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ATMEGA645A-MUR

ATMEGA645A-MUR - 8-bit AVR MCU 64KB Flash 64-QFN | Microchip

The Microchip Technology ATMEGA645A-MUR is an 8-bit AVR RISC microcontroller with 64 KB in-system programmable Flash, 2 KB EEPROM, 4 KB SRAM, and up to 20 MHz maximum clock operation, housed in a 64-pad QFN (9x9 mm) surface-mount package. An 8-bit AVR microcontroller is a self-contained computing IC that integrates a RISC processor core, program memory, data memory, peripherals, and general-purpose I/O on a single die. Within the power-management and embedded-systems hierarchy, MCUs like the ATmega645A sit at the application-control layer, executing user firmware that reads sensors, drives actuators, and manages communication in appliances, instruments, and industrial equipment. Key features of the ATMEGA645A-MUR include the AVR enhanced RISC architecture executing most instructions in a single clock cycle, 54 general-purpose I/O lines (with the family supporting up to 54/69 I/O depending on package), 32 general-purpose working registers, in-system programmable Flash with read-while-write capability, and an industrial temperature range suitable for demanding environments. The A-suffix silicon revision offers improved performance over the original ATmega645. Technically, the device combines a Harvard-architecture 8-bit core with 64 KB (32K x 16) Flash organized for ISP programming, 2 KB of nonvolatile EEPROM for parameter storage, and 4 KB of internal SRAM for runtime data. Peripherals typically include an 8-channel 10-bit ADC, analog comparator, USART serial interface, SPI, two-wire interface, timers/counters, and a JTAG interface for debugging and boundary scan, as described on the Microchip ATmega645A product page. Typical applications include industrial control panels, HVAC and appliance controllers, battery-powered instrumentation, LED and LCD display systems, and embedded human-machine interfaces where a mid-range 8-bit MCU with generous Flash is required. When designing with this part, note that it is a 4.5 V to 5.5 V supply device; ensure the power rail stays within this window and observe the indicated clock frequency rating for your temperature and voltage operating point. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA645P-AU

ATMEGA645P-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip

The Microchip ATMEGA645P-AU is an 8-bit AVR RISC microcontroller with 64KB of in-system programmable ISP Flash memory, 2KB EEPROM, 4KB SRAM, and up to 54 general-purpose I/O lines, packaged in a 64-pin TQFP (14x14 mm) surface-mount package and rated for industrial temperature operation at up to 16 MHz over 2.5V, 3.3V, and 5V supply ranges. An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle. Within the power-management hierarchy, it combines a CPU core, program memory, data memory, and peripheral controllers (timers, UART, SPI, TWI/I2C, ADC) on a single semiconductor die, replacing multi-chip board-level solutions and reducing BOM cost and board area. Key differentiating features include the picoPower technology platform for low active and sleep-mode consumption, read-while-write Flash for self-programming and bootloader applications, 32 general-purpose working registers directly connected to the ALU, an on-chip 10-bit ADC, and In-Circuit Serial Programming ICSP via just two I/O pins plus reset, supported by tools such as the MPLAB SNAP debugger. Architecturally, the AVR RISC core achieves roughly 1 MIPS per MHz, so at the maximum 16 MHz clock the ATmega645P delivers close to 16 MIPS throughput. The picoPower process family (the P-suffix generation) supersedes the non-P ATmega645 with lower power figures while remaining a documented drop-in replacement under Microchip application note AVR534. Typical applications include industrial control panels, HVAC and building automation, battery-powered instrumentation, consumer appliances, and embedded human-machine interfaces where a 5V-tolerant, flash-based 8-bit MCU with rich I/O count is preferred. Design consideration: choose the clock source and bod (brown-out detector) settings carefully at 5V versus 3.3V operation, since the guaranteed 16 MHz maximum frequency applies to the 4.5V to 5.5V range; at 2.7V to 5.5V the safe maximum is lower per the datasheet frequency-versus-voltage curve. This page synthesizes distributor pricing, verified drop-in alternatives, application guidance, and comparison tables not found in the manufacturer datasheet, with pricing as of 2026-09-18.

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ATMEGA645P-AUR

ATMEGA645P-AUR - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip

The Microchip Technology ATMEGA645P-AUR is an 8-bit AVR ATmega microcontroller with 64KB (32K x 16) In-System Programmable Flash, 2KB EEPROM, 4KB SRAM, and a 16 MHz maximum clock speed, packaged in a 64-pin TQFP (14x14 mm) for surface-mount assembly. The picoPower-generation P variant executes powerful single-cycle instructions from its AVR enhanced RISC core, delivering throughputs approaching 1 MIPS per MHz. An 8-bit microcontroller is a complete computing system on a single chip, combining a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs. Within the Microchip (formerly Atmel) hierarchy, the ATmega family sits above the ATtiny series and below the 32-bit AVR/ARM lines, addressing mid-range embedded control tasks where rich peripherals and large flash matter. Key features include 64 general-purpose working registers directly connected to the ALU, 53 general-purpose I/O lines, in-system programmable flash supporting ICSP via debugWIRE-style programming tools, and operation across industrial temperature ranges in the TQFP-64 footprint. The P-suffix denotes the picoPower-optimized die, an upwards-compatible drop-in improvement over the ATmega645A per Atmel application note AVR534. Technically, the AVR architecture achieves code efficiency through a rich instruction set executing mostly in single clock cycles, while the 4KB SRAM accommodates stack-heavy C code and the 2KB EEPROM retains calibration data through power cycles. Supply voltage for the -AU industrial speed grade is specified at 4.5V to 5.5V at 16 MHz operation. Typical applications include industrial automation controllers, consumer appliance interfaces with segment-LCD-adjacent sibling parts, metering systems, and hobby/education platforms where the large flash permits bootloader-based field updates. When designing, decouple VCC/AVCC with 0.1uF ceramics close to the package and reserve the ICSP header (MOSI/MISO/SCK/RESET) for field programming. This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility guidance, and practical design notes not found in the manufacturer datasheet.

