ATMEGA644P-20AQR
- Mfr.Part #
- ATMEGA644P-20AQR
- Manufacturer
- Microchip Technology
- Package / Case
- 44-TQFP
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 44TQFP
- Stock
- 1,267
- In Stock :
- 1,267
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Length :
- 10mm
- Core Processor :
- AVR
- Max Operating Temperature :
- 85 °C
- Operating Temperature :
- -40°C~105°C TA
- Base Product Number :
- ATMEGA644
- Product Category :
- 8-bit Microcontrollers - MCU
- DMA Channels :
- No
- Number of Timers/Counters :
- 3
- Number of Pins :
- 44
- Supply Voltage-Min (Vsup) :
- 4.5V
- Has ADC :
- yes
- Series :
- AVR® ATmega
- Published :
- 2015
- Number of I/O Lines :
- 32
- Base Part Number :
- ATMEGA644P
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- ROM Programmability :
- Flash
- Frequency :
- 4MHz
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Max Supply Voltage :
- 5.5 V
- Core Architecture :
- AVR
- Terminal Position :
- QUAD
- Manufacturer :
- Microchip
- Core Size :
- 8-Bit
- Pbfree Code :
- yes
- Interfaces :
- I2C, SPI, USART
- Tradename :
- AVR
- Number of Terminals :
- 44
- RoHS :
- Details
- Reach Compliance Code :
- Compliant
- Supply Voltage :
- 5V
- Package Shape :
- Square
- Min Operating Temperature :
- -40 °C
- RoHS Status :
- ROHS3 Compliant
- Memory Type :
- FLASH, OTP
- Watchdog Timer :
- yes
- Product Status :
- Active
- Subcategory :
- Microcontrollers - MCU
- Connectivity :
- I2C, SPI, UART/USART
- Mount :
- Surface Mount
- Number of I/Os :
- 22
- Qualification :
- -
- Height Seated (Max) :
- 1.2mm
- Mounting Style :
- SMD/SMT
- Min Supply Voltage :
- 2.7 V
- Screening Level :
- TS 16949
- On Chip Program ROM Width :
- 16
- Additional Feature :
- OPERATES AT 2.7 V MIN @ 10 MHZ
- Seated Height-Max :
- 1.2 mm
- Data Bus Width :
- 8B
- Mounting Type :
- Surface Mount
- Terminal Form :
- Gull wing
- Data Converters :
- A/D 8x10b
- Contact Plating :
- Tin
- Number of Programmable I/O :
- 32
- Supplier Device Package :
- 44-TQFP (10x10)
- Interface :
- I2C, SPI, UART, USART
- EEPROM Size :
- 2K x 8
- Program Memory Type :
- Flash
- Product Type :
- 8-bit Microcontrollers - MCU
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Speed :
- 20 MHz
- Number of I/O :
- 32
- Bit Size :
- 8
- Terminal Pitch :
- 0.8mm
- DAC Channels :
- No
- Packaging :
- Tape and Reel (TR)
- Supply Voltage-Max (Vsup) :
- 5.5V
- Package :
- Tape and Reel (TR);Cut Tape (CT);Digi-Reel®;
- Brand :
- Microchip Technology
- Memory Size :
- 7kB
- Data Converter :
- A/D 8x10b
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Width :
- 10 mm
- PWM Channels :
- yes
- Product :
- MCU
- MSL :
- MSL 3 - 168 hours
- Program Memory Size :
- 64KB 32K x 16
- JESD-30 Code :
- S-PQFP-G44
- Package / Case :
- 44-TQFP
- Surface Mount :
- yes
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Factory Lead Time :
- 7 Weeks
- Oscillator Type :
- Internal
- RAM Size :
- 4K x 8
- Number of Terminations :
- 44
- Max Frequency :
- 20 MHz
- Datasheets
- ATMEGA644P-20AQR

Microcontrollers Microchip Technology ATMEGA644P-20AQR Overview
The ATMEGA644P-20AQR by Microchip Technology is a robust microcontroller unit (MCU) designed to cater to the demanding needs of embedded systems. Ideal for applications requiring a compact, yet powerful MCU, the ATMEGA644P-20AQR offers a perfect blend of performance, power efficiency, and advanced features. Built on an 8-bit architecture, this microcontroller integrates 64KB of in-system programmable flash memory, providing ample space for application code and data storage. The 44-TQFP package ensures a minimal footprint while allowing for scalable integration into various designs, making it a versatile choice for developers and engineers.
ATMEGA644P-20AQR Features
The ATMEGA644P-20AQR is packed with features that enhance its functionality and usability in complex electronic environments. It supports a wide range of operating voltages from 1.8V to 5.5V, making it suitable for various power supply scenarios. The device includes 32 general-purpose I/O lines, dual 8-bit timer/counters, a 16-bit timer/counter, and multiple communication interfaces including USART, SPI, and TWI (I2C compatible). Additionally, it features a 10-bit Analog-to-Digital Converter (ADC) with 8 channels, enhancing its capability to interact with analog sensors and inputs.
ATMEGA644P-20AQR Applications
- Industrial Control Systems: Utilizes its robust I/O capabilities and multiple timer/counters for managing and monitoring automated processes.
- Consumer Electronics: Supports advanced user interfaces and connectivity for devices such as smart home gadgets and personal health monitors.
- Automotive Applications: Employs its enhanced features in dashboard electronics, entertainment systems, and diagnostic tools.
- Utility Metering: Leverages ADC and communication interfaces to read sensor data and communicate with central systems in smart meter setups.
- Building Automation: Integrates easily into systems that manage HVAC, lighting, and security, enhancing energy efficiency and system reliability.
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