CH343P Type-C to UART TTL Serial Converter Module
High-speed USB-to-Serial Bridge – Next-Gen Replacement for CH340
Overview
The CH343P is a next-generation USB bus conversion chip that provides a high-speed asynchronous serial port via a modern Type-C interface. Compatible with USB V2.0, this module enables seamless serial communication for embedded systems, microcontroller debugging, and legacy peripheral upgrades. With built-in firmware and support for automatic baud rate detection up to 6Mbps, it delivers reliable performance without the need for external crystals or oscillators.
Key Features
- • Type-C Full Speed Interface – Compatible with USB V2.0, plug-and-play simplicity
- • High-Speed Serial – Supports baud rates from 50bps to 6Mbps with automatic detection at 115200bps and below
- • Flexible Voltage Levels – Serial I/O operates at 1.8V, 2.5V, 3.3V, or 5V; USB side accepts 5V or 3.3V
- • Built-in Power-On Reset & Clock – No external crystal oscillator required
- • MODEM Control Signals – Full support for RTS, DTR, DCD, RI, DSR, and CTS
- • Hardware Flow Control – CTS/RTS auto-flow control for reliable data transfer
- • Half-Duplex with TNOW – Supports RS485 switching via TNOW signal
- • RS232 Compatible – External level converter enables RS232 interface
- • Onboard EEPROM (CH343P) – Configurable VID, PID, and max current parameters
- • Unique USB Serial Number – Embedded chip ID for easy device identification
- • Driver Support – Built-in CDC drivers on modern OS; optional high-speed VCP vendor drivers
- • Windows Compatible – Emulates standard serial port, no modification needed for existing applications
- • Data Bit Options – 5, 6, 7, or 8 data bits with odd, even, mark, space, or no parity
- • RoHS Compliant – Lead-free packages (SOP16, ESSOP10, QFN16)
Specifications
| Interface | Type-C (USB V2.0 full speed) |
| Baud Rate Range | 50 bps – 6 Mbps (auto-detect at ≤115200 bps) |
| Serial Voltage (I/O) | 1.8V / 2.5V / 3.3V / 5V |
| USB Supply Voltage | 5V or 3.3V |
| Data Bits | 5, 6, 7, or 8 |
| Parity Modes | Odd, even, mark, space, none |
| MODEM Signals | RTS, DTR, DCD, RI, DSR, CTS |
| Flow Control | CTS/RTS hardware auto-flow control |
| Half-Duplex Support | Yes (TNOW for RS485 switching) |
| RS232 Support | Via external level converter |
| Onboard Memory | EEPROM (CH343P) – configurable VID/PID/current |
| Dimensions | 35 mm x 13 mm |
| Package Options | SOP16, ESSOP10, QFN16 (RoHS) |
Important Note: For RS232 operation, an external level converter is required. The module supports half-duplex communication with TNOW signal for RS485 switching. Driver installation may vary depending on operating system; Windows users benefit from built-in CDC drivers or optional high-speed VCP vendor drivers.
Package Includes
- • 1 x CH343P Type-C to UART TTL Serial Converter Module (35mm x 13mm)
Need help? Our support team is ready to assist. Message us with any questions about installation, compatibility, or specifications — we're here to help you get the most from your CH343P module.
Shipping
- We currently ship within Australia only.
- Orders are processed and dispatched as soon as possible (usually within 12 hours after payment is cleared).
- Please note that Australia Post delivery times are estimates only and may vary due to location, weather, or postal delays.
- We use Australia Post Domestic Regular Letter (Untracked) for some items. This is sent as a standard post letter and does NOT include tracking.
- If your item has not arrived within 2 weeks, please contact us and we will assist you.
- Free postage includes packing and fast dispatch via Australia Post where applicable.
- Occasionally, Australia Post sorting facilities may not update tracking or scan events consistently. Please do not worry — we will ensure your order is delivered.
Returns
- We offer a 60-day return policy. Please contact us within 60 days of receiving your order if you have any issues or wish to return the item.
- All returned items must be in original packaging and include all accessories.
- Please provide your eBay ID, reason for return, and tracking number (if applicable).
- Refunds will be issued for the full item amount upon receipt and inspection, after both buyer and seller cancel the transaction on eBay, or a replacement can be arranged.
- Buyer is responsible for return shipping costs.
Important Notes (Electronic Modules / DIY Parts)
- For electronic modules and DIY components, please test the item as soon as you receive it.
- If there are any genuine quality issues, please contact us immediately and we will provide a suitable solution.
- However, we do not provide warranty or support for damage caused by:
- Use outside of the intended design/specification
- Circuit modifications or alterations
- Incorrect wiring or misuse
- Over-voltage, over-current, or improper handling