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ATMEGA645P-MU

ATMEGA645P-MU - 8-Bit AVR MCU 64KB 16MHz 64-QFN | Microchip

The Microchip Technology ATMEGA645P-MU is a high-performance 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 2 KB EEPROM, 4 KB SRAM, and up to 54 general-purpose I/O lines, housed in a 64-pad QFN (9x9 mm, MLF) surface-mount package and rated for 16 MHz operation. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, making it a mainstay of the broader embedded microcontroller and power-management hierarchy for cost-sensitive control applications. The ATmega family from Microchip (originally Atmel) is one of the most widely deployed 8-bit MCU platforms in industrial and consumer designs. Key features include 64 KB of self-programmable ISP Flash with read-while-write capability, a picoPower technology portfolio for low active and sleep currents, 32 general-purpose working registers, an on-chip LCD controller (segment drive) inherited from the ATmega645/6490 family, JTAG for on-chip debugging, and a rich peripheral set including 8-channel 10-bit ADC, USART, SPI, and two-wire interface (I2C). Technically, the AVR core achieves close to 1 MIPS per MHz, so at the 16 MHz maximum clock the device delivers roughly 16 MIPS throughput. Operating voltage spans 2.7 V to 5.5 V for the 16 MHz speed grade, and the picoPower P-suffix die improves sleep-mode consumption relative to the non-P ATmega645, benefiting battery-powered designs. Typical applications include industrial control panels with LCD displays, building automation and HVAC controllers, battery-operated metering, and consumer appliance user interfaces where on-chip segment LCD driving reduces BOM cost. A key design consideration: the 64-QFN package exposes a large center die pad that must be soldered to a grounded PCB thermal pad for reliable operation and mechanical integrity, and QFN rework requires skilled profiling. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with all key data verified against live distributor listings as of 2026-09-18.

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ATMEGA645P-MUR

ATMEGA645P-MUR - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA645P-MUR is a high-performance 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and a 16 MHz maximum clock frequency, housed in a 64-pin VFQFN (9x9 mm) exposed-pad package. It operates from a 4.5 V to 5.5 V supply and provides 54 general purpose I/O lines. An 8-bit AVR microcontroller is a Harvard-architecture processor that executes most instructions in a single clock cycle, sitting within the broader hierarchy of embedded processors: ATmega family -> AVR 8-bit MCU -> microcontroller unit (MCU) -> semiconductor integrated circuit. MCUs integrate CPU, memory, and peripherals such as timers, UART, SPI, and ADC on one die, replacing multi-chip solutions in cost- and space-sensitive embedded designs. Key features of the ATMEGA645P include picoPower technology for low power consumption, read-while-write Flash for self-programming bootloaders, 32 general purpose working registers, and an on-chip 10-bit ADC. The picoPower process and multiple sleep modes make it suitable for battery-aware and low-duty-cycle applications without sacrificing the industry-standard AVR instruction set and toolchain compatibility. Technically, the device is based on the enhanced AVR RISC core with single-cycle instruction execution, achieving up to 16 MIPS throughput at 16 MHz. In-system programmable (ISP) Flash with read-while-write support enables firmware updates in the field via SPI or a bootloader, while JTAG-boundary considerations and lock bits protect intellectual property. Supply operation at 4.5-5.5 V targets 5 V industrial noise-margin environments. Typical applications include industrial control and automation nodes, consumer appliances, HVAC and building control systems, and sensor-interface boards where 5 V compatibility and a large peripheral set simplify board-level design. A key design consideration: the ATmega645P-16 is a 5 V part (4.5-5.5 V); for 2.7-5.5 V operation at reduced speed, select the ATmega645V speed-grade variant instead. Ensure adequate decoupling and exposed-pad grounding on the QFN for signal integrity. This page synthesizes verified distributor pricing, drop-in family alternatives, practical design notes, and application guidance not consolidated in the manufacturer datasheet.

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ATMEGA645V-8AI

ATMEGA645V-8AI - 64KB AVR MCU, 8MHz, TQFP-64 | Microchip

The Microchip Technology ATMEGA645V-8AI is an 8-bit AVR RISC microcontroller with 64KB of In-System Programmable Flash, 4KB SRAM, 2KB EEPROM, and a maximum clock frequency of 8 MHz, packaged in a 64-pin TQFP (14 x 14 mm) for industrial temperature operation. An AVR ATmega microcontroller is an 8-bit reduced-instruction-set (RISC) MCU that executes most of its instructions in a single clock cycle, positioning it in the embedded microcontroller hierarchy above simple 4-bit controllers and below 32-bit ARM-class devices. The ATmega645V belongs to the megaAVR family and integrates program memory, data memory, peripherals, and CPU on one die, making it a complete embedded processing solution for standalone control tasks. Key features include the advanced AVR RISC architecture with 130 powerful instructions, 64KB (32K x 16 organization) ISP Flash with Read-While-Write capability, 2KB EEPROM for non-volatile parameter storage, 4KB internal SRAM, and an 8-channel 10-bit ADC. A JTAG interface provides on-chip debugging and Boundary-scan capability, while three flexible Timer/Counters support PWM and event timing. The V-grade speed/voltage class permits operation from 2.7V to 5.5V, allowing use on 3.3V or 5V rails. Architecturally, the device pairs a fast-access register file of 32 general-purpose working registers with single-cycle execution, achieving approximately 8 MIPS throughput at the 8 MHz maximum frequency. In-System Programmability permits firmware updates on the assembled board through SPI or JTAG. Typical applications include industrial control panels, sensor data loggers, metering front ends leveraging the 10-bit ADC, and legacy embedded systems requiring 5V-tolerant I/O with ample Flash for protocol stacks or user interfaces. Design consideration: the 8 MHz ceiling means timing-critical loops must be budgeted accordingly; if 16 MHz operation or a wider 4.5V-5.5V-only supply is acceptable, the ATMEGA645-16AI variant provides identical pinout at double throughput. This page synthesizes verified distributor data, drop-in same-family alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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ATMEGA645V-8AUR

