Description
The Arduino Uno is a microcontroller board based on the ATmega328 (SMD chip: uses a surface mount version of the Atmega328P instead of the through-hole version.).
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 an AC-to-DC adapter or battery to get started.
Micro-controller : ATmega328.
Operating Voltage : 5V.
Input Voltage (recommended) : 7-12V.
Digital I/O Pins : 14 (of which 6 provide PWM output).
Analog Input Pins : 6.
Important: This Arduino UNO board is based on a Ch340 chip, so if you are unable to find the COM port, please install the CH340 driver from here.
Arduino UNO without Cable
| Model Type | UNO Rev R3 |
| Microcontroller Chip | ATmega328 |
| Operating Voltage (VDC) | 5 |
| Input Voltage(Recommended) | 7-12V |
| Input Voltage (limit) | 6-20V |
| Analog I/O Pins | 6 |
| Digital I/O Pins | 14 (of which 6 provide PWM output) |
| PWM Digital I/O Pins | 6 |
| DC Current per I/O Pin (mA) | 40 |
| DC Current for 3.3V Pin (mA) | 50 |
| Clock Speed | 16 MHz |
| SRAM | 2 |
| EEPROM | 1 KB (ATmega328) |
| Flash Memory | 32 KB |
| On Board LEDs | On/Off, L (PIN 13), TX, RX |
| Dimensions in mm (LxWxH) | 75 x 54 x 12 |
| Weight (gm) | 28 (without cable) |
| Shipment Weight | 0.08 kg |
| Shipment Dimensions | 9 × 6 × 4 cm |
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