Microchip Technology ATXMEGA256A

ATXMEGA256A variants from Microchip Technology

Variants

Mfr

Microchip Technology

Packages

64-TQFP

Lifecycle

Active

ATXMEGA256A Overview

What changes between part numbers, and what to check before you lock the BOM — Microcontrollers.

Key Features

Footprint / package: 64-TQFPSingle package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
14 distinct suffix patternsExamples: 3, 3B, 3BU, 3U, 3-AU (+9 more). Decode suffix meaning in the ordering notes under the variant table.

Target Applications

Microcontrollers — design-in and field replacement
BOM scrub where only the base prefix is known but suffix is TBD
Second-source checks when the original MPN is constrained

Ordering Variants

Compare 14 ATXMEGA256A part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Package Type	Manufacturer	Lifecycle	RoHS	Availability	Action
ATXMEGA256A3	\| Official Price: 8.5800 \| Official Product URL: https://www.microchip.com/en-us/product/ATxmega256A3	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3B	\| Official Price: 9.1800 \| Official Product URL: https://www.microchip.com/en-us/product/ATxmega256A3B	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3BU	\| Official Price: 6.4800 \| Official Product URL: https://www.microchip.com/en-us/product/ATxmega256A3BU	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3U	\| Official Price: 6.4800 \| Official Product URL: https://www.microchip.com/en-us/product/ATxmega256A3U	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3-AU	IC MCU 8/16BIT 256KB FLSH 64TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3-AUR	IC MCU 8/16BIT 256KB FLSH 64TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3-MH	IC MCU 8/16BIT 256KB FLASH 64QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3B-MH	IC MCU 8/16BIT 256KB FLASH 64QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3BU-AU	IC MCU 8/16BIT 256KB FLSH 64TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3BU-AUR	IC MCU 8/16BIT 256KB FLSH 64TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3BU-MHR	IC MCU 8/16BIT 256KB FLASH 64QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3U-AN	IC MCU 8/16BIT 256KB FLSH 64TQFP	-	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3U-ANR	Package: 64-TQFP \| Mounting Type: Surface Mount \| Operating Temperature: -40°C ~ 105°C (TA) \| Supplier Device Package: 64-TQFP (14x14) \| Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT \| Number of I O: 50	64-TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
ATXMEGA256A3U-MH	IC MCU 8/16BIT 256KB FLASH 64QFN	-	Microchip Technology	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on ATXMEGA256A map to package, grade, and reel options.

How to Choose the Right ATXMEGA256A Microcontrollers

📦

Match the footprint first

Packages here: 64-TQFP. Open the land-pattern drawing before you substitute a different suffix.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For ATXMEGA256A, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.

🌡️

Temp grade letter matters

Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.

🔢

Copy the full MPN

Do not BOM only "ATXMEGA256A" — include the full suffix (e.g. 3, 3B, 3BU). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for ATXMEGA256A product family

Identity

Base Model

ATXMEGA256A

Manufacturer

Microchip Technology

Listed Variants

Variant Parameters

Package Type

64-TQFP

Lifecycle Status

Active

RoHS Status

Compliant

Source ATXMEGA256A with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 14 ordering variants from Microchip Technology. Our team supports active, EOL, and hard-to-find component sourcing.

Original manufacturer parts with traceability options
BOM upload and multi-line RFQ support
Package, grade, and compliance verification

Request Quote View Microchip Technology Browse all base models →

Frequently Asked Questions

Common technical questions about the ATXMEGA256A product family.

Is ATXMEGA256A a single part I can order, or a family prefix?

ATXMEGA256A is a base / family code from Microchip Technology. You order a full MPN such as ATXMEGA256A3, ATXMEGA256A3B, ATXMEGA256A3BU. The variant table lists 14 orderable lines with different suffixes.

What do the suffix letters on ATXMEGA256A part numbers mean?

Listed suffix fragments include: 3, 3B, 3BU, 3U, 3-AU, 3-AUR. Typically they encode package (64-TQFP), temperature grade, and tape/reel option. Always decode on the Microchip Technology datasheet ordering guide — do not guess from pattern alone.

What is the lifecycle status of ATXMEGA256A variants?

Lifecycle values in our listing: Active. Status is per MPN suffix — one variant can be Active while another is NRND. Check PCN for your exact suffix before multi-year commitments.

What should I send for an RFQ on ATXMEGA256A?

Full manufacturer MPN (not just ATXMEGA256A), quantity, needed date code, reel vs tube, and any compliance docs (CoC, RoHS, conflict minerals). If you only know the base prefix, include a photo of the existing label or reel.