ATMEGA328-AU More Semiconductors - ICs by Microchip Technology

Status: Active
Series: ATmega328
RoHS: Compliant
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The high-performance Microchip 8-bit AVR® RISC-based microcontroller combines 32 KB ISP Flash memory with read-while-write capabilities, 1 KB EEPROM, 2 KB 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 Two-Wire serial interface, SPI serial port, 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 throughputs approaching one MIPS per MHz, balancing power consumption and processing speed.

Prices starting from US$1.77


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Logo for element14 element14 US$2.33
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Logo for Newark Electronics Newark Electronics US$2.09
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Logo for Farnell Farnell US$2.32
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Logo for Microchip Technology Microchip Technology US$1.77
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Logo for Future Electronics Future Electronics US$2.11
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Logo for Chip One Stop Chip One Stop US$1.79
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Logo for Micros Micros US$2.28
713
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Logo for Distrelec Distrelec US$2.50
316
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Logo for Transfer Multisort Elektronik Transfer Multisort Elektronik US$2.17
234
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Logo for Avnet America Avnet America US$2.42
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Logo for EBV Elektronik EBV Elektronik -
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Specifications

Program Memory Type Flash
Program Memory Size (KB) 32
CPU Speed (MIPS/DMIPS) 20
Data EEPROM (bytes) 1024
Capture/Compare/PWM (CCP) 1
Max 8 Bit Digital Timers 2
Number of ADCs 0
ADC Channels 8
Max ADC Resolution (bits) 10
Number of Comparators 1
Temp. Range Min. -40
Temp. Range Max. 85
Operation Voltage Max.(V) 5.5
Operation Voltage Min.(V) 1.8
Pin Count 32
Low Power No
Pins | Packaging 32 | TQFP
Temp Range -40C to +85C
Packing Media Tray (250)

