ARDDU-031366 – ARDUINO UNO R3 MICROCONTROLLER BOARD BASED ON ATMEGA328 AND 16U2
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 712V
Input Voltage (limits) 620V
Digital I/O Pins 14 (of which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328) of which 0.5 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz