Microchip Technology AT32UC

AT32UC variants from Microchip Technology

Variants

Mfr

Microchip Technology

Lifecycle

Active

AT32UC Overview

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

AT32UC is a Microchip Technology order-code family — not a single orderable MPN. This page lists 33 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.

| Official Price: 6.0200 | Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L0128 Other listed variants describe: | Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L016; | Official Price: 7.0000 | Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L0256.

Suffix examples in this family: 3L0128, 3L016, 3L0256, 3L032, 3L064, 3A0128-ALUT, 3A0256-ALUT, 3A0512-ALUR. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.

Example MPNs: AT32UC3L0128, AT32UC3L016, AT32UC3L0256, AT32UC3L032, AT32UC3L064, AT32UC3A0128-ALUT.

Key Features

Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
33 distinct suffix patternsExamples: 3L0128, 3L016, 3L0256, 3L032, 3L064 (+28 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 33 AT32UC part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.

Part Number	Description	Manufacturer	Lifecycle	RoHS	Availability	Action
AT32UC3L0128	\| Official Price: 6.0200 \| Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L0128	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3L016	\| Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L016	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3L0256	\| Official Price: 7.0000 \| Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L0256	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3L032	\| Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L032	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3L064	\| Official Product URL: https://www.microchip.com/en-us/product/AT32UC3L064	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A0128-ALUT	IC MCU 32BIT 128KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A0256-ALUT	IC MCU 32BIT 256KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A0512-ALUR	IC MCU 32BIT 512KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A0512-ALUT	IC MCU 32BIT 512KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A0512-CTUT	IC MCU 32BIT 512KB FLSH 144FFBGA	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A1128-AUR	IC MCU 32BIT 128KB FLASH 100TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A1128-AUT	IC MCU 32BIT 128KB FLASH 100TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A1256-AUR	IC MCU 32BIT 256KB FLASH 100TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A1256-AUT	IC MCU 32BIT 256KB FLASH 100TQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3128-ALUT	IC MCU 32BIT 128KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3128-CTUR	IC MCU 32BIT 128KB FLSH 144TFBGA	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3128S-ALUT	IC MCU 32BIT 128KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3256-ALUR	IC MCU 32BIT 256KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3256-CTUR	IC MCU 32BIT 256KB FLSH 144FFBGA	Microchip Technology	Active	Compliant	In Stock	RFQ
AT32UC3A3256S-ALUR	IC MCU 32BIT 256KB FLASH 144LQFP	Microchip Technology	Active	Compliant	In Stock	RFQ

Ordering Code Differences

How suffixes on AT32UC map to package, grade, and reel options.

AT32UC uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.

Suffixes seen here: 3L0128, 3L016, 3L0256, 3L032, 3L064, 3A0128-ALUT, 3A0256-ALUT, 3A0512-ALUR, 3A0512-ALUT, 3A0512-CTUT (+23 more).

Full MPN examples: AT32UC3L0128, AT32UC3L016, AT32UC3L0256, AT32UC3L032, AT32UC3L064.

Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.

How to Choose the Right AT32UC Microcontrollers

📦

Match the footprint first

Pull the exact package drawing for your MPN — base-number swaps fail most often at the footprint, not the schematic.

⚡

Electrical headroom

Compare voltage and current columns in the variant table. For AT32UC, 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 "AT32UC" — include the full suffix (e.g. 3L0128, 3L016, 3L0256). RFQ with reel/tube preference and required date code.

Technical Specifications

Core parameters for AT32UC product family

Identity

Base Model

AT32UC

Manufacturer

Microchip Technology

Listed Variants

Variant Parameters

Lifecycle Status

Active

RoHS Status

Compliant

Source AT32UC with Octatronics

Request stock confirmation, lead time, date code, and pricing for all 33 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 AT32UC product family.

Is AT32UC a single part I can order, or a family prefix?

AT32UC is a base / family code from Microchip Technology. You order a full MPN such as AT32UC3L0128, AT32UC3L016, AT32UC3L0256. The variant table lists 33 orderable lines with different suffixes.

What do the suffix letters on AT32UC part numbers mean?

Listed suffix fragments include: 3L0128, 3L016, 3L0256, 3L032, 3L064, 3A0128-ALUT. Typically they encode package (see Package column), 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 AT32UC 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 AT32UC?

Full manufacturer MPN (not just AT32UC), 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.