Arduino Uno R3 INTRODUCTION Arduino is used for building different types of electronic circuits easily using of both a physical programmable circuit board usually microcontroller and piece of code running on computer with USB connection between the computer and Arduino. Programming language used in Arduino is just a simplified version of C++ that can easily replace thousands of wires with words. ARDUINO UNO-R3 PHYSICAL COMPONENTS ATMEGA328P-PU microcontroller The most important element in Arduino Uno R3 is ATMEGA328P-PU is an 8-bit Microcontroller with flash memory reach to 32k bytes. It’s features as follow: High Performance, Low Power AVR Advanced RISC Architecture 131 Powerful Instructions – Most Single Clock Cycle Execution 32 x 8 General Purpose Working Registers Up to 20 MIPS Throughput at 20 MHz On-chip 2-cycle Multiplier High Endurance Non-volatile Memory Segments 4/8/16/32K Bytes of In-System Self-Programmable Flash program memory 256/512/512/1K Bytes EEPROM 512/1K/1K/2K Bytes Internal SRAM Write/Erase Cycles: 10,000 Flash/100,000 EEPROM Data retention: 20 years at 85°C/100 years at 25°C Optional Boot Code Section with Independent Lock Bits In-System Programming by On-chip Boot Program True Read-While-Write Operation Programming Lock for Software Security Peripheral Features Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode Real Time Counter with Separate Oscillator Six PWM Channels 8-channel 10-bit ADC in TQFP and QFN/MLF package Temperature Measurement 6-channel 10-bit ADC in PDIP Package Temperature Measurement Programmable Serial USART Master/Slave SPI Serial Interface Byte-oriented 2-wire Serial Interface (Philips I2 C compatible) Programmable Watchdog Timer with Separate On-chip Oscillator On-chip Analog Comparator Interrupt and Wake-up on Pin Change Special Microcontroller Features Power-on Reset and Programmable Brown-out Detection Intern

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