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:- Parameters Values Program Memory Type Flash Program Memory Size (KB) 32 CPU Speed (MIPS/DMIPS) 20 SRAM (B) 2,048 Data EEPROM/HEF (bytes) 1024 Digital Communication Peripherals 1-UART, 2-SPI, 1-I2C Capture/Compare/PWM Peripherals 1 Input Capture, 1 CCP, 6PWM Timers 2 x 8-bit, 4 x 16-bit Number of Comparators 1 Temperature Range (°C) -40 to 85 Operating Voltage Range (V) 1.8 to 5.5 Pin Count 32 Low power Yes Related Document:- ATMEGA328P SMD Data Sheet
