USB-TTL 3.3V5V UART Debug Cable - USB to Serial Converter...

Câble de débogage UART USB-TTL 3,3 V/5 V

Name: Câble de débogage UART USB-TTL 3,3 V/5 V
Brand: SYY Tech

USB-TTL 3.3V/5V UART debug cable designed for embedded development and serial port debugging, supporting switchable 3.3V and 5V logic levels. Built with CP2102 or CH340 chipset, it provides stable UART communication for Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico and other MCU boards. Plug-and-play on Windows, macOS, Linux and Android, with TX, RX, GND and VCC clearly defined for quick prototyping, firmware flashing and hardware troubleshooting.

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Categories: Câbles de conversion USB vers série

Description

This USB-TTL UART debug cable is a practical tool for embedded engineers, hobbyists and production technicians who need to add a TTL serial port to modern computers or debug microcontroller-based devices. It is widely used for Arduino programming, ESP32/ESP8266 firmware flashing, STM32 serial debugging, Raspberry Pi Pico testing, sensor data reading, industrial module configuration and prototype verification.

The module supports both 3.3V and 5V TTL logic levels, making it compatible with most low-voltage microcontrollers, wireless modules, sensors and legacy 5V serial peripherals. The onboard voltage switch or jumper selection allows users to quickly match the target device logic voltage, helping to avoid voltage mismatch risks during debugging.

Equipped with CP2102 or CH340 serial bridge chip, the cable supports standard baud rates from 300bps to 1.5Mbps, covering most common UART debugging scenarios. The output pins include TX, RX, GND and VCC, providing a clear and convenient connection for breadboards, development boards and custom circuits. It supports automatic flow control in most development environments and works seamlessly with serial terminal software, firmware upload tools and AT command testing utilities.

The USB-TTL debug cable is plug-and-play on most operating systems, including Windows 7/8/10/11, Windows Server, macOS, Linux and Android. For embedded developers, it offers a low-cost but reliable way to view debug logs, send AT commands, upgrade firmware and validate UART communication without additional serial expansion cards.

Standard cable lengths of 1m, 1.5m and 3m are available. We also support custom cable length, pin definition, housing color, logo printing and private-label packaging for bulk orders.

Switchable 3.3V / 5V TTL logic level for wide device compatibility
CP2102 or CH340 chipset, stable UART serial communication
Supports 300bps to 1.5Mbps baud rate for most debug scenarios
TX / RX / GND / VCC output pins, easy for prototyping and flashing
Plug-and-play on Windows, macOS, Linux and Android
Ideal for Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico and sensors
Custom length, pin layout, logo and packaging supported for bulk orders

Specifications

Item	Specification
Chipset	CP2102 / CH340 optional
Interface	USB 2.0 Type-A Male to TTL UART 4pin Terminal
Logic Voltage	3.3V / 5V switchable
Output Pins	TX, RX, GND, VCC
Baud Rate Range	300bps ~ 1.5Mbps
Supported Devices	Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico, sensors, wireless modules
Supported OS	Windows 7/8/10/11, Windows Server, macOS, Linux, Android
Application	UART debugging, firmware flashing, AT command test, sensor data reading, prototype verification
Standard Length	1m, 1.5m, 3m
Custom Service	Custom length, pin definition, logo printing, private packaging, OEM bulk orders

FAQ

Q: What chips are used in this USB-TTL debug cable?

A: It is usually equipped with CP2102 or CH340 chipset, both of which are widely used for USB to TTL serial communication in embedded development.

Q: Does it support both 3.3V and 5V devices?

A: Yes, it supports switchable 3.3V and 5V TTL logic levels, making it compatible with most low-voltage microcontrollers and 5V serial peripherals.

Q: What devices can be debugged with this cable?

A: It is suitable for Arduino, ESP32, ESP8266, STM32, Raspberry Pi Pico, wireless modules, sensors and other UART-based devices.

Q: What are the output pins?

A: The output pins generally include TX, RX, GND and VCC, which can be used for serial communication and power supply during debugging.

Q: Does it require a driver?

A: Most modern operating systems support automatic driver installation. For older systems, you may need to install the CP2102 or CH340 driver manually.

Q: Can it be used to flash firmware to ESP32 or ESP8266?

A: Yes, it is commonly used for firmware flashing, AT command testing and serial log viewing in ESP32 and ESP8266 projects.

Q: Can I customize the cable length and pin definition?

A: Yes, we support custom cable length, pin definition, logo printing and private-label packaging for bulk OEM orders.