ATMEGA645V-8AUR - 8-bit AVR MCU 64KB Flash 8MHz | Microchip

The Microchip Technology ATMEGA645V-8AUR is a high-performance, low-power AVR 8-bit microcontroller with 64KB of In-System Programmable Flash, 2KB EEPROM, 4KB SRAM, and a maximum clock frequency of 8 MHz, housed in a 64-pin TQFP surface-mount package rated for industrial temperature environments and supplied on Tape & Reel. An 8-bit microcontroller is an integrated circuit that combines a processor core, program memory, data memory, and peripherals on a single chip. Within the power-management hierarchy of embedded systems, an MCU sits at the lowest processing layer, executing control logic for sensors, displays, actuators, and communication interfaces. The AVR family, originally developed by Atmel and now manufactured by Microchip Technology, is built on an advanced RISC architecture executing most of its 130 instructions in a single clock cycle. Key features of the ATMEGA645V-8AUR include its 64KB self-programmable Flash for firmware storage, 64-pin TQFP footprint with gull-wing terminals suited to automated assembly, an AVR RISC core with 32 general-purpose working registers, and low-power operation across a wide supply range, with the V-grade suffix indicating extended low-voltage operation from 1.8 V. This makes the device suitable for battery-powered designs where 5 V rails are unavailable. Technically, the core achieves roughly 1 MIPS per MHz throughput, meaning an 8 MHz clock yields approximately 8 MIPS of integer performance. The ATmega645 family integrates an LCD controller along with standard AVR peripherals including timers, USART, SPI, and a 10-bit ADC, consolidating display-driving capability directly into the MCU and reducing external component count in segmented-LCD products. Typical applications include battery-operated metering devices, appliance control panels with segmented LCDs, industrial sensor nodes, and low-voltage portable instrumentation. The combination of Flash self-programming, EEPROM for calibration data, and an integrated LCD driver fits single-chip meter and panel-controller architectures particularly well. Design consideration: because the V-suffix device is specified at 8 MHz maximum, designs needing higher throughput should select the 16 MHz ATMEGA645-16AI variant, which trades low-voltage range for speed. This page synthesizes distributor pricing, verified drop-in alternatives within the ATmega645/3290 families, and practical design guidance not found in the manufacturer datasheet alone.

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ATMEGA645V-8MUR

ATMEGA645V-8MUR - 8MHz AVR 64KB Flash MCU | Microchip

The Microchip Technology ATMEGA645V-8MUR is an 8-bit AVR ATmega microcontroller with 64KB (32K x 16) in-system programmable FLASH, 2KB EEPROM, 4KB SRAM and a maximum clock frequency of 8 MHz, housed in a 64-pin QFN (9x9 mm) exposed-pad package. The V suffix denotes the 1.8V to 5.5V wide operating voltage range, and the -8 grade certifies 8 MHz operation down to 1.8V. An 8-bit AVR microcontroller executes a rich RISC instruction set - 130 powerful instructions, most single-cycle - from a Harvard-architecture core that fetches instructions and data over separate buses. Within the power-management hierarchy, it sits as an embedded MCU integrating program memory, data memory, timers, ADC and serial peripherals on a single die. Key features include in-system programmable (ISP) FLASH enabling firmware updates on the assembled PCB, four flexible timer/counters with PWM channels, an 8-channel 10-bit ADC, USART, SPI and two-wire (I2C) serial interfaces, and the JTAG interface for on-chip debug and boundary scan. Architecturally, the AVR core achieves close to 1 MIPS per MHz, so the 8 MHz ATMEGA645V delivers roughly 8 MIPS while drawing only microamp-level current in power-down sleep mode, making the low-voltage V variant well suited to battery-powered systems. Typical applications include battery-powered instrumentation, industrial sensors and control nodes, consumer appliances, and LCD-adjacent control tasks within the ATmega megaAVR family ecosystem. When designing with this device, budget the 8 MHz ceiling against your algorithm's MIPS requirements, and remember the V grade trades maximum speed for a 1.8V low-voltage floor - a 5V 16 MHz system should choose the ATmega645-16 variant instead. This page synthesizes distributor pricing, same-family drop-in alternatives, design notes, and long-tail search coverage not found in a single manufacturer datasheet.

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ATMEGA649-16AI

ATMEGA649-16AI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip

The Microchip Technology ATMEGA649-16AI is an 8-bit AVR RISC microcontroller with 64KB ISP Flash (32K x 16), 2KB EEPROM, 4KB SRAM, a 16MHz maximum CPU clock, and an integrated segment LCD controller, housed in a 64-pin TQFP (14x14 mm) package in industrial temperature grade. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle, sitting at the low end of the embedded processing hierarchy below 32-bit MCUs but above dedicated logic. Microcontrollers of this class combine CPU, program memory, data memory, and peripherals in a single chip, serving as the central control element of an embedded system. Key features include 130 powerful instructions with most executing in a single clock cycle, self-programming Flash with read-while-write capability for boot-loader applications, JTAG for on-chip debugging and boundary scan, and an on-chip LCD driver that offloads segment driving from software. The 54 general-purpose I/O lines available in the TQFP-64 package provide extensive connectivity to keypads, displays, and sensors. Technically, the device belongs to the AVR ATmega family with 32 general-purpose working registers directly connected to the ALU, enabling single-cycle execution and code efficiency up to six times faster than conventional CISC MCUs. In-System Programming (ISP) allows firmware updates on the assembled board through SPI, while In-Circuit Serial Programming and debugging are supported via tools such as the MPLAB SNAP connected through an 8-pin SIL header. Typical applications include consumer appliances with LCD user interfaces, metering products, industrial control panels, and battery-powered instruments, where the integrated LCD controller and low-power AVR core reduce board area and power consumption compared with a discrete LCD driver. Design consideration: the LCD controller multiplexes a number of segment pins with general-purpose I/O, so pin budgeting must be completed early in the schematic capture process to avoid redesign. This page synthesizes distributor pricing leads, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-09-18.

