Arduino UNO R3 ATmega328P Compatible with Arduino
|Analog I/O Pins||6|
|Digital I/O Pins||14|
|PWM Output Pins||6|
|Clock Speed||16 MHz|
|DC Current per I/O Pin||
DC Current per I/O Pin: 40 mA; For 3.3V Pin: 50 mA
|Flash Memory||32 KB (ATmega328) of which 0.5 KB used by the bootloader|
|EEPROM||1 KB (ATmega328)|
|SRAM||2 KB (ATmega328)|
This UNO R3 Board is compatible with Arduino and is based on Atmega328. The Uno R3 can be powered via a USB connection or with an external power supply.
The Uno R3 has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega328 provides UART TTL (5V) serial communication, which is available on digital pins 0 (RX) and 1 (TX). An ATmega16U2 on the board channels this serial communication over USB and appears as a virtual com port to software on the computer.
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