Microchip ATmega64L8AQ Datasheet: Features, Applications, and Reference Designs
64KB 32K x 16 FLASH AVR 8-Bit Microcontroller AVR® ATmega Series ATMEGA64 64 Pin 8MHz 64-TQFP









64KB 32K x 16 FLASH AVR 8-Bit Microcontroller AVR® ATmega Series ATMEGA64 64 Pin 8MHz 64-TQFP
The Microchip ATmega64L8AQ is a low-power, high-performance 8-bit microcontroller based on the AVR enhanced RISC architecture, offering a rich instruction set and 32 general-purpose working registers. This technical article aims to provide an in-depth overview of the ATmega64L8AQ, highlighting its features, applications, reference designs, alternative parts, and frequently asked questions.
Product Introduction
1. Description
The ATmega64L8AQ is a powerful, low-power Atmel AVR® 8-bit microcontroller designed for a wide range of embedded applications. It features 64 Kbytes of in-system reprogrammable Flash program memory, 2 Kbytes of EEPROM, and 4 Kbytes of internal SRAM. The device offers high-endurance non-volatile memory segments, a 2-cycle multiplier, and optional boot code section with independent lock bits, making it suitable for diverse embedded systems.
2. Features
Key features of the ATmega64L8AQ include:
- Advanced RISC Architecture with 130 powerful instructions
- Fully static operation and up to 16 MIPS throughput at 16 MHz
- High endurance non-volatile memory segments for program memory and EEPROM
- Peripheral features including timers/counters, PWM channels, ADC, serial interfaces, and watchdog timer
- Special microcontroller features such as power-on reset, sleep modes, selectable clock frequency, and global pull-up disable
- 53 programmable I/O lines and 64-lead TQFP and 64-pad QFN/MLF packages
- Operating voltages ranging from 2.7V to 5.5V (ATmega64L) and 4.5V to 5.5V (ATmega64)
- 0 - 8 MHz speed grade for ATmega64L and 0 - 16 MHz for ATmega64
3. Applications
The ATmega64L8AQ is suitable for various applications, including:
- Consumer electronics
- Industrial automation
- Internet of Things (IoT) devices
- Embedded control systems
- Sensor interfacing applications
4. Reference Designs
The ATmega64L8AQ is utilized in diverse reference designs, such as:
- Home automation systems
- Data loggers
- Motor control applications
- Portable measurement devices
5. Alternative Parts
Some alternative parts to the ATmega64L8AQ that can be considered for similar applications are:
- ATmega103
- ATmega128L8AQ
- ATmega256L8AQ
- ATmega32L8AQ
6. FAQs
Q: What are the operating voltages for the ATmega64L8AQ?
A: The ATmega64L8AQ operates at a voltage range of 2.7V to 5.5V, making it suitable for low-power applications.
Q: What are the key features of the RISC architecture in the ATmega64L8AQ?
A: The ATmega64L8AQ features advanced RISC architecture with 130 powerful instructions, fully static operation, and high endurance non-volatile memory segments.
Q: In which types of applications is the ATmega64L8AQ commonly used?
A: The ATmega64L8AQ is commonly used in consumer electronics, industrial automation, and Internet of Things (IoT) devices where low power consumption and high performance are crucial.
Specifications
- TypeParameter
- Factory Lead Time7 Weeks
- Contact Plating
Contact plating (finish) provides corrosion protection for base metals and optimizes the mechanical and electrical properties of the contact interfaces.
Tin - Mount
In electronic components, the term "Mount" typically refers to the method or process of physically attaching or fixing a component onto a circuit board or other electronic device. This can involve soldering, adhesive bonding, or other techniques to secure the component in place. The mounting process is crucial for ensuring proper electrical connections and mechanical stability within the electronic system. Different components may have specific mounting requirements based on their size, shape, and function, and manufacturers provide guidelines for proper mounting procedures to ensure optimal performance and reliability of the electronic device.
Surface Mount - Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
64-TQFP - Number of Pins64
- Data ConvertersA/D 8x10b
- Number of I/Os53
- ROM(word)32768
- Watchdog TimersYes
- Operating Temperature
The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.
-40°C~105°C TA - Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tray - Series
In electronic components, the "Series" refers to a group of products that share similar characteristics, designs, or functionalities, often produced by the same manufacturer. These components within a series typically have common specifications but may vary in terms of voltage, power, or packaging to meet different application needs. The series name helps identify and differentiate between various product lines within a manufacturer's catalog.
AVR® ATmega - Published1997
- Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - Number of Terminations64
- Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
QUAD - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Terminal Pitch
The center distance from one pole to the next.