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ATMEGA649-16AU

ATMEGA649-16AU - 8-Bit AVR MCU 64KB LCD | Microchip

The Microchip Technology ATMEGA649-16AU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory (32K x 16), 2 KB EEPROM, 4 KB SRAM, an integrated LCD controller, and a maximum clock frequency of 16 MHz, housed in a 64-pin TQFP (14 x 14 mm) package. An 8-bit AVR microcontroller is a single-chip computing device built on the AVR enhanced RISC architecture, which executes most instructions in a single clock cycle. Within the system hierarchy, the ATmega649 sits in the power-management-and-control layer of an embedded system, combining a processing core, non-volatile memory, analog-to-digital conversion, serial interfaces, and an LCD driver on one die. This level of integration replaces multiple discrete components and is a classic choice for cost-sensitive, display-based embedded products. Key features include 54/69 general purpose I/O lines (package dependent), 32 general purpose working registers, a JTAG interface for boundary-scan and on-chip debugging, read-while-write Flash for in-system self-programming, and an on-chip segment LCD controller - the defining feature separating the ATmega649 from the otherwise similar ATmega64. A 10-bit ADC and multiple timers round out the peripheral set. Architecturally, the device pairs the AVR RISC core with Harvard memory organization, achieving up to 16 MIPS throughput at 16 MHz. The ISP Flash supports firmware updates in the field, while the JTAG port enables boundary-scan testing of assembled boards and hardware debugging via Microchip tools such as MPLAB SNAP, ICE3, and AVR ONE. Typical applications include industrial panel meters and metering equipment with segment LCDs, HVAC and building-control units, battery-powered instruments, and low-cost HMI front-ends where the integrated LCD driver removes the need for an external display controller. A key design consideration is that the newer ATmega649A revision supersedes this device; Microchip lists the ATMEGA649A for new designs, though the -16AU remains available from distributors. This page adds distributor pricing tiers, drop-in alternatives within the same TQFP-64 footprint, and practical design notes not found in the standard datasheet. Pricing shown as of 2026-09-18.

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ATMEGA649-16MU

ATMEGA649-16MU - 8-bit AVR MCU 64KB Flash 16MHz 64-QFN | Microchip

The Microchip Technology ATMEGA649-16MU is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 2KB EEPROM, 4KB SRAM, and an integrated LCD controller, operating at up to 16MHz in a 64-pin QFN (9x9 mm) package with exposed pad. An 8-bit AVR microcontroller is a Harvard-architecture RISC processor executing most instructions in a single clock cycle. Within the power-management hierarchy, the ATmega family sits in the general-purpose MCU tier, spanning Flash densities from 4KB to 256KB, and the ATmega649 occupies the 64KB mid-range slot with a unique on-chip segment LCD driver. Key features include 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for boundary-scan and on-chip debugging/programming, and a complete on-chip LCD controller with internal contrast control. Read-while-write Flash capability allows firmware updates during execution, while ISP (In-System Programmable) Flash simplifies field upgrades without removing the device from the PCB. Architecturally, the AVR core uses a single-cycle ALU fed by two register-file read ports, sustaining up to 16 MIPS at 16MHz. The LCD controller drives segmented glass directly with internal contrast control, eliminating an external LCD driver IC and its firmware overhead. Peripherals include flexible timers, USART, SPI, and an analog comparator with ADC per family datasheet. Typical applications include battery-powered instruments with segment LCD displays, utility metering, industrial control panels, and hand-held measurement devices where the integrated LCD controller and low-power AVR core reduce system cost and board area. A key design consideration: verify availability of the newer ATMEGA649A variant, which is designated as the newer device by the manufacturer, for new designs to maximize lifecycle headroom. This page synthesizes distributor pricing from 12 sources, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA649-16MUR

ATMEGA649-16MUR - 8-bit AVR MCU 64KB 16MHz LCD | Microchip

The Microchip Technology ATMEGA649-16MUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 4KB SRAM, 2KB EEPROM, and an integrated segment LCD driver, clocked at up to 16MHz from a 5V supply in a 64-pin QFN (9x9 mm) exposed-pad package. An 8-bit AVR microcontroller is a single-chip processor built on the AVR enhanced RISC architecture, in which most of the 130 powerful instructions execute in a single clock cycle. Within the system hierarchy, the MCU sits at the heart of embedded control: microcontroller -> embedded processor -> semiconductor IC. The ATmega649 belongs to the LCD AVR family (ATmega325/329/645/649 and the 3290/6490 variants), which pairs general-purpose MCU peripherals with an on-chip LCD controller that can drive a segmented glass display directly. Key features include 64KB of self-programming Flash with read-while-write capability, 54 general-purpose I/O lines, a JTAG interface for boundary-scan, on-chip debugging, and programming, and an LCD controller with up to 4x25 or 8x24 segment drive. The advanced RISC core with 32 general-purpose working registers is directly connected to the ALU, allowing two independent registers to be accessed in one instruction. Technically, the device executes up to 16 MIPS at 16MHz, supports in-system self-programming via the boot loader section, and offers power-saving modes including idle, ADC noise reduction, and power-down, making it suited to battery-operated metering products. Peripherals include 8-channel 10-bit ADC, two 8-bit and two 16-bit timers with PWM, USART, SPI, and two-wire interface (per the ATmega649 family datasheet). Typical applications are utility metering with LCD display, handheld instruments, industrial control panels, and consumer appliances where a segmented display and low power are required. When designing with this part, budget the Flash around the bootloader size and validate the LCD bias resistor network against the target glass. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA6490-16AI

ATMEGA6490-16AI - 64KB Flash 16MHz AVR LCD MCU | Microchip

The Microchip ATMEGA6490-16AI is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 4 KB SRAM, 2 KB EEPROM, and an integrated segment LCD driver, operating at up to 16 MHz in a 100-pin TQFP (14x14 mm) package for industrial temperature ranges (-40C to +85C). An 8-bit AVR microcontroller is a Harvard-architecture RISC processor that executes most instructions in a single clock cycle. Within the power-management hierarchy of embedded systems, it serves as the central processing element, sitting above simple logic ICs but below 32-bit application processors. The AVR ATmega family from Microchip (formerly Atmel) is widely used for cost-sensitive embedded control where integrated peripherals reduce system part count. Key features include 64 KB of self-programming Flash with read-while-write capability, 135 powerful instructions with most executing in a single cycle, 32 general purpose working registers, and an on-chip LCD controller supporting up to 4x40 segments. The picoPower technology enables low sleep-mode currents for battery-operated designs. The advanced RISC architecture combines a rich instruction set with fast single-cycle ALU operation, delivering up to 16 MIPS throughput at 16 MHz. Integrated peripherals include an 8-channel 10-bit ADC, multiple timers/pWM channels, USART serial interfaces, SPI, TWI (I2C), and JTAG for on-chip debugging, allowing a single chip to replace MCU plus dedicated LCD driver plus external ADC solutions. Typical applications include utility metering with LCD displays, industrial control panels, battery-powered instrumentation, and white-goods human-machine interfaces where the integrated segment LCD driver and 69 general purpose I/O lines simplify board design. When designing with this device, the -AI suffix denotes the industrial temperature range of -40C to +85C; verify JTAG fuse settings before debugging, since JTAG can be disabled by default. Place 100 nF decoupling capacitors at each VCC/GND pair. This page synthesizes verified distributor data, same-family drop-in alternatives, and practical design notes not found in a single manufacturer source.

