ATMEGA644P-20AU
- Mfr.Part #
- ATMEGA644P-20AU
- Manufacturer
- Microchip Technology
- Package / Case
- 44-TQFP
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 44TQFP
- Stock
- 2,741
- In Stock :
- 2,741
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- ROM (words) :
- 32768
- Data Converter :
- A/D 8x10b
- Interface Type :
- 2-Wire, SPI, UART
- Supply Voltage-Min (Vsup) :
- 4.5V
- RoHS Status :
- ROHS3 Compliant
- RAM (bytes) :
- 4096
- Schedule B :
- 8542310000
- Terminal Finish :
- Matte Tin (Sn)
- DAC Channels :
- No
- Number of Terminals :
- 44
- Supply Voltage :
- 5V
- Number of I2C Channels :
- 1
- Qualification Status :
- Not Qualified
- Peak Reflow Temperature (Cel) :
- 260
- Min Operating Temperature :
- -40 °C
- Qualification :
- -
- Min Supply Voltage :
- 2.7 V
- Seated Height-Max :
- 1.2 mm
- Time@Peak Reflow Temperature-Max (s) :
- 40
- Device Core :
- AVR
- Supplier Device Package :
- 44-TQFP (10x10)
- Has ADC :
- yes
- Memory Type :
- EEPROM, FLASH
- Maximum Operating Temperature :
- +85 °C
- Package Type :
- TQFP
- Connectivity :
- I2C, SPI, UART/USART
- Watchdog Timer :
- yes
- Factory Lead Time :
- 7 Weeks
- JESD-609 Code :
- e3
- Family Name :
- ATMEGA
- Supply Current-Max :
- 9 mA
- Program Memory Type :
- Flash
- Product :
- MCU
- Max Supply Voltage :
- 5.5 V
- Surface Mount :
- yes
- Address Bus Width :
- 8B
- Operating Temperature :
- -40°C~85°C TA
- Tradename :
- AVR
- Pin Count :
- 44
- RAM Size :
- 4K x 8
- EEPROM Size :
- 2K x 8
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Memory Size :
- 64KB
- Published :
- 1997
- Density :
- 512 kb
- Data Bus Width :
- 8B
- Temperature Grade :
- Industrial
- Supply Voltage-Max (Vsup) :
- 5.5V
- ROM Programmability :
- Flash
- Series :
- AVR® ATmega
- Power Supplies :
- 3/5 V
- Pbfree Code :
- yes
- Radiation Hardening :
- No
- Number of Pins :
- 44
- Product Type :
- 8-bit Microcontrollers - MCU
- Package / Case :
- 44-TQFP
- Number of I/O Lines :
- 32
- Number of ADC Channels :
- 8
- Length :
- 10.1mm
- Package Shape :
- Square
- Interface :
- 2-Wire, I2C, SPI, UART, USART
- Additional Feature :
- IT ALSO OPERATES AT 10 MHZ WITH THE 2.7 V
- Number of SPI Channels :
- 1
- Data Converters :
- A/D 8x10b
- Mounting Style :
- SMD/SMT
- Reach Compliance Code :
- Compliant
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Base Part Number :
- ATMEGA644P
- DMA Channels :
- No
- Packaging :
- Tray
- Interfaces :
- I2C, SPI, UART
- REACH SVHC :
- No SVHC
- Number of I/Os :
- 32 I/O
- Terminal Pitch :
- 0.8 mm
- PWM Channels :
- yes
- Core Processor :
- AVR
- Minimum Operating Temperature :
- -40 °C
- Moisture Sensitivity Level (MSL) :
- 3 (168 Hours)
- Number of I/O :
- 32
- CPU Family :
- AVR RISC
- Typical Operating Supply Voltage :
- 2.7 → 5.5 V
- Terminal Form :
- Gull wing
- Number of Bits :
- 8
- Speed :
- 20MHz
- Base Product Number :
- ATMEGA644
- Brand :
- Microchip Technology / Atmel
- Max Operating Temperature :
- 85 °C
- Product Status :
- Active
- Max Frequency :
- 20 MHz
- MSL :
- MSL 3 - 168 hours
- Core Architecture :
- AVR
- Terminal Position :
- QUAD
- Instruction Set Architecture :
- RISC
- Manufacturer :
- Microchip
- JESD-30 Code :
- S-PQFP-G44
- Package :
- Tray
- Height :
- 1.05mm
- RoHS :
- Details
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Number of PWM Channels :
- 6
- Frequency :
- 20MHz
- Program Memory Size :
- 64KB 32K x 16
- Access Time :
- 20 μs
- Oscillator Type :
- Internal
- Bit Size :
- 8
- Core Size :
- 8-Bit
- Mounting Type :
- Surface Mount
- Mount :
- Surface Mount
- Width :
- 10.1mm
- Contact Plating :
- Tin
- Number of Programmable I/O :
- 32
- Lead Free :
- Lead Free
- Number of Terminations :
- 44
- Number of Timers/Counters :
- 3
- Product Category :
- 8-bit Microcontrollers - MCU
- Dimensions :
- 10.1 x 10.1 x 1.05mm
- Datasheets
- ATMEGA644P-20AU

Microcontrollers Microchip Technology ATMEGA644P-20AU Overview
The Microcontrollers Microchip Technology ATMEGA644P-20AU is a highly versatile and powerful 8-bit microcontroller unit (MCU) designed for embedded applications requiring a mix of power efficiency, performance, and expansive I/O options. Manufactured by Microchip Technology, this MCU operates at a frequency of up to 20 MHz and is housed in a compact 44-pin TQFP package. Its 64KB of flash memory ensures ample space for complex programs, while additional features like EEPROM and SRAM enhance its utility in various applications. This microcontroller is perfect for developers looking for a robust platform to build sophisticated systems in commercial and industrial environments.
ATMEGA644P-20AU Features
The ATMEGA644P-20AU boasts several key features making it ideal for demanding applications. It includes 64KB of ISP flash memory, 2KB of EEPROM, and 4KB of SRAM, supporting extensive data handling and storage capabilities. The MCU offers multiple programmable serial USARTs, a 10-bit ADC with 8 channels, and dual programmable 16-bit timers, facilitating precise control and versatile connectivity options. Enhanced power-saving modes ensure efficient operation, minimizing energy consumption when idle or in low-power tasks.
ATMEGA644P-20AU Applications
- Industrial Control Systems: The ATMEGA644P-20AU can be used to manage automation processes, thanks to its robust I/O capabilities and real-time performance, ensuring reliable system responses in manufacturing environments.
- Consumer Electronics: This MCU is ideal for powering consumer gadgets such as smart home devices or interactive toys, providing the necessary processing power and connectivity options to handle complex user interactions and connectivity with other devices.
- Automotive Applications: Employed in vehicle systems for monitoring and control functions, the ATMEGA644P-20AU supports stringent automotive standards for reliability and durability under various conditions.
- Medical Devices: Its precision and low power consumption make it suitable for medical monitoring equipment, where long-term reliability and accuracy are critical.
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