Microchip ATMEGA644-20AU
Advanced 8-bit AVR RISC Technology





Brands: Microchip
Mfr.Part #: ATMEGA644-20AU
Datasheet: ATMEGA644-20AU Datasheet (PDF)
Package/Case: TQFP-44
Product Type: Microcontrollers
RoHS Status:
Stock Condition: 1,097 pcs, New Original
Warranty: 1 Year Ovaga Warranty - Find Out More
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ATMEGA644-20AU General Description
Debugging and programming are made simple with the JTAG interface of the ATMEGA644-20AU, allowing for efficient development and testing of your projects. Additionally, its support for low-power modes makes it a cost-effective solution for energy-efficient operation, particularly in battery-powered devices where power consumption is a concern

Features
- Pulse width modulation control
- SPI and I2C serial interfaces
- Built-in watchdog timer
Application
- Smart home devices
- Digital control systems
- Telecommunications
Specifications
Parameter | Value | Parameter | Value |
---|---|---|---|
Core | AVR | Program Memory Size | 64 kB |
Data RAM Size | 4 kB | Maximum Clock Frequency | 20 MHz |
ADC Resolution | 10 bit | Number of GPIO | 32 I/O |
Supply Voltage - Min | 2.7 V | Max Supply Voltage | 5.5 V |
Mounting Style | SMD/SMT | Data Bus Width | 8 bit |
Minimum Operating Temperature (°C) | - 40 | Maximum Operating Temperature (°C) | + 85 |
Series | ATmega644 | Analog Supply Voltage | 1.8 V to 5.5 V |
Data RAM Type | SRAM | Data ROM Size | 2 kB |
Data ROM Type | EEPROM | Height | 1 mm |
I/O Voltage | 1.8 V to 5.5 V | Interface Type | I2C, SPI, USART |
Length | 10 mm | Moisture Sensitive | Yes |
Number of ADC Channels | 8 Channel | Number of Timers/Counters | 3 Timer |
Processor Series | megaAVR | Product | MCUs |
Program Memory Type | Flash | Factory Pack Quantity | 160 |
Tradename | AVR | Watchdog | Watchdog Timer |
Width | 10 mm |
Shipping
Shipping Type | Ship Fee | Lead Time | |
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DHL | $20.00-$40.00 (0.50 KG) | 2-5 days |
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Fedex | $20.00-$40.00 (0.50 KG) | 2-5 days |
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UPS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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TNT | $20.00-$40.00 (0.50 KG) | 2-5 days |
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EMS | $20.00-$40.00 (0.50 KG) | 2-5 days |
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REGISTERED AIR MAIL | $20.00-$40.00 (0.50 KG) | 2-5 days |
Processing Time:Shipping fee depend on different zone and country.
Payment
Terms of payment | Hand Fee | |
---|---|---|
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Wire Transfer | charge US$30.00 banking fee. |
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Paypal | charge 4.5% service fee. |
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Credit Card | charge 3.5% service fee. |
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Western Union | charge US.00 banking fee. |
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Money Gram | charge US$0.00 banking fee. |
Guarantees
1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.
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.
Packing
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Step1 :Product Inventory
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Step2 :Pressure Relief Packaging
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Step3 :Anti Static Packaging
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Step4 :Protective Packaging
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Step5 :Sealed Packaging
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Step6 :Preparation for shipment
We will inspect and count all goods before shipping to ensure that all products are intact and in accurate quantity, and will fully package them to ensure that they will not be damaged during transportation.
Q: How can I order the ATMEGA644-20AU?
A: To place an order for the ATMEGA644-20AU, select the "Add to Cart" button associated with the product listing on our website. Once selected, you can finalize your purchase by proceeding to the checkout page, where you can enter your payment and shipping information.
Q: What is the warranty period for the ATMEGA644-20AU?
A: We offer a 1-year warranty on the ATMEGA644-20AU. This warranty covers any defects in materials and artistry under normal use. During the warranty period, if the product is found to be defective, it will be repaired or replaced at no charge. For further details, please refer to our warranty policy.
Q: How does Ovaga ensure the authenticity of ATMEGA644-20AU from Microchip?
A: Ovaga has a dedicated business development team that rigorously tests and verifies the credentials of original Microchip manufacturers and authorized agents. All Microchip suppliers must pass a qualification review before they can list their ATMEGA644-20AU products on our platform. We emphasize sourcing from reliable channels and maintaining high product quality standards, ensuring you can make your purchase with confidence.
Q: How can I find detailed information about the ATMEGA644-20AU chips, such as application notes, factory information, and images?
A: You can utilize Ovaga's intelligent search engine, filter by the Ethernet PHY Products category, or visit the Microchip information page to find comprehensive details about the ATMEGA644-20AU.
Q: Are the price and stock information for ATMEGA644-20AU on Ovaga's platform accurate?
A: Inventory levels for Microchip products can fluctuate and may not be updated in real time. The information is refreshed periodically within 24 hours. To confirm stock availability and final pricing, you must confirm your order with an Ovaga salesperson or customer service representative before proceeding with payment.