0.8mm - Frequency
In electronic components, the parameter "Frequency" refers to the rate at which a signal oscillates or cycles within a given period of time. It is typically measured in Hertz (Hz) and represents how many times a signal completes a full cycle in one second. Frequency is a crucial aspect in electronic components as it determines the behavior and performance of various devices such as oscillators, filters, and communication systems. Understanding the frequency characteristics of components is essential for designing and analyzing electronic circuits to ensure proper functionality and compatibility with other components in a system.
8MHz - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
ATMEGA64 - Qualification Status
An indicator of formal certification of qualifications.
Not Qualified - Power Supplies
an electronic circuit that converts the voltage of an alternating current (AC) into a direct current (DC) voltage.?
3/5V - Interface
In electronic components, the term "Interface" refers to the point at which two different systems, devices, or components connect and interact with each other. It can involve physical connections such as ports, connectors, or cables, as well as communication protocols and standards that facilitate the exchange of data or signals between the connected entities. The interface serves as a bridge that enables seamless communication and interoperability between different parts of a system or between different systems altogether. Designing a reliable and efficient interface is crucial in ensuring proper functionality and performance of electronic components and systems.
2-Wire, I2C, SPI, UART, USART - Memory Size
The memory capacity is the amount of data a device can store at any given time in its memory.
64kB - Oscillator Type
Wien Bridge Oscillator; RC Phase Shift Oscillator; Hartley Oscillator; Voltage Controlled Oscillator; Colpitts Oscillator; Clapp Oscillators; Crystal Oscillators; Armstrong Oscillator.
Internal - RAM Size
RAM size refers to the amount of random access memory (RAM) available in an electronic component, such as a computer or smartphone. RAM is a type of volatile memory that stores data and instructions that are actively being used by the device's processor. The RAM size is typically measured in gigabytes (GB) and determines how much data the device can store and access quickly for processing. A larger RAM size allows for smoother multitasking, faster loading times, and better overall performance of the electronic component. It is an important factor to consider when choosing a device, especially for tasks that require a lot of memory, such as gaming, video editing, or running multiple applications simultaneously.
4K x 8 - Voltage - Supply (Vcc/Vdd)
Voltage - Supply (Vcc/Vdd) is a key parameter in electronic components that specifies the voltage level required for the proper operation of the device. It represents the power supply voltage that needs to be provided to the component for it to function correctly. This parameter is crucial as supplying the component with the correct voltage ensures that it operates within its specified limits and performance characteristics. It is typically expressed in volts (V) and is an essential consideration when designing and using electronic circuits to prevent damage and ensure reliable operation.
2.7V~5.5V - uPs/uCs/Peripheral ICs Type
The parameter "uPs/uCs/Peripheral ICs Type" refers to the classification of various integrated circuits used in electronic devices. It encompasses microprocessors (uPs), microcontrollers (uCs), and peripheral integrated circuits that provide additional functionalities. This classification helps in identifying the specific type of chip used for processing tasks, controlling hardware, or interfacing with other components in a system. Understanding this parameter is essential for selecting the appropriate electronic components for a given application.
MICROCONTROLLER, RISC - Core Processor
The term "Core Processor" typically refers to the central processing unit (CPU) of a computer or electronic device. It is the primary component responsible for executing instructions, performing calculations, and managing data within the system. The core processor is often considered the brain of the device, as it controls the overall operation and functionality. It is crucial for determining the speed and performance capabilities of the device, as well as its ability to handle various tasks and applications efficiently. In modern devices, core processors can have multiple cores, allowing for parallel processing and improved multitasking capabilities.
AVR - Peripherals
In the context of electronic components, "Peripherals" refer to devices or components that are connected to a main system or device to enhance its functionality or provide additional features. These peripherals can include input devices such as keyboards, mice, and touchscreens, as well as output devices like monitors, printers, and speakers. Other examples of peripherals include external storage devices, network adapters, and cameras. Essentially, peripherals are external devices that expand the capabilities of a main electronic system or device.
Brown-out Detect/Reset, POR, PWM, WDT - Program Memory Type
Program memory typically refers to flash memory when it is used to hold the program (instructions). Program memory may also refer to a hard drive or solid state drive (SSD). Contrast with data memory.
FLASH - Core Size
Core size in electronic components refers to the physical dimensions of the core material used in devices such as inductors and transformers. The core size directly impacts the performance characteristics of the component, including its inductance, saturation current, and frequency response. A larger core size typically allows for higher power handling capabilities and lower core losses, while a smaller core size may result in a more compact design but with limitations on power handling and efficiency. Designers must carefully select the core size based on the specific requirements of the application to achieve optimal performance and efficiency.
