Products > Integrated Circuits (ICs) > Embedded Processors & Controllers > ATMEGA324PB-MU

Images are for reference only.


Hot Sale

8 Bit MCU, AVR ATmega Family ATmega324 Series Microcontrollers, 20 MHz, 32 KB, 2 KB, 44 Pins, VQFN

  • Package/Case :
  • VQFN-44
  • Product Categories :
  • Microcontrollers
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 7444


Request for Quotation

Warm Tips: Please fill out the below form and we will contact you as soon as possible.

ATMEGA324PB-MU Product Details

The high-performance Microchip picoPower 8-bit AVR RISC-basedmicrocontroller combines 32kB ISP flash memory with read-while-writecapabilities, 1kB EEPROM, 2kB SRAM, 39 general purpose I/O lines, 32general purpose working registers, five flexible timer/counters withcompare modes, internal and external interrupts, three USARTs withwake-up on start of transmission, two byte-oriented 2-wire serialinterface, two SPI serial ports, one 8-channel 10-bit ADC with optionaldifferential input stage with programmable gain, programmable watchdogtimer with internal oscillator, a JTAG (IEEE 1149.1 compliant) testinterface for on-chip debugging and programming, and six softwareselectable power saving modes. The device operates between 1.8-5.5volts.

The ATMEGA324PB-MU features the successful QTouch PeripheralTouch Controller (PTC). The PTC acquires signals in order to detecttouch on capacitive sensors, and supports both self- andmutual-capacitance sensors. The ATMEGA324PB-MU PTC is supported by theMicrochip QTouch Composer development tool (QTouch Library projectbuilder and QTouch Analyzer). It provides a faster and less complexcapacitive touch implementation in any application.

It supports 32buttons in self-capacitance mode, or up to 256 buttons inmutual-capacitance mode. Mix-and-match mutual-and self-capacitancesensors is possible, and only one pin is required per electrode noexternal components are required, giving savings on the BOM costcompared to competing solutions.

By executing powerfulinstructions in a single clock cycle, the device achieves throughputsapproaching 1 MIPS per MHz, balancing power consumption and processingspeed.



  • Advanced RISC Architecture
    • 131 Powerful Instructions
    • Most Single Clock Cycle Execution
    • 32 x 8 General Purpose Working Registers
    • Fully Static Operation
    • Up to 20 MIPS Throughput at 20MHz
    • On-Chip 2-Cycle Multiplier
  • High Endurance Non-Volatile Memory Segments
    • 32KBytes 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
    • 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
    • Peripheral Touch Controller (PTC)
      • Capacitive Touch Buttons, Sliders and Wheels
      • 24 Self-Cap Channels and 144 Mutual Cap Channels
    • Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
    • Three 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and Capture Mode
    • Real Time Counter with Separate Oscillator
    • Ten PWM Channels
    • 8-channel 10-bit ADC in TQFP and QFN/MLF package
    • ThreeProgrammable Serial USARTs
    • Two Master/Slave SPI Serial Interfaces
    • Two Byte-Oriented 2-Wire Serial Interfaces (Philips I2C Compatible)
    • Programmable Watchdog Timer with Separate On-chip Oscillator
    • On-Chip Analog Comparator
    • Interrupt and Wake-Up on Pin Change
  • Special Microcontroller Features
    • Power-On Reset and Programmable Brown-Out Detection
    • Internal 8 MHz Calibrated Oscillator
    • External and Internal Interrupt Sources
    • Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
    • Clock Failure Detection Mechanism and Switch to Internal 8 MHz RC Oscillator in case of Failure
    • Individual Serial Number to Represent a Unique ID
  • I/O and Packages
    • 27 Programmable I/O Lines
    • 32-pin TQFP and 32-pin QFN/MLF
  • Operating Voltage:
    • 1.8 - 5.5V
  • Temperature Range:
    • -40°C to 105°C
  • Speed Grade:
    • 0 - 4MHz @ 1.8 - 5.5V
    • 0 - 10MHz @ 2.7 - 5.5.V
    • 0 - 20MHz @ 4.5 - 5.5V
  • Power Consumption at 1MHz, 1.8V, 25°C
    • Active Mode: 0.24mA
    • Power-Down Mode: 0.2μA
    • Power-Save Mode: 1.3μA (Including 32kHz RTC)

