The Arduino Uno SMD is a version of the Arduino Uno, but uses a surface mount version of the Atmega328P instead of the through-hole version. This version was made in response to a shortage in supply of the through-hole Atmega328P. The board is based on the ATmega328 ).
It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.
The Uno differs from all preceding boards in that it does not use the FTDI USB-to-serial driver chip. Instead, it features the Atmega8U2 programmed as a USB-to-serial converter.
Specifications:
Microcontroller: ATmega328P
Operating voltage: 5V
Input voltage (recommended): 7-12V
Input voltage (limit values): 6-20V
Digital I / O Pin 14 (6 of them provide PWM output)
PWM Digital I / O Pinlar: 6
Analog Input Pin: 6
DC current per I / O Pin: 20 mA
3.3V Pin DC current: 50mA
Flash Memory 32 KB (ATmega328P) which is used by the 0.5 KB bootloader
SRAM: 2 KB (ATmega328P)
EEPROM: 1 KB (ATmega328P)
Clock Speed: 16 MHz
Length: 68.6 mm
Width: 53.4 mm
Weight: 25 g
Advantages:
1.completely solve the traditional UNO board win7 and win8 system is not compatible with the above instability. Especially in the pirated 64-bit WIN7 system, the official board can not be installed, and this version is very simple and easy to install.
2. Increase the pin socket, easy to use DuPont line.
3. Replace the 16u2, so that the cost reduced to half, consumers get the most benefits
Downloading the program is simple and convenient. You can simply use the sensor, a variety of electronic components connected (such as: LED lights, buzzers, buttons, photoresistors, etc.), to make all kinds of interesting works.
The use of high-speed microprocessor controllers (ATMEGA328), the development of user interface and environment are very simple, easy to understand, very suitable for beginners to learn.
Performance Description:
I / O digital input / output terminals 0 ~ 13.
I / O analog input / output terminals 0 ~ 5.
Support ISP download function.
Input voltage: connected to the computer USB without external power supply, external power supply 5V ~ 9V DC voltage input.
Output voltage: 5V DC voltage output and 3.3V DC voltage output.
Using Atmel Atmega328 microprocessor controller
