Description
The Arduino UNO R3 Atmega328P with CH340 USB is a microcontroller board based on the ATmega328P. It is one of the most popular models in the Arduino board family and is often used for DIY electronics projects, hobbyist inventions, and educational purposes. The board is equipped with a CH340 USB-to-serial converter, which allows it to be connected to a computer via USB for programming and communication purposes. The Atmega328P microcontroller has 32KB of flash memory, 2KB of SRAM, and 1KB of EEPROM, and runs at a clock speed of 16MHz. The Arduino UNO R3 is compatible with a wide range of shields (expansion boards) and has several digital and analog input/output pins, making it easy to interface with sensors, actuators, and other components.
Additional features compared to the Arduino UNO R3 from Arduino Italy:
– 3.3V LDO “U5” can deliver 200mA continuously (original Arduino UNO R3 only 150mA)
– additional tie points 3.3V, 5V, GND, SCL, and SDA for easier I2C bus access
– precisely 16MHz crystal with 0.003% error
The Arduino UNO R3 Atmega328P was originally designed with a simple 16MHz resonator which made it impossible to use it for clock applications. The advanced design comes with a proper 16MHz crystal for much higher stability.
A set of male pin headers, to use access the additional signal pads, is included with every Arduino UNO R3 controller.