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Home > Products > Integrated Circuits (ICs) > Embedded - Microcontrollers > ATMEGA329A-MUR
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ATMEGA329A-MUR

Manufacturer Part Number:
ATMEGA329A-MUR
Manufacturer / Brand
AT
Part of Description:
IC MCU 8BIT 32KB FLASH 64QFN
Datasheets:
Lead Free Status / RoHS Status:
Lead free / RoHS Compliant
Stock Condition:
New original, 10059 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number ATMEGA329A-MUR
Manufacturer / Brand AT
Stock Quantity 10059 pcs Stock
Category Integrated Circuits (ICs) > Embedded - Microcontrollers
Description IC MCU 8BIT 32KB FLASH 64QFN
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
RFQ ATMEGA329A-MUR Datasheets ATMEGA329A-MUR Details PDF
ATMEGA329A-MUR Details PDF for KR.pdf
ATMEGA329A-MUR Details PDF for IT.pdf
ATMEGA329A-MUR Details PDF for ES.pdf
ATMEGA329A-MUR Details PDF for DE.pdf
ATMEGA329A-MUR Details PDF for FR.pdf
Voltage - Supply (Vcc/Vdd) 1.8 V ~ 5.5 V
Supplier Device Package 64-QFN (9x9)
Standard Package 1
Speed 20MHz
Series AVR® ATmega
RAM Size 2K x 8
Program Memory Type FLASH
Program Memory Size 32KB (16K x 16)
Peripherals Brown-out Detect/Reset, LCD, POR, PWM, WDT
Part Status Discontinued at Digi-Key
Packaging Original-Reel®
Package / Case 64-VFQFN Exposed Pad
Other Names ATMEGA329A-MURDKR
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 54
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Lead Free Status / RoHS Status Lead free / RoHS Compliant
EEPROM Size 1K x 8
Detailed Description AVR AVR® ATmega Microcontroller IC 8-Bit 20MHz 32KB (16K x 16) FLASH 64-QFN (9x9)
Data Converters A/D 8x10b
Core Size 8-Bit
Core Processor AVR
Connectivity SPI, UART/USART, USI
Base Part Number ATMEGA329

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

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Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



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ATMEGA329A-MUR Product Details:

The ATMEGA329A-MUR is a high-performance, low-power 8-bit microcontroller from Microchip Technology's AVR ATmega series. Designed for embedded applications, this microcontroller offers a range of advanced features and functionalities.

The ATMEGA329A-MUR is a 64-QFN (9x9) packaged microcontroller with a 20MHz clock rate and a 32KB (16K x 16) FLASH program memory. It operates within a wide voltage range of 1.8V to 5.5V, making it suitable for a variety of applications. The microcontroller is RoHS-compliant and has a moisture sensitivity level (MSL) of 1, indicating that it can be stored indefinitely without any special precautions.

One of the key features of the ATMEGA329A-MUR is its enhanced peripheral set, which includes an 8-channel 10-bit A/D converter, SPI, UART/USART, and USI interfaces. These peripheral interfaces allow the microcontroller to be easily integrated into a wide range of embedded systems, from industrial automation to consumer electronics.

The ATMEGA329A-MUR is designed to address the challenges of low-power and energy-efficient operation, with features such as brown-out detection, power-on reset, and a watchdog timer. These features help to ensure reliable operation in demanding environments and minimize the risk of system failures.

The microcontroller's primary advantages include its high-performance, low-power operation, and extensive peripheral support. It is well-suited for applications such as industrial control, home automation, and IoT (Internet of Things) devices, where the combination of processing power, energy efficiency, and peripheral integration is crucial.

In terms of compatibility, the ATMEGA329A-MUR is part of the broader AVR ATmega series, which includes a range of microcontrollers with varying feature sets and performance characteristics. Some equivalent or alternative models within the same series include the ATMEGA328P, ATMEGA2560, and ATMEGA1284P, which offer similar core capabilities but may differ in terms of memory size, peripheral availability, and specific feature sets.

ATMEGA329A-MUR Key Technical Attributes

Manufacturer Part Number: ATMEGA329A-MUR

Manufacturer: Micrel / Microchip Technology

Core Size: 8-Bit

ATMEGA329A-MUR Packing Size

Type: Digi-Reel

Material: 64-VFQFN Exposed Pad

Size: 64-QFN (9x9)

Thermal Characteristics: Operating Temperature -40°C ~ 85°C

Electrical Properties: Voltage - Supply 1.8 V ~ 5.5 V

ATMEGA329A-MUR Application

Designed for use in Embedded Systems as Microcontroller

ATMEGA329A-MUR Features

The ATMEGA329A-MUR is an 8-bit high-performance microcontroller of the AVR ATmega series from Micrel / Microchip Technology. It utilizes enhanced RISC architecture with 131 powerful instructions, achieving throughputs approaching 1 MIPS per MHz. Featuring 32KB of programmable FLASH memory, clock speeds up to 20MHz, and includes peripherals like SPI, UART/USART, and a USI interface. Also, it incorporates advanced interface capabilities with A/D converters supporting 8x10b resolution. Safety and management features include Brown-out Detect/Reset, LCD, Power-on Reset, PWM, and Watchdog Timer to enhance operational reliability.

