ATmega256x 8-bit Microcontrollers

Microchip Technology ATmega256x 8-bit Microcontrollers provide a highly flexible and cost-effective solution to many embedded control applications. The ATmega256x 8-bit Microcontrollers AVR architecture supports a full suite of program and system development tools, including C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits.

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Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Core
Program Memory Size
Data RAM Size
Package / Case
Maximum Clock Frequency
ADC Resolution
Number of I/Os
Supply Voltage - Min
Supply Voltage - Max
Mounting Style
Data Bus Width
Minimum Operating Temperature
Maximum Operating Temperature
Series
Packaging
Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLSH 4K EE 8K SRAM ADC 5V-8MHz
Datasheet
1,710In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

AVR 256 kB 8 kB TQFP-64 8 MHz 10 bit 54 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Reel, Cut Tape, MouseReel

Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLASH 4K EE 8K SRAM ADC 1.8V
Datasheet
696In Stock
Min.: 1
Mult.: 1

AVR 256 kB 8 kB MLF-64 8 MHz 10 bit 54 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Tray

Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLASH 4K EE 8K SRAM ADC 5V
Datasheet
41In Stock
Min.: 1
Mult.: 1

AVR 256 kB 8 kB MLF-64 16 MHz 10 bit 54 I/O 4.5 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Tray
Microchip Technology 8-bit Microcontrollers - MCU 256kB Flash 4kB EEPROM 54 I/O Pins
Datasheet
1,462On Order
Min.: 1
Mult.: 1

AVR 256 kB 8 kB TQFP-64 16 MHz 10 bit 54 I/O 4.5 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Tray
Microchip Technology 8-bit Microcontrollers - MCU 256kB Flash 4kB EEPROM 54 I/O Pins
Datasheet
1,256Expected 2026-11-19
Min.: 1
Mult.: 1

AVR 256 kB 8 kB TQFP-64 8 MHz 10 bit 54 I/O 1.8 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Tray
Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLSH 4K EE 8K SRAM ADC 5V-16MHz
Datasheet
1,000Expected 2027-04-06
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

AVR 256 kB 8 kB TQFP-64 16 MHz 10 bit 54 I/O 4.5 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Reel, Cut Tape, MouseReel
Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLSH 4K EE 8K SRAM ADC 5V-16MHz
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

AVR VQFN-64 16 MHz 4.5 V 5.5 V SMD/SMT 8 bit ATmega256x Reel
Microchip Technology 8-bit Microcontrollers - MCU AVR 256K FLSH4K EE 8K SRAM ADC1.8V-8MHz
Datasheet
Non-Stocked Lead-Time 21 Weeks
Min.: 4,000
Mult.: 4,000
: 4,000

AVR VQFN-64 8 MHz 1.8 V 5.5 V SMD/SMT 8 bit ATmega256x Reel
Microchip Technology 8-bit Microcontrollers - MCU 256kB Flash 4kB EEPROM 86 I/O Pins
Datasheet
Non-Stocked Lead-Time 36 Weeks

AVR 256 kB 8 kB TQFP-100 16 MHz 10 bit 86 I/O 4.5 V 5.5 V SMD/SMT 8 bit - 40 C + 85 C ATmega256x Tray