8-Bit - Program Memory Size
Program Memory Size refers to the amount of memory available in an electronic component, such as a microcontroller or microprocessor, that is used to store program instructions. This memory is non-volatile, meaning that the data stored in it is retained even when the power is turned off. The program memory size determines the maximum amount of code that can be stored and executed by the electronic component. It is an important parameter to consider when selecting a component for a specific application, as insufficient program memory size may limit the functionality or performance of the device.
64KB 32K x 16 - Connectivity
In electronic components, "Connectivity" refers to the ability of a component to establish and maintain connections with other components or devices within a circuit. It is a crucial parameter that determines how easily signals can be transmitted between different parts of a circuit. Connectivity can be influenced by factors such as the number of input and output ports, the type of connectors used, and the overall design of the component. Components with good connectivity are essential for ensuring reliable and efficient operation of electronic systems.
I2C, SPI, UART/USART - Bit Size
In electronic components, "Bit Size" refers to the number of bits that can be processed or stored by a particular component. A bit is the smallest unit of data in computing and can have a value of either 0 or 1. The Bit Size parameter is commonly used to describe the capacity or performance of components such as microprocessors, memory modules, and data buses. A larger Bit Size generally indicates a higher processing capability or storage capacity, allowing for more complex operations and larger amounts of data to be handled efficiently. It is an important specification to consider when selecting electronic components for specific applications that require certain levels of performance and data processing capabilities.
8 - Access Time
Access time in electronic components refers to the amount of time it takes for a system to retrieve data from memory or storage once a request has been made. It is typically measured in nanoseconds or microseconds and indicates the speed at which data can be accessed. Lower access time values signify faster performance, allowing for more efficient processing in computing systems. Access time is a critical parameter in determining the overall responsiveness of electronic devices, particularly in applications requiring quick data retrieval.
8 μs - Data Bus Width
The data bus width in electronic components refers to the number of bits that can be transferred simultaneously between the processor and memory. It determines the amount of data that can be processed and transferred in a single operation. A wider data bus allows for faster data transfer speeds and improved overall performance of the electronic device. Common data bus widths include 8-bit, 16-bit, 32-bit, and 64-bit, with higher numbers indicating a larger capacity for data transfer. The data bus width is an important specification to consider when evaluating the speed and efficiency of a computer system or other electronic device.
8b - Number of Timers/Counters4
- EEPROM Size
EEPROM Size refers to the amount of memory capacity available in an Electrically Erasable Programmable Read-Only Memory (EEPROM) chip. This parameter indicates the total storage space in bytes or bits that can be used to store data in a non-volatile manner. The EEPROM size determines the maximum amount of information that can be written, read, and erased from the memory chip. It is an important specification to consider when selecting an EEPROM for a particular application, as it directly impacts the amount of data that can be stored and accessed by the electronic component.
2K x 8 - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant - Lead Free
Lead Free is a term used to describe electronic components that do not contain lead as part of their composition. Lead is a toxic material that can have harmful effects on human health and the environment, so the electronics industry has been moving towards lead-free components to reduce these risks. Lead-free components are typically made using alternative materials such as silver, copper, and tin. Manufacturers must comply with regulations such as the Restriction of Hazardous Substances (RoHS) directive to ensure that their products are lead-free and environmentally friendly.
Lead Free
Parts with Similar Specs
- ImagePart NumberManufacturerPackage / CaseNumber of PinsData Bus WidthNumber of I/OInterfaceMemory SizePeripheralsMoisture Sensitivity Level (MSL)View Compare
ATMEGA64L-8AQ
64-TQFP
64
8 b
53
2-Wire, I2C, SPI, UART, USART
64 kB
Brown-out Detect/Reset, POR, PWM, WDT
3 (168 Hours)
64-TQFP
64
8 b
53
2-Wire, I2C, SPI, USART
128 kB
Brown-out Detect/Reset, POR, PWM, WDT
3 (168 Hours)
64-TQFP
64
8 b
54
SPI, UART, USART
16 kB
Brown-out Detect/Reset, LCD, POR, PWM, WDT
3 (168 Hours)
64-TQFP
64
8 b
54
SPI, UART, USART
16 kB
Brown-out Detect/Reset, POR, PWM, WDT
3 (168 Hours)
Datasheet PDF
- Datasheets :
- PCN Assembly/Origin :
- PCN Packaging :
- PCN Design/Specification :
- ConflictMineralStatement :
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