ATMEGA329A-MUR Quality and Safety Features

Brown-out Detect/Reset

Power-on Reset (POR)

Watchdog Timer (WDT)

Moisture Sensitivity Level (MSL): 1 (Unlimited)

Lead-free / RoHS Compliant

ATMEGA329A-MUR Compatibility

Supports interfaces such as SPI, UART/USART, and USI

ATMEGA329A-MUR Datasheet PDF

Access the most authoritative and up-to-date datasheet for ATMEGA329A-MUR on our website. For detailed specs and application notes, download it directly from the current page.

Quality Distributor

IC-Components is a premium distributor for Micrel / Microchip Technology products. We assure genuine parts and exceptional service. For the best purchasing experience and quick quotations, visit our website and inquire about ATMEGA329A-MUR today.

Frequently Asked Questions

What are the practical implications of the ATMEGA329A-MUR's 1.8V to 5.5V supply voltage range for designs requiring mixed-voltage interfacing or operating in environments with fluctuating power?
The ATMEGA329A-MUR's wide operating voltage range of 1.8V to 5.5V offers significant flexibility. For mixed-voltage interfacing, engineers can directly connect the ATMEGA329A-MUR to peripherals operating at 3.3V or 5V without external level shifters in many cases, simplifying board design and reducing component count. However, when interfacing with lower voltage signals (e.g., 1.8V logic), ensure the external component's I/O voltage tolerance is compatible with the ATMEGA329A-MUR's output levels. In environments with fluctuating power, the robust voltage range allows the ATMEGA329A-MUR to maintain stable operation over a broader input power variation compared to parts with narrower operating windows, enhancing system reliability.
When considering the ATMEGA329A-MUR for a replacement of an older AVR microcontroller like the ATmega329, what specific design modifications might be necessary due to differences in pinout, peripheral availability, or memory architecture?
Replacing an older AVR, such as an ATmega329, with the ATMEGA329A-MUR requires careful consideration of the 64-QFN (9x9) package versus potentially older packages. While the core functionality is similar, pin assignments for certain peripherals or control signals might differ, necessitating PCB layout adjustments. The ATMEGA329A-MUR's specific peripheral set, including its A/D converter resolution (8x10b), should be verified against the original design's requirements. Any code migration should account for potential differences in register mapping or feature availability.
For industrial control applications demanding high reliability, how does the ATMEGA329A-MUR's -40°C to 85°C operating temperature range, coupled with its MSL 1 rating, influence board design and component selection to mitigate risks of premature failure?
The ATMEGA329A-MUR's industrial temperature range of -40°C to 85°C makes it suitable for harsh environments. The MSL 1 rating indicates that it is not sensitive to moisture and can be handled without special precautions concerning ambient humidity during assembly. To maximize reliability in these conditions, designers should select other passive and active components with equivalent or superior temperature ratings. Proper thermal management for the entire PCB is crucial, ensuring that the ATMEGA329A-MUR and surrounding components do not exceed their rated maximum temperatures during peak operation. Adequate airflow, heatsinking if necessary, and careful component placement are key to preventing thermal runaway or degradation.
Given the ATMEGA329A-MUR's 20MHz clock rate and its 32KB FLASH program memory, what are the realistic performance limitations for computationally intensive tasks or real-time operating systems compared to higher-frequency microcontrollers?
The ATMEGA329A-MUR's 20MHz clock rate provides ample processing power for many embedded control tasks, especially those involving its integrated LCD controller and 8-bit architecture. However, for highly complex algorithms, extensive signal processing, or real-time operating systems requiring very fast task switching and high throughput, its performance might be a bottleneck. Engineers should perform thorough profiling of critical code sections. If the ATMEGA329A-MUR proves insufficient, consider migrating to AVR microcontrollers with higher clock speeds or more powerful cores, or explore multi-core solutions, accepting potential increases in power consumption and complexity.
What are the potential pitfalls or design considerations when migrating from a microcontroller with a different integrated LCD driver to the ATMEGA329A-MUR, specifically regarding driving multiplexed LCD panels or managing display refresh rates?
The ATMEGA329A-MUR features an integrated LCD controller, which can simplify design. However, when migrating from a device with a different LCD driver, engineers must carefully analyze the ATMEGA329A-MUR's specific capabilities regarding multiplexing ratios (e.g., common-to-segment drive), backplane driving methods, and available voltage biases for the LCD. The 20MHz clock and internal oscillator might also impose constraints on achieving the optimal refresh rates for certain LCD panels without introducing flicker or ghosting. It's critical to consult the ATMEGA329A-MUR datasheet for detailed configuration registers and to prototype extensively to ensure compatibility and optimal display performance.
