Arduino Uno 3 开发板

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Arduino Uno Rev. 3单片机开发板是基于Atmel的 ATmega328MCU。 Arduino Uno有14个数字输入/输出引脚（其中有6个可作为PWM输出），6个模拟输入，16MHz的晶振，一个USB接口，一个电源插孔，一个ICSP头和一个复位按钮。这款Arduino的MCU板包含支持微控制器所需的一切。只需用USB电缆或电源将其与AC-DC适配器或电池连接到电脑上手。 Arduino Uno和其他开发板不同的是它不使用FTDI USB来串行驱动器芯片。相反，它具有将Atmega8U2编程为一个USB串口转换器。 The Arduino Uno MCU板可以通过USB连接外部电源供电。电源会自动选择。Power

       

• Powered via USB connection or external power supply       
  
• - with power source selected automatically       
  
• External (non-USB) power from an AC-to-DC adapter       
  
• (wall-wart) or battery       
  
• Operates on external supply of 6 to 20V (7-12V recommended)
  

Memory

       

• 32KB flash memory (with 0.5KB used for the bootloader)       
  
• 2KB SRAM       
  
• 1KB EEPROM
  

Input and Output

       

• 14 digital pins that can be used as an input or output       
  
• 6 analog inputs, each of which provides 10 bits of resolution       
  
• (i.e. 1024 different values)
  

Physical Characteristics

       

• Max PCB length and width of 2.7in and 2.1in       
  
• USB connector and power jack extend beyond PCB       
  
• Communication        
  
• Designed to communicate with a computer,       
  
• another Arduino, or other microcontrollers       
  
• ATmega328 provides UART TTL (5V)       
  
• serial communication       
  
• On-board ATmega8U2 channels serial communication over USB       
  
• ATmega328 supports I²C (TWI) and       
  
• SPI communication
  

Programming

       

• Can be programmed with Arduino software       
  
• ATmega328 comes preburned with bootloader       
  
• for uploading new code without external       
  
• hardware programmer       
  
• MCU can be programmed through ICSP       
  
• (In-Circuit Serial Programming) header