{"product_id":"atmega644a-mur","title":"ATMEGA644A-MUR","description":"\u003cp\u003eThe ATMEGA644A-MUR is a high-performance 8-bit AVR microcontroller from Microchip Technology, offering 64KB of flash memory and 4KB of SRAM in a compact 44-VFQFN package. Operating from 1.8V to 5.5V and up to 20MHz, it provides a perfect balance of power efficiency and processing capability. With integrated brown-out detection, power-on reset, PWM channels, and a watchdog timer, this MCU ensures reliable operation in demanding environments. Its wide temperature range (-40°C to 85°C) makes it suitable for industrial and automotive applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Voltage Range (1.8V-5.5V):\u003c\/strong\u003e Enables direct operation from 3.3V or 5V systems without extra level shifters, simplifying design.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Flash Density (64KB):\u003c\/strong\u003e Allows complex firmware with room for bootloaders and data logging, reducing the need for external EEPROM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Consumption:\u003c\/strong\u003e Multiple sleep modes and a watchdog timer extend battery life in portable applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Package (44-VFQFN):\u003c\/strong\u003e Exposed pad improves thermal dissipation, ensuring stable performance at high ambient temperatures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIndustrial Automation Controllers\u003c\/h3\u003e\u003cp\u003eWith a wide voltage range (1.8V-5.5V) and robust I\/O, the ATMEGA644A-MUR can handle 24V industrial logic levels with proper interfacing, while its 20MHz speed ensures responsive control loops.\u003c\/p\u003e\u003ch3\u003eSmart Sensor Nodes\u003c\/h3\u003e\u003cp\u003eThe low-power sleep modes and brown-out detection make it ideal for battery-operated sensors that need reliable operation over years without maintenance.\u003c\/p\u003e\u003ch3\u003eHome Automation Hubs\u003c\/h3\u003e\u003cp\u003eIts 64KB flash allows storing complex automation routines, while PWM channels can dim LEDs or control motor speeds for smart blinds and thermostats.\u003c\/p\u003e\u003ch3\u003ePortable Medical Devices\u003c\/h3\u003e\u003cp\u003eThe 5.5V maximum supply and -40°C to 85°C range support wearable health monitors that must operate reliably in varying environmental conditions.\u003c\/p\u003e\u003ch3\u003eAutomotive Aftermarket Modules\u003c\/h3\u003e\u003cp\u003eWith a watchdog timer and POR, it can be used in car alarm systems or telematics units where system reset and fault recovery are critical.\u003c\/p\u003e\u003ch3\u003eEducational Robotics Kits\u003c\/h3\u003e\u003cp\u003eThe AVR architecture is well-documented, and the 44-pin QFN package allows compact PCB designs for hobbyist robots with multiple sensors and actuators.\u003c\/p\u003e\u003ctable\u003e\n\u003ccolgroup\u003e\u003ccol\u003e\u003c\/colgroup\u003e \u003ctbody\u003e \u003ctr\u003e \t\u003ctd\u003eProduct attributes\u003c\/td\u003e \t\u003ctd\u003eProperty Value\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eManufacturer\u003c\/td\u003e \t\u003ctd\u003eMicrochip Technology\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProduct Series\u003c\/td\u003e \t\u003ctd\u003eAVR® ATmega\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackaging\u003c\/td\u003e \t\u003ctd\u003eCut Tape (CT) | Tape \u0026amp; Reel (TR)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eCore Processor\u003c\/td\u003e \t\u003ctd\u003eAVR\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eCore Size\u003c\/td\u003e \t\u003ctd\u003e8-Bit\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSpeed\u003c\/td\u003e \t\u003ctd\u003e20MHz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eConnectivity\u003c\/td\u003e \t\u003ctd\u003eI2C, SPI, UART\/USART\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePeripherals\u003c\/td\u003e \t\u003ctd\u003eBrown-out Detect\/Reset, POR, PWM, WDT\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eNumber of I\/O\u003c\/td\u003e \t\u003ctd\u003e32\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProgram Memory Size\u003c\/td\u003e \t\u003ctd\u003e64KB (32K x 16)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eProgram Memory Type\u003c\/td\u003e \t\u003ctd\u003eFLASH\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eEEPROM Size\u003c\/td\u003e \t\u003ctd\u003e2K x 8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eRAM Size\u003c\/td\u003e \t\u003ctd\u003e4K x 8\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eVoltage - Supply (Vcc\/Vdd)\u003c\/td\u003e \t\u003ctd\u003e1.8V ~ 5.5V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eData Converters\u003c\/td\u003e \t\u003ctd\u003eA\/D 8x10b\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOscillator Type\u003c\/td\u003e \t\u003ctd\u003eInternal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eOperating Temperature\u003c\/td\u003e \t\u003ctd\u003e-40°C ~ 85°C (TA)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eGrade\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eQualification AEC\u003c\/td\u003e \t\u003ctd\u003e-\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eMounting Type\u003c\/td\u003e \t\u003ctd\u003eSurface Mount\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003eSupplier Device Package\u003c\/td\u003e \t\u003ctd\u003e44-VQFN (7x7)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \t\u003ctd\u003ePackage \/ Case\u003c\/td\u003e \t\u003ctd\u003e44-VFQFN Exposed Pad\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e   \u003ctd\u003eROHS\u003c\/td\u003e   \u003ctd\u003e\u003cimg class=\"ROSHICON\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/ROHSICON.png?v=1757832376\"\u003e\u003c\/td\u003e  \u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the maximum operating frequency of the ATMEGA644A-MUR?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: The ATMEGA644A-MUR operates at up to 20 MHz.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What is the supply voltage range?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: It supports 1.8V to 5.5V, making it suitable for battery-powered and 5V systems.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: How much flash memory and RAM does it have?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: It features 64KB of flash and 4KB of SRAM.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: What package is available?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: It comes in a 44-VFQFN exposed pad package.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ: Does it include a watchdog timer?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eA: Yes, it has a WDT along with brown-out detection and POR.\u003c\/dd\u003e\n\u003c\/dl\u003e","brand":"Microchip Technology","offers":[{"title":"Default Title","offer_id":50882335867169,"sku":"ATMEGA644A-MUR","price":5.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0910\/9756\/3425\/files\/IC_MCU_150_44M1_44_51647839-1aa1-4a5c-a127-b3fc89564fd2.jpg?v=1739197593","url":"https:\/\/hqickey.com\/products\/atmega644a-mur","provider":"HQICKEY","version":"1.0","type":"link"}