In scenarios where a board design already utilizes a different 64-pin microcontroller with SPI and UART peripherals, how would one evaluate the ATMEGA329A-MUR as a potential drop-in replacement, considering subtle differences in peripheral behavior or pin multiplexing?
Evaluating the ATMEGA329A-MUR as a replacement for another 64-pin MCU with SPI and UART requires a detailed pin-mapping comparison. While the peripheral names might be the same, their specific register configurations, interrupt vectors, and associated pin multiplexing options can vary significantly. For instance, the ATMEGA329A-MUR's USI (Universal Serial Interface) can be configured for SPI-like communication but might have different performance characteristics or modes compared to a dedicated hardware SPI module on another MCU. Thoroughly review the ATMEGA329A-MUR datasheet for pin-sharing functions, peripheral enable mechanisms, and voltage tolerance on shared pins to determine true drop-in compatibility or the extent of required PCB and software modifications.
For battery-powered devices where ultra-low power consumption during standby is paramount, what are the key considerations and potential trade-offs when selecting the ATMEGA329A-MUR over microcontrollers specifically marketed for extreme low-power applications?
The ATMEGA329A-MUR offers various low-power modes, which are essential for battery-powered applications. However, its power consumption in sleep modes should be rigorously measured and compared against datasheets of specialized ultra-low-power MCUs. Key considerations include the current draw of the internal oscillator, wake-up times from different sleep modes, and the power consumption of active peripherals like the LCD controller. While the ATMEGA329A-MUR provides a good balance, if absolute minimum standby current is the primary driver and active peripheral usage is infrequent, a microcontroller architected from the ground up for ultra-low-power may offer superior performance, albeit potentially with fewer integrated features or a lower clock speed.
When integrating the ATMEGA329A-MUR into a system that requires precise timing for external sensor data acquisition, what are the potential challenges or limitations associated with its internal oscillator and the 20MHz clock rate?
The ATMEGA329A-MUR's internal oscillator, while convenient, may not offer the same long-term stability or accuracy as an external crystal oscillator, especially in applications sensitive to temperature drift or voltage variations. For precise timing of external sensor data, designers should characterize the jitter and drift of the internal oscillator. If the required accuracy is not met, consider using an external crystal oscillator. The 20MHz clock rate sets an upper bound on the data acquisition rate that can be managed directly by the CPU. For very high-speed data streams, buffering or dedicated hardware interfaces might be necessary to avoid data loss.
What are the practical limitations or potential integration challenges when using the ATMEGA329A-MUR's 8x10-bit Analog-to-Digital Converters (ADC) in applications requiring higher resolution or faster conversion speeds than what is provided?
The ATMEGA329A-MUR's 8 channels of 10-bit ADC offer a decent balance for many sensing applications. However, if an application demands higher resolution (e.g., 12-bit or more) for fine analog signal measurement or faster conversion speeds than what the 20MHz clock and ADC architecture allow, external high-resolution ADCs will be necessary. Integration would involve selecting an external ADC with appropriate communication interfaces (like SPI, which the ATMEGA329A-MUR supports) and ensuring that the system's overall data throughput can handle the increased data rate from the external ADC. Careful consideration of analog signal conditioning before the ADC input is also vital.
For designs requiring the ATMEGA329A-MUR to control multiple independent PWM outputs simultaneously, what are the factors to consider regarding the number of available timers and their capabilities to ensure predictable and synchronized pulse generation?
The ATMEGA329A-MUR includes AVR timers that can be configured for Pulse Width Modulation (PWM) generation. The number of independent PWM channels available depends on the specific timer configuration and the number of timers present in the ATMEGA329A-MUR. Engineers must consult the datasheet to understand the timer architecture (e.g., 8-bit, 16-bit timers, timer modes) and the maximum number of output compare units (OCU) available. If the required number of PWM channels exceeds what the ATMEGA329A-MUR can provide, or if more complex synchronized PWM patterns are needed, alternative MCUs with more advanced timer modules or dedicated PWM controllers might be necessary.

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