Los chips convertidores de USB a UART (Universal Asynchronous Receiver Transmitter) son una clase clave de componentes que ayudan a establecer la comunicación serie entre PC y dispositivos embebidos. Algunos chips puente USB a UART comunes son FT232, CH340, CP2102 y CH341, ¿qué son?
¿Qué es FT232?
Desarrollado por FTDI (Future Technology Devices International), el FT232 es un chip conversor de USB a serie ampliamente reconocido. Ha sido una elección popular durante muchos años debido a su robustez, fiabilidad y amplio soporte de controladores en diferentes sistemas operativos. El FT232 ofrece funciones avanzadas como el modo Bit Blast, que permite controlar cada pin individualmente, lo que lo hace adecuado para una amplia gama de aplicaciones más allá de comunicaciones serie estándar. Funciona con niveles lógicos de 5 V o 3,3 V y admite diversas velocidades de transmisión.
¿Qué es CH340?
El CH340 es un chip conversor de USB a serie producido por el fabricante chino WCH. Ampliamente utilizado debido a su bajo coste y disponibilidad, el CH340 es capaz de convertir señales USB a señales UART (Universal Asynchronous Receiver-Transmitter), lo que lo hace adecuado para conectar microcontroladores, placas Arduino y otros dispositivos a un ordenador. Soporta una gama de tasas de baudios y funciona con niveles lógicos de 5V o 3,3V. Sin embargo, puede requerir la instalación de controladores específicos, ya que algunos sistemas operativos no lo admiten por sí solos.
¿Qué es el CP2102?
Developed by Silicon Labs, the CP2102 is another popular USB-to-serial converter chip. It offers similar functionality to the CH340 with some significant differences. The CP2102 is known for its ease of use as it has a built-in driver, so additional drivers are usually not required on most operating systems. It supports multiple baud rates and operates at 5V or 3.3V logic levels. The CP2102 is favored for its reliability and compatibility across different platforms.
¿Qué es CH341?
The CH341, also manufactured by WCH, is another member of the CH34x family of USB-to-serial converter chips. It shares similarities with the CH340, but it offers some additional features. In addition to UART communication, the CH341 supports parallel, SPI, and I2C interfaces, making it a versatile choice for a variety of applications. Like the CH340, the CH341 may require specific drivers for some operating systems. It operates at 5V or 3.3V logic levels and supports a variety of baud rates.
Diferencia entre FT232, CH340, CP2102 y CH341
The FT232, CH340, CP2102, and CH341 USB-to-serial converter chips are all viable choices, each with their own features and applications. The CH340 and CP2102 are often chosen for their low cost, while the CP2102 stands out for its built-in drivers and ease of use. The CH341 offers interfaces other than UART, making it suitable for more complex projects. Finally, the FT232 is known for its reliability, extensive driver support, and advanced features.
