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Microchip Technology ATXMEGA256D3-MHR Microcontrollers

IC MCU 8/16BIT 256KB FLASH 64QFN

540 ActiveMicrochip TechnologyATXMEGA256D64-VFQFN Exposed Pad$18.65
ATXMEGA256D3-MHR 64-VFQFN Exposed Pad package illustration

Same model may have multiple batches, images only for reference.

ATXMEGA256D3-MHR
Part Number (MPN)
ATXMEGA256D3-MHR
Base Model
Detailed Description
IC MCU 8/16BIT 256KB FLASH 64QFN
Package
64-VFQFN Exposed Pad
Lifecycle Status
Active
Datasheet
PDF ATXMEGA256D3-MHR Datasheet
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Ordering Code Family

ATXMEGA256D groups multiple orderable suffixes under one base device. Compare package, grade, and reel options on the base-number page before substituting within the family.

2 ordering variants listed on the family page.

View all variants

Technical Specifications

Microchip Technology ATXMEGA256D3-MHR Microcontrollers technical specifications.

General

Interface
I2C, IrDA, LIN, SPI, UART, USART
Memory Size
128 kB
RAM Size
16K x 8
Data Bus Width
8 b
RoHS
Yes
Number of Pins
64
Package / Case
64-VFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.6V ~ 3.6V

Alternate Parts Comparison (ATXMEGA256D3-MHR vs ATXMEGA256D3-MN vs ATXMEGA256D3-ANR vs ATXMEGA256D3-MNR)

Side-by-side technical parameter comparison of related primary models in this product family.

This PartAlternate PartsAlternate PartsAlternate Parts
Package / Case64-VFQFN Exposed Pad64-VFQFN Exposed Pad64-TQFP64-VFQFN Exposed Pad
Mounting TypeSurface MountSurface MountSurface MountSurface Mount
Operating Temperature-40°C ~ 85°C (TA)-40°C ~ 105°C (TA)-40°C ~ 105°C (TA)-40°C ~ 105°C (TA)
Supply Voltage1.6V ~ 3.6V1.6V ~ 3.6V1.6V ~ 3.6V1.6V ~ 3.6V
Core ProcessorAVRAVRAVRAVR
Core Size8/16-Bit8/16-Bit8/16-Bit8/16-Bit
RAM Size16K x 816K x 816K x 816K x 8
ConnectivityI²C, IrDA, SPI, UART/USARTI²C, IrDA, SPI, UART/USARTI²C, IrDA, SPI, UART/USARTI²C, IrDA, SPI, UART/USART
Data ConvertersA/D 16x12bA/D 16x12bA/D 16x12bA/D 16x12b
EEPROM Size4K x 84K x 84K x 84K x 8
Number of I/O50505050
Oscillator TypeInternalInternalInternalInternal
Action

Cross Reference

Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .

Suggested replacements

More Parts in Microcontrollers

Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.