Technical Parameters

  • Core Processor
  • AVR
  • Core Size
  • 8-Bit
  • Speed
  • 20MHz
  • Connectivity
  • Peripherals
  • Brown-out Detect/Reset, POR, PWM, WDT
  • Number of I/O
  • 39
  • Program Memory Size
  • 32KB (16K x 16)
  • Program Memory Type
  • EEPROM Size
  • 1K x 8
  • RAM Size
  • 2K x 8
  • Voltage Supply (Vcc/Vdd)
  • 1.8V ~ 5.5V
  • Data Converters
  • A/D 8x10b
  • Oscillator Type
  • Internal
  • Operating Temperature
  • -40??C ~ 85??C (TA)
  • Mounting Type
  • Surface Mount
  • Package / Case
  • 44-VFQFN Exposed Pad
  • Supplier Device Package
  • 44-VQFN (7x7)

ATMEGA324PB-MU Documents

  • ATmega324PB Technical Documentation of Application Note
  • ATmega324PB Technical Documentation of Application Note
  • ATmega324PB Technical Documentation of Application Note
  • ATmega324PB Technical Documentation of Application Note

ATMEGA324PB-MU Related Products

Ratings and Reviews

  • 0 / 5
  • 5 Stars 0%
  • 4 Stars 0%
  • 3 Stars 0%
  • 2 Stars 0%
  • 1 Stars 0%
  • Ratings
  • Please rate the product!
Shipping More
Estimated Delivery Time: Jul 05 - Jul 10 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.We provide 90 days warranty.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that ATMEGA324PB-MU is the original manufacturer or agent of MICROCHIP?
We have a professional business development department to strictly test and verify the qualifications of MICROCHIP original manufacturers and agents. All MICROCHIP suppliers must pass the qualification review before they can publish their ATMEGA324PB-MU devices; we pay more attention to the channels and quality of ATMEGA324PB-MU products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of ATMEGA324PB-MU chips? Including MICROCHIP original factory information, Microcontrollers application, ATMEGA324PB-MU pictures?
You can use Jotrin's intelligent search engine, or filter by Touch MCUs Products category, or find it through Microchip Technology, Inc Information page.
Q: Are the MICROCHIP's ATMEGA324PB-MU price and stock displayed on the platform accurate?
The MICROCHIP's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for ATMEGA324PB-MU, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of ATMEGA324PB-MU?
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 ATMEGA324PBMU we delivered, we will accept the replacement or return of the ATMEGA324PB-MU 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 ATMEGA324PB-MU.
(3)The ATMEGA324PB-MU 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
More details about return electronic components please see our Return & Change Policy.
Q: How to contact us and get support, such as ATMEGA324PB-MU datasheet pdf, ATmega324PB pin diagram?
Need any After-Sales service, please feel free contact us:

Microchip Technology, Inc

Microchip Technology Inc. is a leading manufacturer of microcontroller and analog products, providing low-risk product development, lower total system cost, and faster time to market for thousands of diverse customer applications worldwide. Microchip offers outstanding technical support along with d...
  • AT24MAC402-STUM-T
    AT24MAC402-STUM-T EEPROM, 2 Kbit, 256 x 8bit, Serial I2C (2-Wire), 1 MHz, SOT-23, 5 Pins...
  • AT91SAM9XE512B-QU
    AT91SAM9XE512B-QU MCU 32-bit ARM926EJ-S RISC 512KB Flash 1.8V/2.5V/3.3V 208-Pin PQFP Tra...
    ATMEGA168PB-AUR 8 Bit MCU, AVR ATmega Family ATmega16X Series Microcontrollers, 20 MHz...
    ATMEGA168PB-MU 8 Bit MCU, Low Power High Performance, AVR ATmega Family ATmega16X Ser...
  • AT24MAC402-MAHM-T
    AT24MAC402-MAHM-T EEPROM Serial-I2C 2K-bit 256 x 8 1.8V/2.5V/3.3V/5V 8-Pin UDFN EP T/R
  • ATM90E36A-AU-Y
    ATM90E36A-AU-Y IC, Poly Phase Multifunction Energy Metering, 2.8V to 3.6V, TQFP-48

Certificates & Honor

Certificates & Honor