Skip to main content

Microchip Technology ATUC256L3U-AUT Microcontrollers

IC MCU 32BIT 256KB FLASH 64TQFP

4,400 ActiveMicrochip TechnologyATUC256L64-TQFP$23.93
ATUC256L3U-AUT 64-TQFP package illustration

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

ATUC256L3U-AUT
Part Number (MPN)
ATUC256L3U-AUT
Base Model
Detailed Description
IC MCU 32BIT 256KB FLASH 64TQFP
Package
64-TQFP
Key Features
Package: 64-TQFP
Lifecycle Status
Active
Datasheet
PDF ATUC256L3U-AUT Datasheet
Quick Jump:
Ready to order?In stock and ready to ship.
Competitive Pricing
Fast & Reliable Delivery
Quality Assured

Ordering Code Family

ATUC256L groups multiple orderable suffixes under one base device. Compare package, grade, and reel options on the base-number page before substituting within the family.

6 ordering variants listed on the family page.

View all variants

Technical Specifications

Microchip Technology ATUC256L3U-AUT Microcontrollers technical specifications.

General

RAM Size
32K x 8
RoHS
Yes
Package / Case
64-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
1.62V ~ 3.6V
Lifecycle Status
Active
Package
64-TQFP
Peripherals
Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O
51

Alternate Parts Comparison (ATUC256L3U-AUT vs ATUC256L3U vs ATUC256L4U vs ATUC256L3U-Z3UR)

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

This PartAlternate PartsAlternate PartsAlternate Parts
Package / Case64-TQFP------
Mounting TypeSurface Mount------
Operating Temperature-40°C ~ 85°C (TA)------
Supply Voltage1.62V ~ 3.6V------
Core ProcessorAVR------
Core Size32-Bit Single-Core------
RAM Size32K x 8------
ConnectivityI²C, SPI, UART/USART, USB------
Data ConvertersA/D 8x12b------
Number of I/O51------
Oscillator TypeInternal------
Package64-TQFP----VQFN-64
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.