Arduino UNO R3 SMD Atmega328P Board

Arduino Uno R3 CH340G ATmega328P Development Board

The Arduino Uno R3 CH340G ATmega328P is an affordable alternative to the classic Arduino Uno R3, featuring the CH340 USB-to-Serial converter chip in place of the Atmega16U2 chip. Despite the lower cost, this board delivers reliable performance, making it a great choice for both beginners and experienced developers.

We’ve extensively tested these budget-friendly Arduino boards with the CH340 chip and found them to work flawlessly. The CH340 chip is only active during programming and when using the USB port’s serial output, so during regular operation, this board functions identically to the more expensive version without the CH340 chip.

Key Updates:

• Dual rows of holes for pins (Male and Female) allow for easy connections with standard Female Jumpers.
• Additional three rows of holes for flexible wiring options.
• ATmega328P microcontroller in a flat SMD package.
• CH340G replaces the Atmega16U2.

Specifications:

• Microcontroller: ATmega328 (SMD) with CH340G interface
• Operating Voltage: 5V
• Input Voltage (Recommended): 7-12V
• Input Voltage (Limit): 6-20V
• Analog I/O Pins: 6
• Digital I/O Pins: 14 (6 with PWM output)
• PWM Digital I/O Pins: 6
• DC Current for 3.3V Pin: 50 mA
• DC Current per I/O Pin: 40 mA
• Clock Speed: 16 MHz
• SRAM: 2 KB (ATmega328)
• EEPROM: 1 KB (ATmega328)
• Flash Memory: 32 KB (ATmega328) with 0.5 KB used by bootloader
• Power Supply: DC Jack or USB
• Onboard LEDs: Power (On/Off), L (Pin 13), TX, RX
• Operating Temperature: -40 to +90°C
• Dimensions: 75 x 54 x 12 mm
• Weight: 26 g

Getting Started:

1. Download the Arduino IDE from here.
2. Download the USB chip driver from here.
3. Plug in the UNO development board; the driver will install automatically.
4. Select “UNO” from the board options.
5. Choose the appropriate COM port.
6. Start developing with your Arduino board preloaded with sample programs.

Package Includes:

• 1 x Arduino Uno R3 CH340G ATmega328P Board