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ATMEGA6490-16AU

ATMEGA6490-16AU - 8-Bit AVR MCU 16MHz 64KB LCD | Microchip

The Microchip (Atmel) ATMEGA6490-16AU is a high-performance picoPower 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 4KB SRAM, 2KB EEPROM, an integrated 4x40-segment LCD driver, and 16MHz maximum clock speed, housed in a 100-pin TQFP (14x14 mm) package. A microcontroller (MCU) is a single-chip computer that integrates a processor core, program memory, data memory, and peripherals onto one die, sitting at the device level of the embedded-systems hierarchy (embedded system -> MCU -> 8-bit AVR family -> ATmega series). The AVR architecture uses a Harvard-structured RISC core with most instructions executing in a single clock cycle, distinguishing it from von Neumann CISC MCUs of the same era. Key features include 64KB of self-programmable ISP Flash with read-while-write support, 54/69 general-purpose I/O lines, 32 general-purpose working registers, an 8-channel 10-bit ADC, and the integrated LCD controller that eliminates an external LCD driver in instrument designs. The picoPower technology provides multiple sleep modes for very low average power in battery-operated products. A JTAG interface supports boundary-scan testing and on-chip debugging. Technical depth: the ATmega6490 belongs to the ATmega3290/6490 LCD MCU family; the 130-instruction RISC core reaches up to 16 MIPS at 16MHz, while supply operation spans 2.7V to 5.5V for the 16MHz speed grade, covering both 3.3V and 5V logic systems. Typical applications include utility meters and energy meters with segment LCD displays, handheld industrial instruments, HVAC control panels, and consumer appliances that combine modest processing with dot/segment LCD feedback. Design consideration: the 100-TQFP package with fine 0.5 mm pin pitch requires careful PCB land-pattern design and good decoupling on every VCC/AVCC pin pair; the 16AU grade requires 2.7V minimum supply at full 16MHz operation, so derate clock speed or use the V grade at lower voltages. This page synthesizes distributor pricing, drop-in same-footprint alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-18.

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ATMEGA6490-16AUR

ATMEGA6490-16AUR - 8-bit AVR MCU 64KB Flash 16MHz LCD | Microchip

The Microchip Technology ATMEGA6490-16AUR is a picoPower 8-bit AVR RISC microcontroller with 64KB ISP Flash, 2KB EEPROM, 4KB SRAM, an integrated LCD controller, and 16MHz maximum clock speed, housed in a 100-pin TQFP (14x14 mm) package for tape-and-reel assembly. An 8-bit AVR microcontroller is a single-chip embedded processor built on the AVR enhanced RISC architecture, in which most of the 130 instructions execute in a single clock cycle. Within the system hierarchy, it spans microcontroller -> embedded processor -> integrated circuit, combining program memory, data memory, peripherals, and CPU on one die. The ATmega6490 belongs to the LCD AVR family, which adds a segment LCD driver to the standard ATmega peripheral set. Key features include 64KB (32K x 16) self-programming Flash with read-while-write capability, 54/69 general purpose I/O lines, a 4 x 40 segment LCD controller, an 8-channel 10-bit ADC, and a JTAG interface for boundary-scan and on-chip debugging. The 16MHz rating at 4.5-5.5V delivers up to 16 MIPS throughput, while picoPower technology minimizes consumption in sleep modes for battery-backed designs. Technically, the AVR core uses 32 general purpose working registers directly connected to the ALU, giving single-cycle execution and high code density. ISP (in-system programmable) Flash allows firmware updates on the assembled board, and the EEPROM retains calibration data through power cycles. Typical applications include utility metering with LCD displays, industrial control panels, battery-powered instrumentation, and building automation front ends where an integrated segment LCD driver eliminates an external LCD controller IC. Design-wise, decouple VCC/AVCC with 100nF ceramics per supply pin and route LCD segment lines away from the analog front end to protect ADC accuracy. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA6490A-AUR

ATMEGA6490A-AUR - 8-bit AVR MCU, 64KB Flash, LCD | Microchip

The Microchip Technology ATMEGA6490A-AUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 2KB EEPROM, 4KB SRAM, and an integrated LCD controller, operating at up to 20MHz in a 100-pin TQFP (14x14 mm) package. An 8-bit AVR ATmega microcontroller is a single-chip computer that executes a reduced instruction set (RISC) entirely from embedded Flash. Within the power-management hierarchy, an MCU sits at the system-control layer above discrete logic and below application processors: it combines CPU, memory, timers, communication peripherals, and in this family, a segment LCD driver on one die. The AVR architecture connects 32 general-purpose working registers directly to the arithmetic logic unit (ALU), so two independent registers can be accessed in a single instruction executed in one clock cycle, achieving throughputs up to ten times faster than conventional CISC microcontrollers. Key features of the ATmega6490A include 54/69 general purpose I/O lines, a JTAG interface supporting boundary-scan, on-chip debugging and programming, a complete on-chip LCD controller with internal contrast control, and three flexible timers with compare modes and PWM. The 64KB Flash supports read-while-write self-programming, enabling in-system firmware updates without an external programmer. Technically, the AVR core executes 130 powerful instructions, most in a single clock cycle. The self-programming Flash enables bootloader implementations, while the LCD controller drives multi-segment displays directly, eliminating an external LCD driver and reducing BOM cost and board area in battery-powered instruments. Typical applications include utility metering with segmented LCD displays, handheld measurement instruments, industrial control panels, and battery-powered consumer devices where the low-power AVR core and integrated LCD drive are decisive. For design, budget the peripheral set early: with 69 I/O lines and an LCD panel, pin multiplexing between LCD segment lines and general-purpose I/O must be mapped before PCB layout, as segment pins overlap parallel ports. This page synthesizes distributor pricing, same-family drop-in alternatives, pinout guidance, and practical design notes not found together on the manufacturer datasheet. Pricing shown as of 2026-09-18.

