The ATMEGA328P is a low-power CMOS 8-bit microcontroller based on the AVR® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATMEGA328P achieves through puts approaching 1MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 

The high-performance Power 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1024B 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, a 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 through puts approaching 1 MIPS per MHz, balancing power consumption and processing speed.

Features:-

• High-performance, Low-power Atmel AVR 8-bit Microcontroller 

• Advanced RISC Architecture 

   - 131 powerful instructions – most single clock cycle execution 

   - 32 × 8 General Purpose Working Registers + Peripheral Control Registers 

   - Fully Static Operation 

   - Up to 16MIPS Throughput at 16MHz 

   - On-chip 2-cycle Multiplier

• High Endurance Non-volatile Memory segments 

   - 32K bytes of in-system self-programmable flash program memory 

   - 1Kbytes EEPROM 

   - 2Kbytes internal SRAM 

   - Write/erase cycles: 10,000 flash/100,000 EEPROM 

   - Data retention: 20 years at 85°C/100 years at 25°C(1) 

   - 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 

    – Programmable serial USART 

    – Master/Slave SPI Serial Interface 

    – Programmable Watchdog Timer with On-chip Oscillator 

    – On-chip Analog Comparator 

    – Byte Oriented 2-wire Serial Interface 

    – Interrupt and Wake-up on Pin Change 

• Special Microcontroller Features 

   – Power-on Reset and Programmable Brown-out Detection 

   – Internal Calibrated RC Oscillator 

   – External and Internal Interrupt Sources 

   – Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and  Extended Standby '

• I/O and Packages 

    ̶  23 programmable I/O lines 

    ̶  32-lead TQFP, and 32-pad QFN/MLF 

• Operating voltage 

   – -40C to 85C Industrial 

• Speed Grades

   – 0 to 8MHz at 2.7 to 5.5V (automotive temperature range: –40°C to +125°C) 

   – 0 to 16MHz at 4.5 to 5.5V (automotive temperature range: –40°C to +125°C) 

• Low power consumption  

     ̶  Active mode: 1.5mA at 3V - 4MHz 

     ̶  Power-down mode: 1µA at 3V 

Specification:-

Related Document:-

 ATMEGA328P SMD Data Sheet