ARDUINO_UNO

 ARDUINO UNO

ARDUINO UNO is a microcontroller board based on the Atmega328P . It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53-R0), a USB connection, a power jack, an ICSP header and a reset button

 ARDUINO UNO KIT

ARDUINO PIN OUT DIAGRAM

 

Arduino Uno Technical Specifications

Microcontroller	ATmega328P – 8 bit AVR family microcontroller
Operating Voltage	5V
Recommended Input Voltage	7-12V
Input Voltage Limits	6-20V
Analog Input Pins	6 (A0 – A5)
Digital I/O Pins	14 (Out of which 6 provide PWM output)
DC Current on I/O Pins	40 mA
DC Current on 3.3V Pin	50 mA
Flash Memory	32 KB (0.5 KB is used for Bootloader)
SRAM	2 KB
EEPROM	1 KB
Frequency (Clock Speed)	16 MHz

Pin Description Pin Category   Pin Name Details Power                           Vin, 3.3V, 5V, GND Vin: Input voltage to Arduino when using an external power source. 5V: Regulated power supply used to power microcontroller and other components on the board. 3.3V: 3.3V supply generated by on-board voltage regulator. Maximum current draw is 50mA. GND: ground pins. Reset Reset Resets the microcontroller. Analog Pins A0 – A5 Used to provide analog input in the range of 0-5V Input/Output Pins Digital Pins 0 - 13 Can be used as input or output pins. Serial 0(Rx), 1(Tx) Used to receive and transmit TTL serial data. External Interrupts 2, 3 To trigger an interrupt. PWM 3, 5, 6, 9, 11 Provides 8-bit PWM output. SPI 10 (SS), 11 (MOSI), 12 (MISO) and 13 (SCK) Used for SPI communication. Inbuilt LED 13 To turn on the inbuilt LED. TWI A4 (SDA), A5 (SCA) Used for TWI communication. AREF AREF To provide reference voltage for input voltage.