ATMEGA644-20MU
- Mfr.Part #
- ATMEGA644-20MU
- Manufacturer
- Atmel (Microchip Technology)
- Package / Case
- 44-VFQFN Exposed Pad
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 44VQFN
- Stock
- 9,562
- In Stock :
- 9,562
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- Atmel (Microchip Technology)
- Product Category :
- Microcontrollers
- Device Core :
- AVR
- Has ADC :
- yes
- Bit Size :
- 8
- Mount :
- Surface Mount
- EEPROM Size :
- 2K x 8
- Peak Reflow Temperature (Cel) :
- 260
- Terminal Position :
- QUAD
- Speed :
- 20MHz
- JESD-30 Code :
- S-XQCC-N44
- Number of Timers/Counters :
- 3
- Program Memory Type :
- Flash
- Package / Case :
- 44-VFQFN Exposed Pad
- Terminal Finish :
- Matte Tin (Sn)
- Watchdog Timer :
- yes
- Number of Pins :
- 44
- Width :
- 7 mm
- Number of I/O Lines :
- 32
- Additional Feature :
- ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ
- RAM (bytes) :
- 4096
- Lead Free :
- Lead Free
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Connectivity :
- I2C, SPI, UART/USART
- Interface Type :
- I2C, SPI, USART
- Program Memory Size :
- 64KB 32K x 16
- Interface :
- 2-Wire, I2C, SPI, UART, USART
- Minimum Operating Temperature :
- - 40 C
- Product :
- MCU
- REACH SVHC :
- No SVHC
- Number of Terminations :
- 44
- Core Processor :
- AVR
- Height Seated (Max) :
- 1mm
- Terminal Form :
- NO LEAD
- Core Architecture :
- AVR
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Operating Temperature :
- -40°C~85°C TA
- Package :
- Tray
- PWM Channels :
- yes
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Manufacturer :
- Microchip
- Seated Height-Max :
- 1 mm
- Package Shape :
- Square
- Core Size :
- 8-Bit
- RoHS :
- Compliant
- Surface Mount :
- yes
- Radiation Hardening :
- No
- Packaging :
- Tray
- Product Type :
- 8-bit Microcontrollers - MCU
- RoHS Status :
- ROHS3 Compliant
- Access Time :
- 20 μs
- Tradename :
- AVR
- Temperature Grade :
- Industrial
- Qualification :
- -
- Memory Type :
- Flash
- Number of I/O :
- 32
- Height :
- 0.88 mm
- Max Frequency :
- 20 MHz
- MSL :
- MSL 3 - 168 hours
- Product Category :
- 8-bit Microcontrollers - MCU
- Number of Programmable I/O :
- 32
- Base Part Number :
- ATMEGA644
- Supplier Device Package :
- 44-VQFN (7x7)
- JESD-609 Code :
- e3
- Contact Plating :
- Tin
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Supply Current-Max :
- 9 mA
- Power Supplies :
- 3/5 V
- Qualification Status :
- Not Qualified
- DAC Channels :
- No
- Data Converters :
- A/D 8x10b
- Min Supply Voltage :
- 2.7 V
- Interfaces :
- SPI/USART
- Supply Voltage :
- 5V
- Length :
- 7mm
- DAC Resolution :
- -
- Mounting Style :
- SMD/SMT
- Base Product Number :
- ATMEGA644
- Number of ADC Channels :
- 8 Channel
- Terminal Pitch :
- 0.5mm
- Max Supply Voltage :
- 5.5 V
- ROM (words) :
- 32768
- Number of Terminals :
- 44
- Supply Voltage-Max (Vsup) :
- 5.5V
- Maximum Operating Temperature :
- + 85 C
- Supply Voltage-Min (Vsup) :
- 4.5V
- Brand :
- Microchip Technology
- DMA Channels :
- No
- Pbfree Code :
- yes
- Product Status :
- Active
- Number of I/Os :
- 32
- Memory Size :
- 64KB
- ROM Programmability :
- Flash
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Max Operating Temperature :
- 85 °C
- CPU Family :
- AVR RISC
- Frequency :
- 20MHz
- Series :
- AVR® ATmega
- Published :
- 1997
- Mounting Type :
- Surface Mount
- RAM Size :
- 4K x 8
- Reach Compliance Code :
- Compliant
- Data Converter :
- A/D 8x10b
- Factory Lead Time :
- 7 Weeks
- Schedule B :
- 8542310000, 8542310000/8542310000/8542310000/8542310000/8542310000
- Min Operating Temperature :
- -40 °C
- Oscillator Type :
- Internal
- Data Bus Width :
- 8B
- Datasheets
- ATMEGA644-20MU
ATMEGA644-20MU Documents

Microcontrollers Atmel (Microchip Technology) ATMEGA644-20MU Overview
Introducing the ATMEGA644-20MU from Atmel (Microchip Technology), a high-performance microcontroller that combines advanced 8-bit AVR architecture with Microchip's robust design quality. This component is optimized for processing efficiency and operational flexibility, making it an ideal choice for developers seeking powerful yet cost-effective solutions. The ATMEGA644-20MU comes with 64KB of in-system programmable flash, allowing vast data storage and application versatility. It is designed to support a wide range of applications from consumer electronics to industrial automation, solidifying its status as a go-to microcontroller for scalable operations. The integration of numerous peripherals, such as USART, SPI, and two-wire interface, further boosts its utility and integration capabilities, securing its role in sophisticated and multifunctional systems.
ATMEGA644-20MU Features
The ATMEGA644-20MU microcontroller boasts a variety of features that enhance its performance and suitability for complex electronics. Key features include an 8-bit processor with a maximum speed of 20MHz, providing the necessary computational power for data-intensive applications. It also offers 64KB of flash memory, 2KB of EEPROM, and 4KB SRAM, offering ample space for program storage and data manipulation. Additional functionalities include 32 general-purpose I/O lines, 8-channel 10-bit A/D converter, and multiple programmable serial USARTs, making it incredibly versatile for various digital communication needs.
ATMEGA644-20MU Applications
- Consumer Electronics: Utilized in devices like smart home gadgets and personal entertainment systems, where its robust I/O capabilities allow for enhanced user interface and connectivity features.
- Industrial Automation: Applies its extensive GPIO suite and robust ADC features to manage multiple sensors and actuators, optimizing processes and improving system reliability.
- Automotive Systems: In automotive applications, the ATMEGA644-20MU controls and monitors systems, ensuring performance and safety through its high-speed processing and reliable data handling.
- Healthcare Devices: Supports the design of medical monitoring equipment by leveraging its precise ADC and power efficiency, ensuring accurate readings and longer battery life in portable devices.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















