The Arduino Uno is a microcontroller board 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 ceramic resonator, 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 Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU mode.
Revision 3 of the board has the following new features:
Specifications:
ARDUINO MICROCONTROLLER | |
Microcontroller | ATmega328 |
Architecture | AVR |
Operating Voltage | 5 V |
Flash memory | 32 KB of which 0.5 KB used by bootloader |
SRAM | 2 KB |
Clock Speed | 16 MHz |
Analog I/O Pins | 6 |
EEPROM | 1 KB |
DC Current per I/O Pins | 40 mA on I/O Pins; 50 mA on 3,3 V Pin |
GENERAL | |
Input Voltage | 7-12 V |
Digital I/O Pins | 20 (of wich 6 provide PWM output) |
PWM Output | 6 |
PCB Size | 53.4 x 68.6 mm |
Weight | 25 g |
The Arduino Uno is a microcontroller board 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 ceramic resonator, 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 Atmega16U2 (Atmega8U2 up to version R2) programmed as a USB-to-serial converter.
Revision 2 of the Uno board has a resistor pulling the 8U2 HWB line to ground, making it easier to put into DFU mode.
Revision 3 of the board has the following new features:
Specifications:
ARDUINO MICROCONTROLLER | |
Microcontroller | ATmega328 |
Architecture | AVR |
Operating Voltage | 5 V |
Flash memory | 32 KB of which 0.5 KB used by bootloader |
SRAM | 2 KB |
Clock Speed | 16 MHz |
Analog I/O Pins | 6 |
EEPROM | 1 KB |
DC Current per I/O Pins | 40 mA on I/O Pins; 50 mA on 3,3 V Pin |
GENERAL | |
Input Voltage | 7-12 V |
Digital I/O Pins | 20 (of wich 6 provide PWM output) |
PWM Output | 6 |
PCB Size | 53.4 x 68.6 mm |
Weight | 25 g |