ATMEGA644-20PU
- Mfr.Part #
- ATMEGA644-20PU
- Manufacturer
- Microchip Technology
- Package / Case
- 40-DIP (0.600, 15.24mm)
- Datasheet
- Download
- Description
- IC MCU 8BIT 64KB FLASH 40DIP
- Stock
- 117
- In Stock :
- 117
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- Manufacturer :
- Microchip Technology
- Product Category :
- Microcontrollers
- Number of Programmable I/O :
- 32
- Supplier Device Package :
- 40-PDIP
- Operating Temperature :
- -40°C~85°C TA
- Frequency :
- 20MHz
- Lead Free :
- Lead Free
- PWM Channels :
- yes
- Terminal Position :
- Dual
- Qualification :
- -
- Memory Type :
- Flash
- Oscillator Type :
- Internal
- Package / Case :
- 40-DIP (0.600, 15.24mm)
- Data Converter :
- A/D 8x10b
- Min Supply Voltage :
- 2.7 V
- Peak Reflow Temperature (Cel) :
- Not Applicable
- Base Part Number :
- ATMEGA644
- Number of I2C Channels :
- 1
- MSL :
- -
- Packaging :
- Tube
- Interface :
- 2-Wire, I2C, SPI, UART, USART
- Product Type :
- 8-bit Microcontrollers - MCU
- Data Bus Width :
- 8B
- Core Size :
- 8-Bit
- Max Supply Voltage :
- 5.5 V
- EEPROM Size :
- 2K x 8
- Supply Voltage :
- 5V
- Terminal Finish :
- Matte Tin (Sn)
- Dimensions :
- 52.57 x 13.97 x 4.44mm
- Max Frequency :
- 20 MHz
- Pbfree Code :
- yes
- Base Product Number :
- ATMEGA644
- Moisture Sensitivity Level (MSL) :
- Not Applicable
- Number of Terminals :
- 40
- RoHS Status :
- ROHS3 Compliant
- Additional Feature :
- ALSO OPERATES AT 2.7V SUPPLY AT 10 MHZ
- REACH SVHC :
- No SVHC
- Number of I/Os :
- 32 I/O
- Mounting Type :
- Through Hole
- Number of ADC Channels :
- 8
- Typical Operating Supply Voltage :
- 2.7 → 5.5 V
- JESD-30 Code :
- R-PDIP-T40
- Maximum Operating Temperature :
- +85 °C
- Factory Lead Time :
- 12 Weeks
- uPs/uCs/Peripheral ICs Type :
- MICROCONTROLLER, RISC
- Published :
- 1997
- Contact Plating :
- Tin
- Package Type :
- PDIP
- Interface Type :
- I2C, SPI, USART
- Brand :
- Microchip Technology / Atmel
- Voltage - Supply (Vcc/Vdd) :
- 2.7V~5.5V
- Family Name :
- ATMEGA
- Reach Compliance Code :
- Compliant
- Supply Voltage-Min (Vsup) :
- 4.5V
- Terminal Form :
- THROUGH-HOLE
- Watchdog Timer :
- yes
- Number of Timers/Counters :
- 3
- Length :
- 52.58mm
- Program Memory Size :
- 64KB 32K x 16
- Supply Voltage-Max (Vsup) :
- 5.5V
- Pin Count :
- 40
- Mount :
- Through Hole
- Device Core :
- AVR
- Core Architecture :
- AVR
- Core Processor :
- AVR
- ROM Programmability :
- Flash
- Max Operating Temperature :
- 85 °C
- Supply Current-Max :
- 9 mA
- RAM Size :
- 4K x 8
- RAM (bytes) :
- 4096
- Access Time :
- 20 μs
- DMA Channels :
- No
- Series :
- AVR® ATmega
- Program Memory Type :
- Flash
- Height :
- 4.826mm
- Manufacturer :
- Microchip
- Product Status :
- Active
- Bit Size :
- 8
- Seated Height-Max :
- 4.826 mm
- CPU Family :
- AVR RISC
- Temperature Grade :
- Industrial
- Min Operating Temperature :
- -40 °C
- Data Converters :
- A/D 8x10b
- Connectivity :
- I2C, SPI, UART/USART
- Qualification Status :
- Not Qualified
- Number of Pins :
- 40
- Width :
- 13.97mm
- Mounting Style :
- Through Hole
- DAC Resolution :
- -
- Package :
- Tube
- RoHS :
- Details
- Instruction Set Architecture :
- RISC
- Number of PWM Channels :
- 6
- Minimum Operating Temperature :
- -40 °C
- Number of I/O Lines :
- 32
- Lifecycle Status :
- Production (Last Updated: 2 years ago)
- Number of SPI Channels :
- 1
- Tradename :
- AVR
- Product :
- MCU
- ROM (words) :
- 32768
- Number of I/O :
- 32
- Memory Size :
- 64KB
- Schedule B :
- 8542310000
- Peripherals :
- Brown-out Detect/Reset, POR, PWM, WDT
- Radiation Hardening :
- No
- Interfaces :
- SPI/USART
- Product Category :
- 8-bit Microcontrollers - MCU
- Package Shape :
- RECTANGULAR
- Power Supplies :
- 3/5 V
- Has ADC :
- yes
- Surface Mount :
- No
- JESD-609 Code :
- e3
- Speed :
- 20MHz
- Number of Terminations :
- 40
- Terminal Pitch :
- 2.54mm
- DAC Channels :
- No
- Datasheets
- ATMEGA644-20PU

Microcontrollers Microchip Technology ATMEGA644-20PU Overview
The Microcontrollers Microchip Technology ATMEGA644-20PU is a highly versatile 8-bit microcontroller from Microchip Technology, designed to meet the rigorous demands of modern embedded systems. This MCU is built on an advanced AVR architecture, enabling sophisticated system management and enhanced device performance with a 64KB flash memory. Ideal for applications requiring high-level code execution and data processing within a compact footprint, the ATMEGA644-20PU offers a balanced combination of performance, power efficiency, and programming flexibility, making it a top choice for industry professionals.
ATMEGA644-20PU Features
The ATMEGA644-20PU microcontroller boasts a wide array of features suitable for robust electronic designs. Key features include 64KB of in-system programmable flash, 2KB SRAM, 1KB EEPROM, and a clock speed of up to 20MHz. Additionally, it supports multiple communication protocols such as SPI, UART, and I2C, making it highly adaptable to various communication requirements. It also includes 32 programmable I/O lines, 8-channel 10-bit A/D converter, and multiple power-saving modes, which are crucial for low-power applications.
ATMEGA644-20PU Applications
- Home Automation Systems: Used in controlling lighting, HVAC, and security systems within smart homes through its robust I/O capabilities and flexible communication interfaces.
- Industrial Control: Drives complex machinery and processes in industrial settings, thanks to its extensive memory and robust processing power.
- Medical Devices: Empowers critical medical device operations such as monitoring systems and small-scale medical imaging, by providing reliable data handling and real-time processing abilities.
- Automotive: Suitable for automotive applications such as dashboard controllers and diagnostic systems where reliability and real-time performance are paramount.
- Consumer Electronics: Powers consumer electronics, including handheld devices, gaming consoles, and advanced wearables, leveraging its high-speed processing and low power consumption.
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