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

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.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















