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Microchip Technology ATMEGA32U4-AU

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    ATMEGA32U4-AU this integrated circuit is available in factory sealed anti static packs. at Please read product page below detail information. including ATMEGA32U4-AU price, data-sheet, in-stock availability, technical difficulties. Also. Quickly Enter the access of compare listing to find out replaceable electronic parts. If you want to retrieve comprehensive data for ATMEGA32U4-AU to optimize the supply chain (including cross references, life-cycle, parametric, counterfeit risk, obsolescence managements forecasts), please contact to our Tech-supports team.

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    ATmega32U4-AU Typical application Circuitry


    The ATmega32U4-AU is an 8-bit microcontroller from Microchip's AVR family that is low-power and high-performance. It has a 32KB self-programming flash program memory, 2.5KB SRAM, 1KB EEPROM, a USB 2.0 full-speed/low-speed device, a 12-channel 10-bit A/D converter, and a JTAG port for on-chip debugging. An explanation of a typical application circuit is provided below:

    1. Power Supply: The microcontroller operates at a voltage range of 2.7V - 5.5V. VCC and AVCC pins should be connected to a clean and stable power supply. Decoupling capacitors are typically placed near these pins to filter out high-frequency noise in the power supply.

    2. Clock Source: The ATmega32U4-AU can operate on an internal calibrated oscillator, but for higher precision, an external crystal oscillator is recommended. The external oscillator, usually between 8 MHz to 16 MHz, is connected to the XTAL1 and XTAL2 pins.

    3. Reset Mechanism: Reset circuitry is needed to ensure proper operation. A push-button switch tied to the RESET pin, along with a pull-up resistor, is often used to prevent unintentional resets.

    4. USB Interface: The ATmega32U4-AU includes a USB 2.0 module. To enable USB communication, the D+ and D- pins should be connected to a USB connector via 22 ohm series resistors.

    5. Programming Interface: The microcontroller can be programmed using the In-System Programming (ISP) method, which requires connections to the SPI (MOSI, MISO, SCK) pins and RESET pin.

    6. GPIO: The ATmega32U4-AU has numerous General Purpose Input/Output (GPIO) pins that can be used for interfacing with various peripherals, such as LEDs, buttons, sensors, and more.

    7. ADC Inputs: If your application requires analog-to-digital conversion, the microcontroller's ADC inputs (ADC0 - ADC7, ADC8 - ADC11) can be used.

    This is a general description of an application circuit for the ATmega32U4-AU microcontroller. The exact setup will depend on the specifics of your application. Always refer to the ATmega32U4-AU datasheet and application notes for detailed and specific implementation guidelines.

    ATMEGA32U4-AU informationATMEGA32U4-AU information


    1. How to order ATMEGA32U4-AU on

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    We have a professional and experienced quality control team to strictly verify and test the ATMEGA32U4-AU. All suppliers must pass our qualification reviews before they can publish their products including ATMEGA32U4-AU on; we pay more attention to the channels and quality of ATMEGA32U4-AU products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.

    3. Are the ATMEGA32U4-AU price and inventory displayed accurate?

    The price and inventory of ATMEGA32U4-AU fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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    6. What is the process for return or replacement of ATMEGA32U4-AU?

    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the ATMEGA32U4-AU we delivered, we will accept the replacement or return of the ATMEGA32U4-AU only when all of the below conditions are fulfilled:

    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

    (2)We are informed of the defect described above within 90 days after the delivery of ATMEGA32U4-AU.

    (3)The PartNo is unused and only in the original unpacked packaging.

    Two processes to return the products:

    (1)Inform us within 90 days

    (2)Obtain Requesting Return Authorizations

    7.How to contact us to get technical supports, such as ATMEGA32U4-AU pin diagram, ATMEGA32U4-AU datasheet?

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