Micro Controller Board FR-4 Microcontroller Module ATMEGA328P Development Board Micro V3.0 Expansion Module CH340 USB Chip with USB Cable

Features: Power supply The development board can be powered by for Mini-B USB connection 6-20V unregulated external power supply (pin 30) or 5V regulated external power supply (pin 27). The power supply is automatically selected to the highest voltage source. 14 digital pins All 14 digital pins on the controller board can be used as input or output. They work at 5 volts. Each pin can provide or receive a maximum current of 40mA and the internal pull-up resistor (disconnected by default) is 20-50 kiloohms. In addition some pins have specialized functions. 8 analog inputs It has 8 analog inputs each of which provides 10-bit resolution. By default their measurement range is from ground to 5 volts but you can also use the for analogReference() function to change the upper limit of their range. Analog pins 6 and 7 cannot be used as digital pins. Communicating devices The CH340 USB chip has many devices that communicate with computers or other microcontrollers. Such as for UART TTL (5V) serial communication and for I2C (TWI) and for SPI communication. High performance Use for Atmel Atmega328P-AU microcontroller support for ISP download use the same chips for Atmega328P and CH340 as the official version. Specifications: Item type: Micro Controller Board Material: FR-4 Color: blue 14 digital input/output ports: TX RX D2~D13 8 analog input ports: A0~A7 1 pair of TTL level serial port transceiver ports: RX/TX 6 PWM ports: D3 D5 D6 D9 D10 D11 USB download and power supply: support External 5V~12V DC power supply: support 9V battery power supply: support ISP download: support Three power supply methods: USB VIN external 5V input Item size: 4.3*1.8*1.8cm/1.69*0.71*0.71inch(L*W*H) Weight: 6g/0.21oz