#Uno r3 software serial
#Uno r3 software code

Reset: Bring this line LOW to reset the microcontroller.AREF: Reference voltage for the analog inputs.There are a couple of other pins on the board: Support TWI communication using the Wire library. The Uno has 6 analog inputs, labeled A0 through A5, each of which provide 10 bits of resolution (i.e.1024 different values).Д«y default they measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and the analogReference() function.ДЄdditionally, some pins have specialized functionality: When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There is a built-in LED connected to digital pin 13. Provide 8-bit PWM output with the analogWrite() function. These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value.

#Uno r3 software serial

These pins are connected to the corresponding pins of the ATmega8U2 USB-to-TTL Serial chip. Used to receive (RX) and transmit (TX) TTL serial data. In addition, some pins have specialized functions: Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 k Ohms. Other Arduino Uno R3 Parts Input and OutputД®ach of the 14 digital pins on the Uno can be used as an input or output, using pin Mode (), digitalWrite(), and digitalRead() functions.

Power-save Mode: 0.75 в™љ (Including 32 kHz RTC).

28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF.

Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby.

External and Internal Interrupt Sources.

Power-on Reset and Programmable Brown-out Detection.

Programmable Watchdog Timer with Separate On-chip Oscillator.

Byte-oriented 2-wire Serial Interface (Philips I2 C compatible).

8-channel 10-bit ADC in TQFP and QFN/MLF package.

Real Time Counter with Separate Oscillator.

One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode.

Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode.

In-System Programming by On-chip Boot Program.

#Uno r3 software code

Optional Boot Code Section with Independent Lock Bits.Data retention: 20 years at 85вЊ/100 years at 25вЊ.4/8/16/32K Bytes of In-System Self-Programmable Flash program memory.High Endurance Non-volatile Memory Segments.32 x 8 General Purpose Working Registers.131 Powerful Instructions вЂ“ Most Single Clock Cycle Execution.The most important element in Arduino Uno R3 is ATMEGA328P-PU is an 8-bit icrocontroller