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