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ATMEGA6490P-AUR

ATMEGA6490P-AUR - 8-bit AVR MCU 64KB Flash LCD | Microchip

The Microchip Technology ATMEGA6490P-AUR is a high-performance picoPower 8-bit AVR RISC microcontroller with 64 KB ISP Flash memory, 2 KB EEPROM, 4 KB SRAM, and an integrated segment LCD driver, packaged in a 100-pin TQFP (14x14 mm) for industrial temperature operation. An 8-bit AVR microcontroller is a reduced-instruction-set (RISC) single-chip computer that executes most of its 130 instructions in a single clock cycle. Within the power-management hierarchy, it combines the CPU, program memory, data memory, peripherals, and an LCD controller in one IC, making it a member of the broader microcontroller (MCU) family used in embedded systems. Key features include up to 20 MHz maximum clock frequency, 54 general purpose I/O lines (69 I/O including LCD segment pins), read-while-write self-programming Flash, and an on-chip LCD controller capable of driving a large glass with up to 4 backplane/common terminals. The picoPower technology delivers industry-low power consumption in all active and sleep modes, which is essential for battery-operated instruments. Technically, the AVR advanced RISC architecture provides 32 general purpose working registers directly connected to the ALU, allowing one-cycle execution and achieving throughput near 1 MIPS per MHz. In-system programmable (ISP) Flash with boot-section self-programming enables field firmware updates, while the on-chip debug via debugWIRE-type tooling and ICSP simplifies development with MPLAB Snap and similar programmers. Typical applications include utility metering with LCD displays, handheld measurement instruments, industrial control panels, and battery-powered human-interface devices where an integrated segment LCD driver removes the need for a separate LCD controller. When designing with this device, verify the clock-voltage relationship: operation at the full 20 MHz rating requires the higher end of the supply range, while lower supply voltages constrain the maximum safe clock frequency per the AVR frequency-vs-voltage curve in the manufacturer datasheet. This page synthesizes distributor listings, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, with pricing references as of 2026-09-18.

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ATMEGA6490V-8AI

ATMEGA6490V-8AI - 8-Bit AVR MCU, 64KB Flash, 8MHz | Microchip

The Microchip ATMEGA6490V-8AI is an 8-bit AVR RISC microcontroller with 64KB of In-System Programmable (ISP) Flash memory, 4KB SRAM, 2KB EEPROM, and an integrated LCD controller, operating at up to 8 MHz in a 100-pin TQFP (14x14 mm) package. The V suffix indicates operation down to 1.8V, and the I suffix denotes an industrial -40C to +85C temperature range. A microcontroller (MCU) is a single-chip embedded computer that integrates a processor core, program memory, data memory, and peripherals such as timers, UARTs, and ADCs. Within the embedded system hierarchy, the ATmega6490V belongs to the AVR ATmega family of 8-bit MCUs, sitting in the large-memory, large-pin-count, LCD-capable tier used in human-interface equipment. Key features include an advanced RISC architecture with 130 mostly single-cycle instructions, read-while-write self-programming Flash, 54/69 general-purpose I/O lines, and an on-chip LCD driver that can drive up to 160 segment pixels, which eliminates an external LCD controller in metering and display applications. The picoPower technology provides low active and sleep current consumption for battery-powered designs. Technically, the device pairs the AVR core with 32 general-purpose working registers, a hardware multiplier, JTAG (debugWIRE/ICE support via JTAG on this family), and rich peripherals including USARTs, SPI, timers with PWM, and an analog comparator, making it suitable for firmware that combines UI rendering with measurement tasks. Typical applications include utility metering, LCD-based industrial panels, HVAC controllers, and battery-operated handheld instruments where a low-voltage supply (down to 1.8V) and integrated segment LCD drive reduce system cost. A key design consideration: the V-speed-grade device is limited to 8 MHz and, at supply voltages below 2.7V, safe operating frequency may be further constrained per the datasheet speed-versus-voltage curve; always derate clock speed for low-VDD designs. This page synthesizes distributor pricing context, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with pricing referenced as of 2026-09-18.

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ATMEGA6490V-8AU

ATMEGA6490V-8AU - 8-bit AVR MCU 64KB 8MHz 100-TQFP | Microchip

The Microchip Technology ATMEGA6490V-8AU is a picoPower 8-bit AVR RISC microcontroller with 64KB (32K x 16) ISP Flash, 2KB EEPROM, 4KB SRAM, an integrated LCD controller, and a maximum clock frequency of 8MHz, housed in a 100-pin TQFP (14x14 mm) package. It belongs to the AVR ATmega family of microcontroller units (MCUs), which sit within the broader embedded processor hierarchy of 8-bit RISC microcontrollers -> microcontrollers -> integrated circuits. A microcontroller of this class combines a CPU core, program memory, data memory, and peripherals on a single chip, eliminating external glue logic for embedded control systems. The ATmega family is widely used wherever low power and deterministic single-cycle instruction execution are required. Key features include 130 powerful instructions with mostly single-cycle execution, read-while-write self-programming Flash, 54/69 general-purpose I/O lines, a JTAG interface for boundary-scan and on-chip debugging, and an integrated segment LCD driver that differentiates the ATmega6490 from standard ATmega parts. The picoPower technology family provides multiple sleep modes for ultra-low standby current in battery-powered designs. Architecturally, the AVR core uses a Harvard structure with 32 general-purpose working registers directly connected to the ALU, allowing one instruction to execute per clock cycle for high code efficiency. Self-programming Flash enables in-system programmability and boot-loader operation without external programmers in the field. Typical applications include battery-operated devices with LCD user interfaces such as utility meters, thermostats, handheld instruments, and industrial control panels. The built-in LCD controller reduces bill-of-material cost by removing an external LCD driver IC. Design consideration: the V-grade speed grade limits operation to 8MHz across the 1.8V to 5.5V supply range; if your application needs 16MHz at 5V, select the standard ATmega6490A/P grade instead. This page synthesizes distributor pricing, drop-in alternatives within the ATmega LCD family, and practical design notes not found in the manufacturer datasheet.

