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ATMEGA644A-AU

ATMEGA644A-AU

ATMEGA644A-AU

Microchip Technology

64KB 32K x 16 FLASH AVR 8-Bit Microcontroller AVR® ATmega Series ATMEGA644A 44 Pin 20MHz 44-TQFP

SOT-23

ATMEGA644A-AU Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Factory Lead Time 7 Weeks
Lifecycle Status Production (Last Updated: 2 years ago)
Contact PlatingTin
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 44-TQFP
Surface MountYES
Number of Pins 44
Supplier Device Package 44-TQFP (10x10)
Number of Terminals 44
Mounting Style SMD/SMT
Interfaces SPI/USART
Data Converters A/D 8x10b
Family Name ATmega644A
Instruction Set Architecture RISC
Dimensions 10.1 x 10.1 x 1.05mm
Typical Operating Supply Voltage 1.8 → 5.5 V
Package Type TQFP
Maximum Operating Temperature+85 °C
Minimum Operating Temperature -40 °C
MSL MSL 3 - 168 hours
Qualification -
Number of I/Os 32 I/O
Interface Type 2-Wire, SPI, Serial, USART
Manufacturer Microchip
Brand Microchip Technology / Atmel
Tradename AVR
RoHS Details
Schedule B 8542310000
Package Tray
Base Product Number ATMEGA644
Mfr Microchip Technology
Product Status Active
Package Shape SQUARE
Number of I/O Lines 32
Operating Temperature-40°C~85°C TA
PackagingTray
Series AVR® ATmega
Published 2008
JESD-609 Code e3
Pbfree Code yes
Part StatusActive
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 44
Terminal Finish Matte Tin (Sn) - annealed
Max Operating Temperature85 °C
Min Operating Temperature -40 °C
Terminal Position QUAD
Terminal FormGULL WING
Peak Reflow Temperature (Cel) 260
Terminal Pitch0.8 mm
Reach Compliance Code compliant
Frequency 20MHz
Time@Peak Reflow Temperature-Max (s) 40
Base Part Number ATMEGA644A
Pin Count44
JESD-30 Code S-PQFP-G44
Qualification StatusNot Qualified
Supply Voltage-Max (Vsup) 5.5V
Power Supplies2/5V
Temperature GradeINDUSTRIAL
Interface I2C, SPI, UART, USART
Max Supply Voltage5.5 V
Min Supply Voltage1.8 V
Memory Size64kB
Oscillator TypeInternal
Number of I/O 32
Speed 20MHz
RAM Size 4K x 8
Memory TypeFLASH
Voltage - Supply (Vcc/Vdd) 1.8V~5.5V
uPs/uCs/Peripheral ICs Type MICROCONTROLLER, RISC
Core Processor AVR
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Program Memory TypeFLASH
Core Size 8-Bit
Program Memory Size 64KB 32K x 16
Connectivity I2C, SPI, UART/USART
Supply Current-Max 9 mA
Bit Size 8
Data Converter A/D 8x10b
Watchdog TimerYes
Has ADC YES
DMA Channels NO
Data Bus Width 8b
PWM Channels YES
DAC Channels NO
Seated Height-Max 1.2 mm
Number of Timers/Counters 3
Product Type8-bit Microcontrollers - MCU
ROM (words) 32768
Core Architecture AVR
EEPROM Size 2K x 8
On Chip Program ROM Width 16
CPU Family AVR RISC
Max Frequency 20 MHz
Boundary Scan YES
Low Power Mode YES
Number of Programmable I/O 32
Format FIXED-POINT
Integrated Cache NO
RAM (words) 4096
RAM (bytes) 4096
Number of ADC Channels 8
Number of Serial I/Os 2
Number of Timers 3
ROM Programmability FLASH
Number of External Interrupts 3
Number of PWM Channels 6
Number of I2C Channels 1
On Chip Data RAM Width 8
Number of SPI Channels 1
Product MCU
Product Category8-bit Microcontrollers - MCU
Device CoreAVR
Height 1.05mm
Length 10mm
Width 10mm
REACH SVHC No SVHC
Radiation HardeningNo
RoHS StatusROHS3 Compliant
Lead Free Lead Free
In-Stock:1440 items

Pricing & Ordering

QuantityUnit PriceExt. Price
1$5.95000$5.95
500$5.8905$2945.25
1000$5.831$5831
1500$5.7715$8657.25
2000$5.712$11424
2500$5.6525$14131.25

ATMEGA644A-AU Product Details

ATMEGA644A-AU Overview


Packaged in a 44-TQFP format. A total of 32 I/Os are on the Microcontroller. Surface Mount is the mounting type of the Microcontroller that is attached to the panel. This Microcontroller is based on a core called 8-Bit. The type of its program memory is FLASH. In this Microcontroller, temperature is controlled within the range -40°C~85°C TA. A AVR® ATmega series electrical component is used in this application. This program has a program memory of 64KB 32K x 16 bytes, which is the size of the program. With a AVR Core Processor, Microcontroller is fast and efficient. ICs for MICROCONTROLLER, RISC uPs/uCs/peripheral parts. There are 44 terminations on the IC chip, which means there are 44 terminations on the integrated circuit chip. In addition, MCU chip comes with a 8-bit size. The system has NO channels for DMA communication. There is 64kB memory size assigned to the part. Alternatives can be found by searching through the base part number ATMEGA644A to find them. At a frequency of 20MHz, Microcontroller can operate efficiently. This MCU Chip uses YES PWM channels to operate. Chips have 44 pins. There are 3 timers/counters in this device. In total, it has 44 pins. The AVR RISC CPU family is embedded in the device, so it can handle a wide range of operations. The equipment has a FLASH memory that is built in. It is equipped with a AVR core architecture which is integrated into it. In the 32 Programmable I/O section, it can be programmed in many different ways. It consists of 8 channels in total for the ADC. This device uses 6 PWM channels to generate the voltage. 1 channels of I2C have been incorporated into the design of the part. As part of the part, 2 serial I/Os have been incorporated. In addition to the internal interrupts, the part includes 3 external interrupts. An integrated circuit with 3 bits has a total of 3 bits.

ATMEGA644A-AU Features


44-TQFP package
Mounting type of Surface Mount
Minimum temperature of -40 °C


ATMEGA644A-AU Applications


There are a lot of Microchip Technology
ATMEGA644A-AU Microcontroller applications.


  • Radio
  • Television
  • Heater/Fan
  • Calculator
  • Kindle
  • Christmas lights
  • 3D printers
  • Washing machine
  • Microwave ovens
  • Home appliances

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