7Semi CH340C USB-C to Serial TTL Converter Breakout

This is a USB-to-TTL serial converter breakout board using the CH340C chipset and a USB-C connector. It translates USB signals to standard TTL-level serial (RX / TX) signals, making it simple to interface microcontrollers or other UART devices with a USB host (like a PC). It also includes indicator LEDs for transmit/receive activity.

Technical Specifications:

• Chip: CH340C
• USB Connector: USB Type-C
• Serial Interface: TTL level (RX, TX)
• Logic Voltage: Supports 3.3 V and 5.0 V levels (selectable)
• Indicators: TX and RX LEDs
• Power Input: From USB (5 V supply)
• Operating Temperature: –40 °C to +85 °C (typical for CH340 devices)
• Board Dimensions: Compact breakout form (small footprint)
• Pinout: GND, RX, TX, VCC, plus optional enable / control pins

Features:

• USB-C reversible connector for ease of use
• Converts USB to TTL serial without extra hardware
• Selectable 3.3 V / 5 V logic for compatibility
• LED indicators for data transmission / reception
• Low-cost, compact breakout suitable for prototyping

Applications:

• Programming or debugging microcontrollers over serial
• Serial console interface for embedded systems
• USB to UART link in IoT devices
• Logging or data acquisition via UART to PC
• Upgrading older TTL serial devices to USB connectivity