Q: Can I place orders offline with Ovaga?
A: Yes, offline orders are accepted. You can navigate to the "My Orders" section and enter transaction management to place your order. Reviewing the "Order Details" and proceeding to place the order is straightforward. Additionally, you may benefit from coupons or selected gifts when ordering online.
Q: What payment methods are accepted by Ovaga?
A: Ovaga accepts various payment methods, including Wire Transfer, PayPal, Credit Cards, Western Union, and Money Gram.
Q: How is shipping arranged, and how can I track my package?
A: Customers can choose from industry-leading freight companies such as DHL, FedEx, UPS, TNT, EMS, and Registered Air Mail. Once your order is processed for shipment, you will receive an email with the shipping status and tracking number. Note that tracking information may take up to 24 hours to be displayed by carriers. Typically, express delivery takes 2-5 days.
Q: What is the return or replacement process for ATMEGA644-20AU?
A: Ovaga conducts Pre-Shipment Inspections (PSI) on all orders to ensure quality before shipment. Suppose there are issues such as quantity discrepancies, incorrect items, or visible defects (e.g., breakage or rust), and they are acknowledged by us. In that case, returns or replacements will be accepted under the following conditions:
- ●The defect must be reported within 365 days after delivery.
- ●The product must be unused and in its original, unopened packaging.
- ●Requesting Return Authorizations must be obtained.
For the return process:
- ●Please inform us within 365 days of receiving the product.
- ●Obtain Return Authorization from our team.
- ●Please refer to our After-Sale Matters for more detailed instructions.
Q: How can I contact Ovaga for support, including obtaining datasheets or pin diagrams for the ATMEGA644-20AU?
A: For any after-sales support or technical inquiries, including requests for datasheets or pin diagrams, please get in touch with us via email at [email protected].
Q: What can you tell me about Ovaga's quality assurance practices?
A: Ovaga is committed to maintaining the highest standards of quality. We are certified under ISO14001, ISO 9001, IATF16949, ISO13485, and DUNS standards by the Quality Systems Registrar. This certification signifies that our operational systems meet stringent international standards in quality management. Our compliance is regularly reviewed and tested to ensure ongoing adherence to these standards, affirming our commitment to quality and continuous improvement.
Q: What do the ISO, IATF, and DUNS certifications mean for customers of Ovaga?
A: Our ISO, IATF, and DUNS certifications assure customers that Ovaga operates systems that are both accurate and comprehensive, meeting the rigorous requirements of the ISO, IATF, and DUNS standards. This certification underscores our long-term commitment to continuous improvement across our operations. As a note to our customers, while we strive for accuracy in product data on our website, we recommend referring to the manufacturer's datasheet or catalog for confirmed product specifications before placing an order. If you identify any discrepancies, please get in touch with us immediately.
Part points
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The ATMEGA644-20AU is a microcontroller from Microchip Technology. It boasts an 8-bit architecture with 64KB flash memory, 4KB SRAM, and 2KB EEPROM. Key features include external interrupt capabilities, memory-efficient design, real-time clock functions, digital signal processing, high-speed serial interfaces, low-power consumption, and various communication protocols. The ATMEGA644-20AU finds applications in a wide range of embedded systems, including automotive electronics, consumer electronics, industrial automation, medical devices, robotics, sensor networks, home automation, and security systems.
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Equivalent
The equivalent products of ATMEGA644-20AU by Microchip Technology are other AVR microcontrollers with similar features, such as ATMEGA328P or ATMEGA2560. -
Features
The ATMEGA644-20AU microcontroller features a high-performance 8-bit architecture with 64KB flash memory, 4KB SRAM, and 2KB EEPROM for storage. Key highlights include:
External interrupt capabilities for handling events.
Memory-efficient design to optimize system resources.
Real-time clock (RTC) features for accurate timing.
Digital signal processor (DSP) for efficient processing tasks.
High-speed serial interfaces (SPI and I2C) for communication.
Low-power consumption, allowing longer battery life.
Pulse width modulation (PWM) control for precise analog output.
Built-in watchdog timer to ensure system integrity. These features make the ATMEGA644-20AU suitable for a wide range of applications, from embedded systems to robotics and industrial automation. -
Pinout
The ATMEGA644-20AU is a microcontroller with a pin count of 44. It is commonly used in embedded systems and offers features such as analog-to-digital conversion, PWM channels, SPI, UART, and more. It operates at a speed of 20MHz and can handle various tasks in electronic projects. -
Manufacturer
Microchip Technology is the manufacturer of the ATMEGA644-20AU. Microchip is a leading semiconductor company, known for producing integrated circuits, microcontrollers like the ATmega series, and various other components for embedded systems and IoT applications. -
Application Field
The ATMEGA644-20AU finds applications in various fields, including embedded systems, automotive electronics, consumer electronics, industrial automation, medical devices, robotics, sensor networks, home automation, and security systems. Its versatility allows it to cater to diverse project requirements. -
Package
The ATMEGA644-20AU microcontroller has a TQFP-44 package type, indicating a small, quad flat pack form factor.
Assembly Advice
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