Windows 10 and offering flexible power supply modes, including 5V and 3.3V external power options. The module is equipped with three indicator LEDs (TXD, RXD, and Power) and outputs for GND, RXD, TXD, 3.3V, and 5V through angled pin headers.

Designed for advanced users, the module includes solder points for additional function pins (CTS, RTS) and can connect to MCUs or other systems via standard pin connections. It simplifies in-circuit programming through its SOIC8/SOP8 test clip, which directly connects to chips for fast and efficient programming without desoldering.

Additionally, this programmer supports various chip series, including 24/25/26/93, and can work with multiple devices like computers, automotive MCUs, and mobile devices. The test clip provides reliable connections without the need for complex operations, ensuring user-friendly functionality while handling tasks like BIOS flashing and embedded system programming.

Product Features:

• Uses FT232BL chip with external EEPROM (93C46).
• Supports Windows 10.
• Supports three power supply modes: 5V external power supply, 3.3V external power supply, or powered by an external device (requires 3.3V-5V). Supports programming 1.8V chips with adapter.
• Equipped with 3 LEDs: TXD LED, RXD LED, POWER LED.
• GND, RXD, TXD, 3V3, and 5V: output via angled pin headers.
• Additional function pins: CTS and RTS reserved on the board for soldering.

Instructions (Example: connecting to an MCU):

• GND: Connect to GND.
• RXD: Connect to MCU TX (Signal flow: MCU TX >> FT232 >> PC RX).
• TXD: Connect to MCU RX (Signal flow: MCU RX << FT232 << PC TX).
• 3V3/5V: Outputs 3.3V or 5V (powered by USB, ensure the jumper is set to 3.3V or 5V).
• RTS: Connect to MCU CTS (Signal flow: MCU CTS << FT232 << PC RTS).
• CTS: Connect to MCU RTS (Signal flow: MCU RTS >> FT232 >> PC CTS).

Program:

CH341B-NeoProgramer  (recommend)

asprogrammer-dregmod