Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have specialized functions: Serial: 0 (RX) and 1 (TX). If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. Warnings The Arduino Uno has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Input Voltage (limit) Digital I/O Pins PWM Digital I/O Pins Analog Input Pins DC Current per I/O Pin DC Current for 3.3V Pin Flash Memory SRAM EEPROM Clock Speed LED_BUILTIN Length Width Weight 6-20V 14 (of which 6 provide PWM output) 6 6 20 mA 50 mA 32 KB (ATmega328P) of which 0.5 KB used by bootloader 2 KB (ATmega328P) 1 KB (ATmega328P) 16 MHz 13 68.6 mm 53. SKU: 8058333490137 Country of origin: IT Taric: 85235210 EECN: EAR-99 HTS: 84 Getting Started: Overview The Arduino Uno SMD R3 is a microcontroller board based on the ATmega328. Arduino Uno Rev3 SMD The board everybody gets started with, based on the ATmega328 (SMD).
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