Arduino Uno is a microcontroller board based on 8-bit ATmega328P microcontroller. Along with ATmega328P, it consists other components such as crystal oscillator, serial communication, voltage regulator, etc. To support the microcontroller. 8 MHz (3.3V model) or 16 MHz (5V model) Arduino Pro Mini PINOUT RAW For supplying a raw (regulated) voltage to the board VCC The regulated 3.3 or 5 volt supply GND Ground pins RX Used to receive TTL serial data TX Used to transmit TTL serial data 2 and 3 Digital I/O pins. These pins can also be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value 3, 5, 6, 9, 10, and 11 Digital I/O pins. They can also be configured to provide 8-bit PWM output 10, 11, 12 and 13 Digital I/O pins. They can also be configured as SPI pins; 10 - (SS), 11 - (MOSI), 12 - (MISO) and 13 - (SCK) A0 to A3 Analog input pins A4 and A5. Analog input pins. They can also be used as IIC pins; A4 - (SDA) and A5 – (SCL). A6 and A7 Analog input pins Reset The microcontroller can be reset by bringing this pin low. Summary The high-performance Microchip 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1KB EEPROM, 2KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts,serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts. By executing powerful instructions in a single clock cycle, the device achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and processing speed. Samsung scx 4600.
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