EU RoHSCompliant
ECCN (US)EAR99
Part StatusNRND
PackagingTray
MountingSurface Mount
ECCNEAR99
BrandMicrochip Technology
Mounting TypeSurface Mount
SeriesATmega644P
Minimum Operating Temperature-40 C
Maximum Operating Temperature+85 C
Width10 mm
Length10 mm
Operating Temperature-40 to 85 °C
Product Type8-bit Microcontrollers-MCU
Height1 mm
Package / CaseTQFP-44
SubcategoryMicrocontrollers-MCU
Package TypeTQFP
RoHSDetails
TradenameAVR
ProductMCUs
Pin Count44
ProgrammabilityYes
Standard Package NameQFP
Supplier PackageTQFP
PCB changed44
Lead ShapeGull-wing
Interface Type2-Wire, SPI, UART
AutomotiveNo
Maximum Operating Supply Voltage (V)5.5
Minimum Operating Supply Voltage (V)2.7
PPAPNo
Typical Operating Supply Voltage (V)3.3|5
Supplier Temperature GradeIndustrial
Factory Pack Quantity160
ManufacturerMicrochip
Part # AliasesATMEGA644P-20AU
Product Category8-bit Microcontrollers-MCU
Operating Supply Voltage2.7 V to 5.5 V
Mounting StyleSMD/SMT
Supply Voltage - Max5.5 V
Supply Voltage - Min2.7 V
Moisture SensitiveYes
Process TechnologyCMOS
Program Memory TypeFlash
RAM Size4 kB
CoreAVR
Data RAM Size4 kB
Number Of I/Os32 I/O
Program Memory Size64 kB
Pulse Width Modulation1(6 Channel)
Number of ADC Units1
Instruction Set ArchitectureRISC
Data Bus Width8 bit
Number of PWM Units1
ADC Channels8
Maximum Frequency20MHz
ADC Resolution10 bit
Device CoreAVR
Family NameATmega
Typical Operating Supply Voltage2.7 → 5.5 V
Core ArchitectureAVR
Maximum CPU Frequency (MHz)20
Maximum Clock Rate (MHz)20
Maximum Expanded Memory Size64KB
No. of Timers3
PWM6
USART2
SPI1
Watchdog1
Analog Comparators1
Maximum Clock Frequency20 MHz
Number of ADCsSingle
ADCs8x10 bit
ADC Resolution (bit)10
Data ROM Size2 kB
Processor SeriesmegaAVR
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