ATMEGA644-20AU
- Mfr.Part #
- ATMEGA644-20AU
- Manufacturer
- Microchip Technology
- Package / Case
- 44-TQFP
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 44TQFP
- Stock
- 15,098
- In Stock :
- 15,098
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Typical Operating Supply Voltage :
- 5.5 (Maximum) V
- Pin Count :
- 44
- MSL :
- MSL 3 - 168 hours
- Temperature Grade :
- Industrial
- Interface Type :
- I2C, SPI, USART
- Flash Memory :
- 64
- Qualification Status :
- Not Qualified
- Surface Mount :
- yes
- Memory Type :
- Flash
- Watchdog Timer :
- yes
- Number of SPI Channels :
- 1
- DMA Channels :
- No
- Data Converter :
- A/D 8x10b
- Number of ADC Channels :
- 8
- Supply Voltage :
- 5V
- Lead Free :
- Lead Free
- Package Shape :
- Square
- Family Name :
- ATMEGA
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Max Frequency :
- 20 MHz
- Qualification :
- -
- Height :
- 1mm
- Supplier Device Package :
- 44-TQFP (10x10)
- Package :
- Tray
- Terminal Pitch :
- 0.8 mm
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Product Status :
- Active
- Package / Case :
- 44-TQFP
- ROM Programmability :
- Flash
- Number of Timers/Counters :
- 3
- Number of Pins :
- 44
- Number of Inputs :
- 32
- Power Supplies :
- 3/5 V
- Mounting Style :
- SMD/SMT
- Number of UART Channels :
- 1
- Additional Feature :
- ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Interface :
- 2-Wire, I2C, SPI, UART, USART
- Product :
- MCU
- Access Time :
- 20 μs
- Supply Current-Max :
- 9 mA
- Core Processor :
- AVR
- Number of PWM Channels :
- 6
- Can :
- 0
- PWM Channels :
- yes
- HTS Code :
- 8542.31.00.01
- Product Category :
- 8-bit Microcontrollers - MCU
- Core Architecture :
- AVR
- ECCN Code :
- EAR99
- Base Part Number :
- ATMEGA644
- Oscillator Type :
- Internal
- Clock Speed :
- 20
- Length :
- 10mm
- Maximum Operating Temperature :
- +85 °C
- RoHS :
- Compliant
- Brand :
- Microchip Technology / Atmel
- Terminal Position :
- QUAD
- Max. operating temperature :
- +85°C
- Packaging :
- Tray
- Memory Size :
- 64KB
- Manuf. code :
- MCP
- RAM (bytes) :
- 4096
- Interfaces :
- JTAG/SPI/TWI/USART
- Series :
- AVR® ATmega
- Min Operating Temperature :
- -40 °C
- Instruction Set Architecture :
- RISC
- Has ADC :
- yes
- Number of I/O :
- 32
- Number of I/Os :
- 32
- On Chip Program ROM Width :
- 16
- Number of Terminations :
- 44
- Reach Compliance Code :
- Unknown
- Number of I2C Channels :
- 1
- Supply Voltage-Max (Vsup) :
- 5.5V
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Contact Plating :
- Tin
- DAC Resolution :
- -
- Data Converters :
- A/D 8x10b
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- EEPROM Size :
- 2K x 8
- Device Core :
- AVR
- Max Operating Temperature :
- 85 °C
- Radiation Hardening :
- No
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Max Supply Voltage :
- 5.5 V
- Number of Terminals :
- 44
- Enclosure :
- TQFP 44 (10x10)
- RoHS Status :
- ROHS3 Compliant
- Connectivity :
- I2C, SPI, UART/USART
- Width :
- 10mm
- Terminal Form :
- Gull wing
- Schedule B :
- 8542310000, 8542310000/8542310000, 8542310000/8542310000/8542310000, 8542310000/8542310000/8542310000/8542310000
- Product Type :
- 8-bit Microcontrollers - MCU
- Program Memory Size :
- 64KB 32K x 16
- Bit Size :
- 8
- Pbfree Code :
- yes
- Mount :
- Surface Mount
- Data Bus Width :
- 8B
- Adc Resolution :
- 10
- Terminal Finish :
- Matte Tin (Sn)
- JESD-30 Code :
- S-PQFP-G44
- Min Supply Voltage :
- 2.7 V
- Published :
- 1997
- Operating Temperature :
- -40°C~85°C TA
- CPU Family :
- AVR RISC
- Number of Bits :
- 8
- Supply Voltage-Min (Vsup) :
- 4.5V
- Tradename :
- AVR
- ROM (words) :
- 32768
- DAC Channels :
- No
- Program Memory Type :
- Flash
- Number of Outputs :
- 32
- Adc Channels :
- 8
- Number of Programmable I/O :
- 32
- JESD-609 Code :
- e3
- Base Product Number :
- ATMEGA644
- Peak Reflow Temperature (Cel) :
- 260
- Manufacturer :
- Microchip Technology
- Frequency :
- 20MHz
- Speed :
- 20MHz
- REACH SVHC :
- No SVHC
- Dimensions :
- 10.1 x 10.1 x 1.05mm
- Core Size :
- 8-Bit
- Density :
- 512 kb
- Mounting Type :
- Surface Mount
- Type :
- ATMEGA644-20AU
- Seated Height-Max :
- 1.2 mm
- Minimum Operating Temperature :
- -40 °C
- RAM Size :
- 4K x 8
- Number of I/O Lines :
- 32
- Factory Lead Time :
- 7 Weeks
- Package Type :
- TQFP
- Datasheets
- ATMEGA644-20AU

Microcontrollers Microchip Technology ATMEGA644-20AU Overview
The Microcontrollers Microchip Technology ATMEGA644-20AU is a high-performance, low-power AVR® 8-bit microcontroller that combines 64KB ISP flash memory with read-while-write capabilities, 2KB EEPROM, and 4KB SRAM. This robust microcontroller offers a versatile set of features enabling highly efficient handling of complex applications ranging from advanced consumer electronics to sophisticated industrial machinery. The integration of a 10-bit A/D converter, real-time counter, two 8-bit and two 16-bit timers, along with multiple PWM channels, enhances its adaptability to a variety of tasks. Engineered for efficiency and scalability, the ATMEGA644-20AU from Microchip Technology is an excellent choice for developers looking to push the boundaries of microcontroller applications.
ATMEGA644-20AU Features
- High-performance AVR 8-bit microcontroller
- 64KB of in-system programmable flash
- 2KB EEPROM, 4KB SRAM
- 32 programmable I/O lines
- Multiple PWM channels
- Two 8-bit timers, two 16-bit timers
- 8-channel, 10-bit analog-to-digital converter
- Up to 20 MHz operating frequency
ATMEGA644-20AU Applications
- Consumer Electronics: Used in advanced personal devices such as multimedia players and gaming devices where processing speed and power efficiency are critical.
- Industrial Control Systems: Powers complex machinery controls, including temperature and motion sensors, ensuring precise management and operational safety.
- Automotive Applications: Integral in dashboard electronics and sensor monitoring systems, enhancing vehicle efficiency and safety.
- Utility Monitoring Systems: Employed in devices for monitoring utility meters and energy consumption, facilitating accurate data collection and analysis.
- Healthcare Devices: Supports the operation of medical monitoring devices that require high reliability and accuracy for critical health care applications.
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