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ATMEGA6490V-8AUR

ATMEGA6490V-8AUR - 8-bit AVR MCU 64KB LCD 8MHz TQFP-100 | Microchip

The Microchip Technology ATMEGA6490V-8AUR is a picoPower 8-bit AVR RISC microcontroller with 64KB ISP Flash (32K x 16), 2KB EEPROM, 4KB SRAM, an integrated segment LCD controller, and up to 69 general purpose I/O lines, clocked at up to 8 MHz at 1.8V-5.5V and housed in a 100-pin TQFP (14x14 mm) package in tape-and-reel packing. An 8-bit AVR microcontroller is a single-chip processor built around the AVR enhanced RISC architecture, executing most instructions in a single clock cycle. Within the system hierarchy, it sits at the embedded processing layer of a design, combining a CPU core, program memory (Flash), data memory (SRAM and EEPROM), peripherals, and an LCD driver in one integrated circuit, replacing a discrete MCU plus external LCD controller combination. Key features include 64KB of self-programmable ISP Flash with read-while-write support, a JTAG interface for boundary-scan, on-chip debugging, and programming, an integrated LCD controller with support for up to 4x100 segment drive for glass directly driven by the MCU, and picoPower technology for microamp-level sleep currents. The 'V' speed grade guarantees full operation down to 1.8V, enabling single-cell or low-voltage battery designs. Technically, the device combines 32 general purpose working registers with a two-stage pipeline Harvard architecture, delivering close to 1 MIPS per MHz. Peripheral set includes multiple timers, USARTs, SPI, and TWI (I2C), all clocked from internal RC or external crystal sources with a brown-out detector and power-on reset for supply robustness. Typical applications include battery-powered metering (utility meters with direct LCD glass drive), handheld instruments with segmented displays, and industrial control panels where an MCU plus LCD in one chip reduces board area and quiescent power. A key design consideration: the 'V' grade tops out at 8 MHz; if your design needs 16 MHz or 20 MHz at 5V, select the ATmega6490A/P family instead. This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA649A-AUR

ATMEGA649A-AUR - 8-Bit AVR MCU, 64KB Flash, TQFP-64 | Microchip

The Microchip Technology ATMEGA649A-AUR is a high-performance, low-power 8-bit AVR RISC microcontroller with 64 KB in-system programmable (ISP) Flash memory, 2 KB EEPROM, 4 KB SRAM, and an on-chip LCD controller, packaged in a 64-pin TQFP (14x14 mm) surface-mount package. The device executes most of its 130 powerful instructions in a single clock cycle and runs at clock speeds up to 16 MHz at 4.5V to 5.5V supply, delivering up to 16 MIPS of throughput. A microcontroller unit (MCU) is a complete self-contained computing system on a single chip, integrating a processor core, program memory, data memory, and peripherals. In the voltage regulator hierarchy of embedded systems, an MCU sits at the application layer, orchestrating sensors, displays, and actuators. The AVR family, originally developed by Atmel and now manufactured by Microchip Technology, is one of the most widely adopted 8-bit RISC MCU architectures, also forming the basis of the classic Arduino platform. Key differentiating features include self-programming Flash with read-while-write capability for field firmware updates, 54 general-purpose I/O lines, an integrated LCD controller with internal contrast control capable of driving segmented glass displays without an external driver, and a JTAG interface for boundary-scan testing and on-chip debugging and programming. Technically, the ATmega649A uses an advanced AVR RISC Harvard architecture with 32 general-purpose working registers directly connected to the arithmetic logic unit, allowing one-cycle execution of most instructions. Three flexible timer/counters with compare modes, internal and external interrupt sources, a programmable serial USART, and a byte-oriented two-wire serial interface round out the peripheral set. Typical applications include utility metering and battery-powered instruments that require an LCD display, industrial control panels, hand-held measurement devices, and consumer appliances needing segment-display feedback with minimal external components. When designing, note the 5V operating window of 4.5V to 5.5V; select the ATmega649V variant for lower-voltage 2.7V to 5.5V operation at reduced clock speed. This page synthesizes verified distributor data, pin-compatible drop-in alternatives, drop-in comparison tables, and practical design notes not found in the manufacturer datasheet.

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ATMEGA649A-MU

ATMEGA649A-MU - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

The Microchip Technology ATMEGA649A-MU is an 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 2KB EEPROM, 4KB SRAM, and a maximum clock speed of 16 MHz, housed in a 64-pin QFN (9x9 mm) package with exposed pad. An 8-bit microcontroller is a single-chip computer whose CPU processes data in 8-bit words. Within the embedded systems hierarchy, the AVR ATmega family sits under the broader microcontroller (MCU) category, which combines a processor core, program memory, data memory, and peripherals in one integrated circuit, making it a fundamental building block of embedded control systems alongside competing architectures such as PIC, 8051, and ARM Cortex-M based devices. Key features of the ATMEGA649A-MU include 64KB of in-system programmable Flash with read-while-write capability, 54 to 69 general purpose I/O lines depending on package, 32 general purpose working registers, and an on-chip JTAG interface for boundary-scan and in-system debugging. The AVR enhanced RISC core executes most instructions in a single clock cycle, delivering throughput of up to 16 MIPS at 16 MHz. Technically, the device belongs to the ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P family and operates from a supply voltage of 4.5V to 5.5V at the full 16 MHz speed grade (industrial temperature, 20 MHz capable per some package grades). Peripherals typically include USART, SPI, and two-wire interfaces, timers/counters, and an LCD controller on the 649 variant, enabling direct segment LCD driving. Typical applications include industrial control panels with segment LCD displays, consumer appliance user interfaces, metering products, and low-power battery-backed measurement instruments where single-cycle RISC execution and rich I/O reduce external component count. A key design consideration is supply voltage versus clock speed: at 4.5V to 5.5V the device runs at its rated 16 MHz; operating at lower voltages requires derating the maximum clock frequency per the datasheet speed-versus-voltage curve. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a single decision-ready reference for the ATMEGA649A-MU.

