Arduino Uno is a microcontroller board based on the ATmega328P (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz quartz crystal, 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.
Technical Specification
Microcontroller |
ATmega328P |
Operating Voltage |
5V |
Input Voltage (recommended) |
7-12V |
Input Voltage (limit) |
6-20V |
Digital I/O Pins |
14 (of which 6 provide PWM output) |
PWM Digital I/O Pins |
6 |
Analog Input Pins |
6 |
DC Current per I/O Pin |
20 mA |
DC Current for 3.3V Pin |
50 mA |
Flash Memory |
32 KB (ATmega328P) of which 0.5 KB used by bootloader |
SRAM |
2 KB (ATmega328P) |
EEPROM |
1 KB (ATmega328P) |
Clock Speed |
16 MHz |
LED_BUILTIN |
13 |
Length |
68.6 mm |
Width |
53.4 mm |
Weight |
25 g |