ATMEGA328-MU Family Name, Microchip ATMEGA328-MU, 8bit AVR Microcontroller, ATmega, 20MHz, 32 kB Flash, 32-Pin QFN/MLF

ATmega328 8-Bit megaAVR Microcontrollers
The Atmel ATmega328 Microcontroller is an 8-bit megaAVR device based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle the ATmega328 achieves throughputs approaching 1 MIPS per MHz, balancing power consumption and speed.
Microcontroller Features
20 MHz Max. Operating FrequencyUp to 20 MIPS at 20 MHz32 KB Flash1024 B EEPROM2 KB SRAM131 Instructions – Most single clock cycle execution32 General Purpose Registers23 GPIOPower-on Reset and Programmable Brown-out DetectionInternal Calibrated OscillatorExternal and Internal Interrupt SourcesFive Power-Saving Sleep ModesInternal and External InterruptsFully Static Operation
Peripheral Features
10-bit 15 ksps Analogue-to-Digital Converter (ADC) – 8 or 6 channelsCapacitive Touch Sense – 16 channelsTemperature SensorTwo 8-bit TimersOne 16-bit TimerOutput Compare Module – 6 channelsSix PWM ChannelsProgrammable Serial USARTMaster/Slave SPI Serial InterfaceByte-oriented 2-wire Serial Interface – I2C compatibleProgrammable Watchdog Timer with Separate OscillatorAnalogue ComparatorInterrupt and Wake-up on Pin Change