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    Atmel ATMEGA328P-PU, 8bit AVR Microcontroller, ATmega, 20MHz, 1 kB, 32 kB Flash, 28-Pin PDIP

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    ATmega328P 8-Bit megaAVR picoPower Microcontrollers

    The Atmel ATmega328P Microcontroller is an 8-bit megaAVR device based on the AVR enhanced RISC architecture. Featured is picoPower technology that offers ultra-low power consumption and low-power sleep modes, ideal for battery powered applications.

    Microcontroller Features

    •20 MHz Max. Operating Frequency
    •Up to 20 MIPS at 20 MHz
    •32 KB Flash
    •1024 B EEPROM
    •2 KB SRAM
    •131 Instructions – Most single clock cycle execution
    •32 General Purpose Registers
    •23 GPIO
    •Power-on Reset and Programmable Brown-out Detection
    •Internal Calibrated Oscillator
    •External and Internal Interrupt Sources
    •Six Power-Saving Sleep Modes
    •Internal and External Interrupts
    •Fully Static Operation

    Peripheral Features

    •10-bit 15 ksps Analogue-to-Digital Converter (ADC) – 8 or 6 channels
    •Capacitive Touch Sense – 16 channels
    •Temperature Sensor
    •Two 8-bit Timers
    •One 16-bit Timer
    •Output Compare Module – 6 channels
    •Six PWM Channels
    •Programmable Serial USART
    •Master/Slave SPI Serial Interface
    •Byte-oriented 2-wire Serial Interface – I2C compatible
    •Programmable Watchdog Timer with Separate Oscillator
    •Analogue Comparator
    •Interrupt and Wake-up on Pin Change


    Family NameATmega
    Package TypePDIP
    Mounting TypeThrough Hole
    Pin Count28
    Device CoreAVR
    Data Bus Width8bit
    Program Memory Size1 kB, 32 kB
    Maximum Frequency20MHz
    RAM Size2 kB
    USB Channels0
    Number of PWM Units3
    Number of SPI Channels1
    Number of UART Channels0
    Number of CAN Channels0
    Typical Operating Supply Voltage1.8 → 5.5 V
    Number of I2C Channels1
    Number of USART Channels1
    Program Memory TypeFlash
    Number of Ethernet Channels0
    Dimensions37.4 x 6.76 x 3.28mm
    Minimum Operating Temperature-40 °C
    Pulse Width Modulation2(6 x 8 bit), 6 x 16 bit
    Maximum Operating Temperature+85 °C
    Number of ADC Units1
    Instruction Set ArchitectureRISC
    Number of PCI Channels0
    ADCs6 x 10 bit
    Number of LIN Channels0
    Discontinued product