SPECIFICATIONS

Product information

UNO-R3 microcontroller official version of the development board

Product Introduction

This development board isa microcontroller development board with ATmega328P as the core.  It has 14 digital input and output feet, 6 analog inputs, 16Mhz crystal oscillator, square USB interface, power socket and ICSP connector.   Because of the bootloader, you can directly download the program through USB without passing through other external writers.   The power supply part can be directly supplied by USB, or use AC-to-DC adapter and battery as external power supply.

Product information

1.CH340 is replaced by ATmega16U2,which means that the cost is reduced by half.

Feature description

Using the high-speed microprocessing controller (ATMEGA328), the development operation interface and environment are very simple and easy to understand, which is very suitable for beginners to learn.

Performance description

Digital 1/0 The number of digital input/output terminals ranges from 0 to 13.

Analog 1/0 The analog input/output ranges from 0 to 5.

Supports ISP download.

Input voltage: No external power supply when connecting the computer USB, external power supply 5V-9V DC voltage input.

Output voltage: 5V DC output and 3.3V DC output.

Atmel Atmega328 microprocessing controller is adopted.

2. Uno Rev3 SMD is a microcontroller board based on ATmega328. It has 14 digital input/output pins (six of which can be used as PWM outputs), six analog inputs, a 16 MHz ceramic resonator (CSTCE16MOv53-RO), a USB connection, a power jack, an ICsP head, and a reset button. It contains everything you need to support a microcontroller; Just connect it to your computer with a USB cable, or use an AC/DC adapter or battery power to get stared.

Uno differs from all previous boards in that it does not use an FTDI USB-to-serial driver chip.

Additional features in R3 include:

The ATmega16U2 replaces the 8U2 as a USB-to-serial converter.

Pin 1.0: Added SDA and SCL pins for TWI communication, placed near AREF pins, another two new pins placed near RESET pins, IOREF allows shielding to adapt to the voltage provided by the board, and the second is an unconnected pin, which is reserved for the future.       Stronger RESET circuit.