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  6. Item#: 9SIC7BUM4A6566

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    2pcs CH341T USB to I2C and UART Serial Converter Module, USBTTL 3.3 V 5 V, Up to 2 Mbps

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    • 2In1 USB To I2C And UART Interface CH341T integrates USB to I2C and USB to TTL UART functions on one module; supports flexible protocol selection; reduces the need for multiple adapters; simplifies MCU communication, configuration, and serial programming tasks during development; Stable USB 2.0 FullSpeed Communication Built on the CH341T USB interface controller; supports USB 2.0 fullspeed operation; ensures reliable data transfer between PC and target device; maintains consistent communication for firmware download and parameter adjustment workflows; 3.3 V And 5.0 V TTL Logic Compatibility Supports standard 3.3 V and 5.0 V TTL logic levels; adapts to different MCU voltage requirements; reduces level mismatch risk; enables direct connection to common controller UART and I2C pins without extra converters; Up To 2 Mbps UART Data Rate Support UART interface supports baud rates up to 2 Mbps; enables fast serial communication; improves efficiency for code flashing and data logging; suitable for projects requiring responsive USB to serial data exchange; USB Powered With Clear Pin Layout Powered directly from the USB port; no external supply needed for basic operation; exposes TXD, RXD, SCL, SDA, VCC, and GND pins; simplifies wiring; compatible with for Arduino and similar MCU development platforms
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    Product Overview CH341T 2in1 USB Interface Module providing USB to I2C (IIC) and USB to UART/TTL conversion. Designed for MCU programming, communication, and debugging. Integrates original CH341T chip for stable USB interface and wide compatibility.
    1.
    Product Parameters Main IC: CH341T
    Function: USB to I2C and USB to UART converter
    USB Standard: USB 2.0 Full
    Speed Interfaces Supported: I2C (IIC), TTL
    UART Logic Level: 3.3 V / 5.0
    V TTL Baud Rate: Up to 2 Mbps
    Power Supply: USB powered
    Driver Support: CH341 drivers
    Operating Temperature: 40 °C to +85 °C
    2. Pin Function
    Description VCC (IN+): DC power output / logic supply
    GND: Power ground
    TXD: UART transmit output
    RXD: UART receive input
    SCL: I2C clock output
    SDA: I2C data input/output
    3. Common Questions & Answers (FAQ)
    Q1: What interfaces does this module support?
    A1: It supports USBtoI2C and USBtoTTL UART.
    Q2: Can it be used to program microcontrollers?
    A2: Yes, it works as a serial downloader for many MCUs.
    Q3: What voltage levels are supported?
    A3: It supports standard 3.3V and 5V TTL logic levels.
    Q4: Does it require drivers on a PC?
    A4: Yes, CH341 drivers are required for operation.
    Q5: Is it suitable for development and debugging?
    A5: Yes, it is widely used for MCU communication tasks.

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