CP2102 is silbab developed USB to serial chip, compact and does not require any external components to be enough as a simple USB-UART program, communication speed up to 1Mbps, it is easy to upgrade to the USB port serial products, but because of its small size, but it is also MLP package, welding has some technical difficulty, so the owner has designed this compact USB-UART module, leads interface includes 5V, 3.3V, TXD, RXD, GND, which TXD, RXD directly connection to an MCU serial port, convenient for debugging the initial product, even 3.3V systems are also available from the module to take power (less than 100mA), LED display module has been powered on and working properly.
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