ATMEGA644P-20MQ
- Mfr.Part #
- ATMEGA644P-20MQ
- Manufacturer
- Microchip Technology
- Package / Case
- 44-VFQFN Exposed Pad
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 44VQFN
- Stock
- 28,167
- In Stock :
- 28,167
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Min Operating Temperature :
- -40 °C
- Base Product Number :
- ATMEGA644
- Max Frequency :
- 20 MHz
- Factory Lead Time :
- 7 Weeks
- Width :
- 7 mm
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Mount :
- Surface Mount
- Data Converters :
- A/D 8x10b
- EEPROM Size :
- 2K x 8
- On Chip Program ROM Width :
- 16
- Height :
- 0.88 mm
- Core Architecture :
- AVR
- DAC Channels :
- No
- Core Processor :
- AVR
- Number of I/O :
- 32
- Mounting Style :
- SMD/SMT
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Terminal Pitch :
- 0.5mm
- Interfaces :
- SPI/USART
- RoHS :
- Details
- Contact Plating :
- Tin
- Length :
- 7mm
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Packaging :
- Tray
- Supply Voltage-Max (Vsup) :
- 5.5V
- Supplier Device Package :
- 44-VQFN (7x7)
- Series :
- AVR® ATmega
- Surface Mount :
- yes
- Oscillator Type :
- Internal
- Number of Terminations :
- 44
- Program Memory Size :
- 64KB 32K x 16
- Tradename :
- AVR
- Terminal Position :
- QUAD
- DMA Channels :
- No
- Data Converter :
- A/D 8x10b
- Memory Type :
- Flash
- Product :
- MCU
- Screening Level :
- TS 16949
- Has ADC :
- yes
- Number of Programmable I/O :
- 32
- ROM Programmability :
- Flash
- Number of I/O Lines :
- 32
- Interface :
- 2-Wire, I2C, SPI, UART, USART
- Seated Height-Max :
- 1 mm
- Core Size :
- 8-Bit
- Minimum Operating Temperature :
- - 40 C
- JESD-30 Code :
- S-PQCC-N44
- RAM Size :
- 4K x 8
- Product Category :
- 8-bit Microcontrollers - MCU
- Maximum Operating Temperature :
- + 85 C
- Subcategory :
- Microcontrollers - MCU
- Pbfree Code :
- yes
- Operating Temperature :
- -40°C~105°C TA
- Number of Terminals :
- 44
- Min Supply Voltage :
- 2.7 V
- Memory Size :
- 64KB
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Package :
- Tray
- Brand :
- Microchip Technology
- Number of Timers/Counters :
- 3
- PWM Channels :
- yes
- Base Part Number :
- ATMEGA644P
- Supply Voltage :
- 5V
- Program Memory Type :
- Flash
- Terminal Form :
- NO LEAD
- Bit Size :
- 8
- Max Operating Temperature :
- 85 °C
- Device Core :
- AVR
- Mounting Type :
- Surface Mount
- Reach Compliance Code :
- Compliant
- Manufacturer :
- Microchip
- Data Bus Width :
- 8B
- Interface Type :
- 2-Wire, JTAG, SPI, USART
- Package / Case :
- 44-VFQFN Exposed Pad
- Additional Feature :
- OPERATES AT 2.7 V MIN @ 10 MHZ
- Number of I/Os :
- 32 I/O
- Product Type :
- 8-bit Microcontrollers - MCU
- RoHS Status :
- ROHS3 Compliant
- Product Status :
- Active
- Height Seated (Max) :
- 1mm
- Package Shape :
- Square
- Supply Voltage-Min (Vsup) :
- 4.5V
- Connectivity :
- I2C, SPI, UART/USART
- Max Supply Voltage :
- 5.5 V
- Frequency :
- 20MHz
- Published :
- 1997
- Number of Pins :
- 44
- Speed :
- 20MHz
- Datasheets
- ATMEGA644P-20MQ

Microcontrollers Microchip Technology ATMEGA644P-20MQ Overview
The ATMEGA644P-20MQ by Microchip Technology stands as a robust microcontroller unit (MCU) within the versatile AVR microcontroller series, designed to offer a balance of performance and power efficiency. Engineered with a high-density non-volatile memory, this MCU boasts 64KB of flash, making it ideal for complex applications requiring substantial code or data storage. The integration in a compact 44-VQFN package allows for minimized footprint in circuit designs, making it suitable for space-constrained applications. This MCU operates efficiently at 20 MHz, ensuring swift processing and responsiveness in embedded systems. With Microcontrollers Microchip Technology ATMEGA644P-20MQ, developers can achieve enhanced system reliability and advanced capabilities in industrial and commercial products.
ATMEGA644P-20MQ Features
The ATMEGA644P-20MQ is packed with features that make it a highly functional and adaptable choice for a variety of applications. Key features include its 8-bit processor, 64KB of in-system programmable flash, and 2KB of EEPROM. It supports a wide operating voltage range of 1.8V to 5.5V, catering to low-power and standard operations. Additional capabilities such as multiple programmable serial USARTs, Master/Slave SPI serial interface, and a two-wire serial interface (TWI) enhance its ability to handle complex communication tasks. The device also incorporates multiple 10-bit ADCs, providing accurate analog sensor integration essential for data-driven applications.
ATMEGA644P-20MQ Applications
- Home Automation Systems: Integrates seamlessly to control and monitor systems, such as lighting and heating, via SPI and USART interfaces for enhanced home management.
- Industrial Control: Utilizes its robust I/O capabilities and ADCs to manage and execute control processes in manufacturing lines, ensuring precision and efficiency in operations.
- Medical Devices: Employs its precise analog to digital conversion for monitoring critical parameters in medical diagnostics equipment, providing reliable and accurate readings.
- Automotive Applications: Supports automotive designs by managing sensor data and executing control commands essential for automotive electronics, enhancing vehicle performance and safety.
- Consumer Electronics: Applied in various consumer electronics like handheld devices, where its power efficiency and processing capabilities ensure optimal operation and extended battery life.
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