Catalog > Internet of Things (IOT) Related Products > More Platforms Arduino UNO R3 Board ATmega328 UNO R3 Board GTC ARDUINO COMP UNO REV3 ARDUINO COMPATIBLE UNO REV3 Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Overview The GTC 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. Specifications Microcontroller : ATmega328Operating Voltage : 5VInput Voltage (recommended) : 7-12VInput Voltage (limits) : 6-20VDigital I/O Pins : 14 (of which 6 provide PWM output)Analog Input Pins : 6DC Current per I/O Pin : 40 mADC Current for 3.3V Pin : 50 mAFlash Memory : 32 KB (ATmega328) of which 0.5 KB used by bootloaderSRAM : 2 KB (ATmega328)EEPROM : 1 KB (ATmega328)Clock Speed : 16 MHzLength : 68.6 mmWidth : 53.4 mmWeight : 25 g Downloads Schematic - Uno PDF File 198.09 KB