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

Microcontrollers Microchip Technology ATMEGA644-20MU Overview
The ATMEGA644-20MU, a robust microcontroller from Microchip Technology, stands out in the world of embedded systems with its high-performance 8-bit AVR architecture. Designed to deliver efficiency and versatility, this MCU is ideal for applications requiring a perfect balance of power consumption and processing capability. With 64KB of in-system programmable flash, the ATMEGA644-20MU provides ample space for complex applications and the flexibility needed for future updates. This makes the Microcontrollers Microchip Technology ATMEGA644-20MU an excellent choice for designers looking to push the boundaries of what's possible with microcontroller technology.
ATMEGA644-20MU Features
The ATMEGA644-20MU boasts a comprehensive feature set that enhances its applicability in various demanding environments:
- 64KB ISP flash memory with read-while-write capabilities for efficient data handling.
- 2KB EEPROM, 4KB SRAM, expanding data storage options.
- Advanced RISC Architecture with up to 20 MIPS throughput at 20MHz, ensuring swift processing.
- Two 8-bit timers and two 16-bit timers for precise event management and PWM outputs.
- Full duplex USARTs, supporting serial communication with peripherals.
- Power-saving modes for increased battery life in portable applications.
- 44-pin VQFN package, designed for space-saving applications.
ATMEGA644-20MU Applications
- Industrial Automation: Empowers the control systems with its reliable processing capabilities to manage machinery and process data efficiently.
- Consumer Electronics: Ideal for powering smart home devices such as thermostats and home security systems, providing intelligent control and connectivity.
- Automotive Applications: Can be integrated into vehicle monitoring systems, enhancing dashboard functionalities and sensor integrations.
- Medical Devices: Utilized in portable medical diagnostics equipment, offering precise control and data management required for patient care.
- Communication Systems: Supports robust wired and wireless communication frameworks, suitable for networked devices in IoT deployments.
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