Arduino Uno R3 CH340G ATmega328P Development Board (SMD)

The Uno R3 CH340G ATmega328P Development Board is a highly efficient, cost-effective 8-bit microcontroller board designed for rapid hardware prototyping, automated embedded systems, and STEM learning applications. It serves as a fully compatible alternative to the standard Arduino Uno R3 architecture, featuring a high-reliability CH340G USB-to-Serial converter chip in place of the traditional Mega16U2 interface. Mirroring the identical form factor, performance capabilities, and pinout layout of the original board, it is an ultra-affordable foundation for programming sensor networks, motor matrices, and custom automated electronics.

Key Specifications

• Core Microcontroller: Microchip/Atmel ATmega328P (8-bit AVR RISC architecture)
• USB-to-Serial Driver: CH340G Interface IC (optimized for programming and high-speed serial terminal communication)
• Microcontroller Package Style: SMD / SMT (Surface Mount Device)
• Operating Voltage: 5 V DC
• Input Voltage (Recommended): 7 V to 12 V DC (via DC Barrel Jack or Vin terminal)
• Input Voltage (Absolute Limits): 5 V to 20 V DC max
• Digital I/O Pins: 14 Channels (including 6 pins with hardware PWM output)
• Analog Input Pins: 6 Channels (10-bit resolution ADCs)
• DC Current per I/O Pin: 20 mA standard continuous rating
• Flash Memory Capacity: 32 KB (with 0.5 KB utilized by the onboard bootloader)
• SRAM / EEPROM Storage: 2 KB Internal SRAM / 1 KB non-volatile EEPROM
• Clock Frequency: 16 MHz Crystal Oscillator
• PC Interface: Reversible USB Type-B Female Socket
• Dimensions: Standard CR-Uno Footprint (68.6 mm × 53.4 mm)

Package Includes

• 1 x Uno R3 CH340G ATmega328P Development Board (SMD)

Note: Image is for representation purpose only.