When designing the power supply for the ATmega328P microcontroller, it is essential to have decoupling capacitors very close to the die. It is a popular choice for DIY Arduino Power Supply Design The ATmega328P is a high-performance microcontroller with 32KB ISP flash memory with read-while-write capabilities. We must flash the Arduino bootloader onto the chip to program the ATmega328P onboard a custom PCB. The minimum temperature at which it operates is 40 degrees centigrade, and the maximum temperature is 105 degrees centigrade. The clock speed of the ATmega328P stands at 16 MegaHertz, and it has 14 I/O pins. It also has 2kb of SRAM and up to 1kb of EEPROM.
It has six analog input pins, and its memory can reach 32kb. The chip has several features, including low power consumption and fast processing speed, that promote its use in many applications. It has 28 pins, with many pins having more than one function. The ATmega328P is an 8-bit microcontroller based on AVR RISC architecture widely used in Arduino boards.