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ATMEGA649P-AUR

ATMEGA649P-AUR - AVR 8-bit MCU 64KB Flash LCD | Microchip

The Microchip Technology ATMEGA649P-AUR is a picoPower 8-bit AVR RISC microcontroller with 64KB ISP Flash memory (read-while-write), 2KB EEPROM, 4KB SRAM, and an integrated LCD controller, clocked at up to 16MHz in a 64-pin TQFP package with industrial temperature rating and green/RoHS tape-and-reel packing. An 8-bit AVR microcontroller (MCU) is a Harvard-architecture processor that executes most instructions in a single clock cycle, sitting within the broader hierarchy of embedded processors under microcontrollers, under the power- and cost-sensitive embedded systems category. The ATmega649P belongs to the ATmega LCD series (ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P family), which pairs general-purpose MCU peripherals with a segment LCD driver for glass-driving applications. Key features include 54/69 general purpose I/O lines, 32 general purpose working registers, a JTAG interface for on-chip debug and boundary scan, and picoPower technology for ultra-low sleep-mode consumption. The P-suffix devices are drop-in replacements for the non-P ATmega649, produced on an improved process with lower power figures, and are subject to the same qualification and production test flow per Microchip application note AVR534. The peripheral set includes an 8-bit timer/counter with PWM, a 16-bit timer/counter, SPI, USART, an analog comparator, a 10-bit ADC on related family members, and an LCD controller capable of driving segment glass directly - eliminating an external LCD driver IC in metering and appliance designs. ISP Flash with read-while-write allows firmware updates in the field without halting execution. Typical applications include utility metering (energy and water meters with LCD displays), battery-powered handheld instruments, white-goods appliance panels, and industrial HMI front-ends where the integrated LCD driver and low sleep current extend battery life. Design consideration: the picoPower benefits are realized only with correct sleep-mode selection (power-save or standby) and disabled unused peripherals; the 16MHz maximum CPU frequency is voltage-dependent, so derate clock speed at the low end of the supply range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ATMEGA649P-MU

ATMEGA649P-MU - 8-bit AVR MCU 64KB Flash LCD 16MHz | Microchip

The Microchip Technology ATMEGA649P-MU is a picoPower 8-bit AVR RISC microcontroller with 64KB ISP Flash memory, 2KB EEPROM, 4KB SRAM, an integrated LCD controller, and up to 16MHz operation, housed in a 64-pin QFN (9x9 mm) package. A microcontroller unit (MCU) is a single-chip computer that integrates a processor core, memory, and peripherals such as timers, USART, SPI, and analog comparators. The 8-bit AVR ATmega family sits within the broader microcontroller hierarchy (embedded processor -> microcontroller -> 8-bit MCU -> AVR ATmega), and the ATmega649P variant adds a segment LCD driver that many general-purpose MCUs lack, making it a complete human-interface solution on a single chip. Key features include 64KB of in-system programmable Flash with read-while-write capability, 54/69 general purpose I/O lines, 32 general purpose working registers, and a JTAG interface for on-chip debugging and boundary-scan. The picoPower technology delivers industry-leading low power consumption across all sleep modes, supporting battery-powered designs. The integrated LCD controller can drive segmented displays directly, eliminating an external LCD driver IC. Architecturally, the AVR core executes most instructions in a single clock cycle through its Harvard-architecture pipelining, achieving up to 16 MIPS at 16MHz. The device operates from a 1.8V to 5.5V supply, covering both battery and 5V industrial rails, and is rated for industrial temperature ranges. Typical applications include utility metering with LCD displays, handheld measurement instruments, battery-operated industrial panels, and consumer appliances requiring segmented displays and long battery life. When designing with this device, budget the Flash for both code and read-while-write data logging, and place a 0.1uF decoupling capacitor on each supply pin pair with a solid ground paddle connection under the QFN exposed pad. This page synthesizes verified distributor pricing, drop-in family alternatives, and practical design guidance not found on the manufacturer datasheet alone.

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製品 (38,000+)

ATMEGA645A-MUR - 8-bit AVR MCU 64KB Flash 64-QFN | Microchip

ATMEGA645P-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip

ATMEGA645P-AUR - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip

ATMEGA645P-MU - 8-Bit AVR MCU 64KB 16MHz 64-QFN | Microchip

ATMEGA645P-MUR - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

ATMEGA645V-8AI - 64KB AVR MCU, 8MHz, TQFP-64 | Microchip

ATMEGA645V-8AUR - 8-bit AVR MCU 64KB Flash 8MHz | Microchip

ATMEGA645V-8MUR - 8MHz AVR 64KB Flash MCU | Microchip

ATMEGA649-16AI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip

ATMEGA649-16AU - 8-Bit AVR MCU 64KB LCD | Microchip

ATMEGA649-16MU - 8-bit AVR MCU 64KB Flash 16MHz 64-QFN | Microchip

ATMEGA649-16MUR - 8-bit AVR MCU 64KB 16MHz LCD | Microchip

ATMEGA6490-16AI - 64KB Flash 16MHz AVR LCD MCU | Microchip

ATMEGA6490-16AU - 8-Bit AVR MCU 16MHz 64KB LCD | Microchip

ATMEGA6490-16AUR - 8-bit AVR MCU 64KB Flash 16MHz LCD | Microchip

ATMEGA6490A-AUR - 8-bit AVR MCU, 64KB Flash, LCD | Microchip

ATMEGA6490P-AUR - 8-bit AVR MCU 64KB Flash LCD | Microchip

ATMEGA6490V-8AI - 8-Bit AVR MCU, 64KB Flash, 8MHz | Microchip

ATMEGA6490V-8AU - 8-bit AVR MCU 64KB 8MHz 100-TQFP | Microchip

ATMEGA6490V-8AUR - 8-bit AVR MCU 64KB LCD 8MHz TQFP-100 | Microchip

ATMEGA649A-AUR - 8-Bit AVR MCU, 64KB Flash, TQFP-64 | Microchip

ATMEGA649A-MU - 8-bit AVR MCU 64KB Flash 16MHz | Microchip

ATMEGA649P-AUR - AVR 8-bit MCU 64KB Flash LCD | Microchip

ATMEGA649P-MU - 8-bit AVR MCU 64KB Flash LCD 16MHz | Microchip