5/7/2024 0 Comments Arduino uno 328p datasheet**Master/Slave SPI Serial Interface (17, 18, 19 Pins) - SDA (Two-Wire Serial Bus Data Input/Output Line)** This is a shared clock line between this microcontroller and other systems for accurate data transfer. When acting as a slave, data sent by the master to the controller is received through this pin. **OC2 (Timer/Counter2 Output Compare Match Output)** When acting as a slave, incoming data from the master is received through this pin. **OC1B (Timer/Counter1 Output Compare Match B Output)** This pin is low when the microcontroller acts as a slave. **OC1A (Timer/Counter1 Output Compare Match A Output)** The divided system clock can be output on PB0. **OC0A (PWM - Timer/Counter0 Output Compare Match A Output)** **ILKO (Divided System Clock)** **OC0B (PWM - Timer/Counter0 Output Compare Match B Output)** ![]() ![]() ![]() **XTAL1 (Chip Clock Oscillator pin 1 or External clock input)** **OC2B (PWM - Timer/Counter2 Output Compare Match B Output)** PC6 can only be used as an I/O pin when the RSTDISBL Fuse is programmed. Below is a table describing the functions of each pin: Many pins of this microcontroller have multiple functions. The ATmega328P is a popular 8-bit microcontroller based on AVR RISC architecture, known for its high performance and low power consumption. It is commonly used in Arduino boards.
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