ARDUNIO UNO-R3 SMD Board compatible with Arduino


In stock

The Uno R3 CH340G ATmega328p Development Board is the low-cost version of the popular Uno R3 Arduino. It is assembled with the CH340 USB to Serial converter chip, instead of using an Atmega16U2 chip.

We have used plenty of these low-cost Arduino boards with CH340 chips, and have found them to work perfectly. The only time the CH340 chip is used is during programming and when using the serial output of the USB port. During normal operation, this board is identical to the more expensive version without CH340 chip.

SKU: NEPL008 Categories: , ,

Additional Information

Additional information

Weight 26 g
Dimensions 75 × 54 × 12 mm


  • Compatible with Arduino+ Easy To Use
  • Digital Input/Output Pins are 14 (of which 6 can be used as PWM outputs), 6 analog inputs
  • The Operating Voltage is 5V, DC Current for each input/output pin is 40 mA, DC Current for 3.3V Pin is 50 mA
  • Flash Memory is 32 KB, SRAM is 2 KB

Technical Specification

Model Type Arduino Uno R3
Microcontroller Chip ATmega328 (SMD) – Interface CH340G
Operating Voltage (VDC) 5
Input Voltage(Recommended) 7-12V
Input Voltage (limit) 6-20V
Analog I/O Pins 6
Digital I/O Pins 14 (of which 6 provide PWM output)
PWM Digital I/O Pins 6
DC Current for 3.3V Pin (mA) 50
DC Current per I/O Pin (mA) 40
Clock Speed 16 MHz
EEPROM 1 KB (ATmega328)
Flash Memory 32 KB
Power Supply Option DC Jack or USB
On Board LEDs On/Off, L (PIN 13), TX, RX
Operating Temperature (°C) -40 to 90
Dimensions in mm (LxWxH) 75 x 54 x 12
Weight (gm) 26



No products in the cart.