Let’s Know About ATmega328P Atmega328P-PU consists of Dual in Line Package and it is pre-loaded with Optiboot boot loader. This IC will allow us to use code in your custom embedded projects without using an actual board. The chip will need an external 16Mhz crystal or resonator. It will need a 5V power supply. It has serial connections. ATMega328 is an 8-bit microprocessor. It is 28 pin Dual in Line Package. It has a double flash space. It has 32K of program space. It has 23 input-output lines. And 6 of which are channels for the 10 bits ADC. It runs on 20Mhz with external crystal. Its operating voltages are 1.8 to 5 Volts. Specs of Atmega: Number of Pins are 28 Architecture is 8-bit Operating. Temperature is -40 ~ 85°C Series is ATMega 4.5V-5.5V is its operating range Crystal used is Up to 20MHz it is the Part of ATMEGA328P-AU it has 32kB Flash program memory it has 1kB EEPROM it has 2kB Internal SRAM it has Two 8-bit Timer/Counters it has one 16-bit Timer/Counter it has RTC with separate oscillator it has 6 PWM Channels it has 8 Channel 10-bit ADC it has Serial USART it also has the Master/Slave SPI interface it has a 2-wire (I2C) interface it has a Watchdog timer it consists of 23 IO lines Data retention is about 20 years at 85oC/ 100 years at 25oC Applications of Atmega328P-PU: 1 it is used in the Burglar alarm system 2 it is used in Smoke and fire alarm system 3 it is used as Garage door controllers 4 we can use it as Car door controllers 5 it is used as a Car alarm system 6 it is used in the Security system 7 it is used in Cordless telephones 8 it is also used in Other remote control systems Package Contains: One ATMEL MICROCONTROLLER ATMEGA328P-PU (DIP-28)