Resources



Application Notes
AN_2585 - AVR151: Setup and use of the SPI on tinyAVR and megaAVR devices
AN_2561 - AVR310: Using the USI Module as a I2C Master
AN_8456 - AVR127: Understanding ADC parameters
AN_1497 - AVR035: Efficient C Coding for 8-bit AVR microcontrollers
AN_1619 - AVR040: EMC Design Considerations
AN_1493 - AVR072: Accessing 16-bit I/O Registers
AN_8468 - AVR1200: Using External Interrupts for megaAVR Devices
AN_2566 - AVR465: Single-Phase Power/Energy Meter with Tamper Detection
AN_2563 - AVR054: Run-time calibration of the internal RC oscillator via the UART
AN_2505 - AVR130: Using the timers on tinyAVR and megaAVR devices
AN_8103 - AVR340: Direct Driving of LCD Using General Purpose IO using tinyAVR and megaAVR devices
AN_8089 - AVR515: Migrating from ATmega48/88/168 and ATmega48P/88P/168P/328P to ATtiny48/88
AN_2508 - AVR182: Zero Cross Detector
AN_1143 - AVR236: CRC check of Program Memory on tinyAVR and megaAVR devices with LPM instruction
AN_1232 - AVR240: 4x4 Keypad-Wake Up on Keypress on tinyAVR and megaAVR devices
AN_8020 - AVR136: Low-jitter Multi-channel Software PWM
AN_8017 - AVR446: Linear speed control of stepper motor on tinyAVR and megaAVR devices
AN3320 - AVR318: Dallas 1-Wire Master on tinyAVR and megaAVR
AN2665 - Interfacing AVR Microcontrollers with Serial memories
AN_8002 - AVR055: Using a 32kHz XTAL for run-time calibration of the internal RC
AN_2560 - AVR312: Using the USI Module as a I2C Slave
AN_8016 - AVR323: Interfacing GSM Modems
AN_0932 - AVR100: Accessing the EEPROM on tinyAVR and megaAVR devices
AN_8053 - AVR351: Runtime calibration and compensation of RC oscillators
AN_2568 - AVR911: AVR Open-source Programmer
AN_2577 - AVR317: Using the USART on the ATmega48/88/168 as a SPI master
AN_2558 - AVR221: Discrete PID Controller on tinyAVR and megaAVR Devices
AN_1644 - AVR109: Using Self Programming on tinyAVR and megaAVR devices
AN_0934 - AVR128: Setup and Use of the AVR Analog Comparator
AN_1259 - AVR134: Real Time Clock (RTC) Using the Asynchronous Timer
AN_1631 - AVR201: Using the 8-bit AVR Hardware Multiplier
AN_42055 - AT1886: Mixing Assembly and C with AVRGCC
AN_1981 - AVR155: Accessing an I2C LCD Display using the AVR 2-Wire Serial Interface
AN_2557 - AVR303: SPI-UART Gateway on tinyAVR and megaAVR devices
AN_2596 - AVR443: Sensor-based Control of Three Phase Brushless DC Motor
AN2462 - AVR231: AES Bootloader
AN_1231 - AVR242: Multiplexing LED Drive & a 4x4 Keypad on tinyAVR and megaAVR devices
AN_2569 - AVR241: Direct driving of LCD display using general I/O on tinyAVR and megaAVR devices
AN_2555 - AVR053: Calibration of the internal RC oscillator
AN_42559 - AT15007: Differences between ATmega328/P and ATmega328PB
AN_8010 - AVR447:Sinusoidal driving of three-phase permanent magnet motor using ATmega48/88/168
AN_1451 - AVR306: Using the AVR UART in C on tinyAVR and megaAVR devices
AN2519 - AVR Microcontroller Hardware Design Considerations
AN_2540 - AVR104: Buffered Interrupt Controlled EEPROM Writes
AN_2546 - AVR105: Power efficient high endurance parameter storage in tinyAVR and megaAVR devices Flash memory
AN_8012 - AVR444: Sensorless control of 3-phase BLDC motors based on tinyAVR and megaAVR devices
AN_8003 - AVR121: Enhancing ADC resolution by oversampling
AN_8014 - AVR135: Using Timer Capture to Measure PWM Duty Cycle on tinyAVR and megaAVR devices
AN_2583 - AVR316: SMBus Slave Using the TWI Module on tinyAVR and megaAVR devices
AN_8091 - AVR341: Four and five-wire Touch screen Controller using tinyAVR and megaAVR devices
AN_1472 - AVR350: Xmodem CRC Receive Utility for AVR
AN_8108 - AVR122: Calibration of the AVR`s Internal Temperature Reference
AN_8128 - AVR186: Best practices for the PCB layout of Oscillators
AN_0943 - AVR910: In-System Programming
AN_1268 - AVR133: Long Delay Generation Using the AVR Microcontroller
AN_7653 - AVR140: ATmega48/88/168 family run-time calibration of the Internal RC oscillator
AN_2551 - AVR132: Using the Enhanced Watchdog Timer
AN_2559 - AVR120: Characterization and Calibration of the ADC on an AVR
AN_2565 - AVR311: Using the TWI module as I2C slave on tinyAVR and megaAVR devices
AN2480 - AVR315: Using the TWI Module as I2C Master
AN_2575 - AVR106: C Functions for Reading and Writing to Flash Memory
AN_8453 - AVR4027: Tips and Tricks to Optimize Your C Code for 8-bit AVR Microcontrollers
AN_7546 - AVR495: AC Induction Motor Control Using the Constant V/f Principle and a Space-vector PWM Algorithm
AN2538 - AVR126: ADC of megaAVR in Single-Ended Mode
AN_8365 - AVR205: Frequency measurement made easy with tinyAVR and megaAVR
AN_32194 - AVR116: Wear Leveling on DataFlash
AN_8184 - AVR232: Authentication Using SHA-256
AN_2532 - AVR243: Matrix Keyboard Decoder on tinyAVR and megaAVR devices
AN2648 - Selecting and Testing 32 KHz Crystal Oscillators for AVR Microcontrollers
AN2468 - Production Programming of Microchip AVR and SAM Microcontrollers
AN_42787 - AVR42787: AVR Software User Guide
AN_2527 - AVR223: Digital Filters on tinyAVR and megaAVR devices
AN_2526 - AVR101: High Endurance EEPROM Storage
AN_42784 - AVR284: Software Library for AES-128 Encryption and Decryption on megaAVR
AN2447 - Measure VCC/Battery Voltage Without Using I/O Pin on tinyAVR and megaAVR
Core Independent Peripherals on AVR
AN2466 - Using Atmel-ICE for AVR Programming In Mass Production

Board Design Files
ATmega328 IBIS Model



Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.3383
Shipping Weight (kg) 0.8
Lead Count 32
Package Type TQFP
Package Width or Size 7x7x1.0mm
Soldering Composition Matte Tin

Alternative Descriptions

MCU, 8BIT, ATMEGA, 20MHZ, TQFP-32 | element14
Mcu, 8Bit, Atmega, 20Mhz, Tqfp-32 | Newark Electronics
20 MHz, TQFP, Ind Temp, Green | Microchip Technology
ATmega Series 32 KB Flash 2 KB SRAM 20 MHz 8-Bit Microcontroller - TQFP-32 | Future Electronics
MCU 8-Bit AVR 32KB Flash 2.5/3.3/5V | RS
MCU 8-bit ATmega AVR RISC 32KB Flash 2.5V/3.3V/5V 32-Pin TQFP | Micros
Microchip AVR RISC Microcontroller Flash 32KB TQFP 20MHz | Distrelec
IC: AVR microcontroller | Transfer Multisort Elektronik


Frequently Asked Questions

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What category does ATMEGA328-AU fall under?

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Is the ATMEGA328-AU RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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Authorised distributors including element14, Newark Electronics, Farnell, Microchip Technology and Future Electronics have stock available or on a lead time for ATMEGA328-AU.

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