{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"AT32UC3L0256-AUT","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"AT32UC3L0256-AUT","canonicalUrl":"https://icboms.com/microchip/AT32UC3L0256-AUT","factsUrl":"https://icboms.com/api/mcp/products/AT32UC3L0256-AUT","rawCanonicalId":null},"summary":{"shortDescription":"Microchip AVR®32 UC3 L series, AT32UC3L0256-AUT, 32-bit AVR core MCU, 50 MHz, 256 KB Flash, 32 KB RAM, 48-TQFP, -40°C to 85°C, 1.62 V to 3.6 V.","salesMarkdown":"## 32-bit AVR with 50 MHz — where the cycle budget lands The AT32UC3L0256-AUT is a 32-bit AVR single-core microcontroller from Microchip's AVR®32 UC3 L series, running at 50 MHz with 256 KB of on-chip Flash and 32 KB of RAM. It is housed in a 48-TQFP package (7x7 mm) and targets embedded control applications that need a deterministic 32-bit pipeline without the peripheral overhead of a Cortex-M class part. The 50 MHz clock delivers roughly 50 MIPS in single-cycle execution — a 25% speed margin over the 40 MHz PIC32MX130 peer, which matters for tight control loops or software UART bit-banging. ## Memory sizing and peripheral set for control apps 256 KB Flash (256K x 8) and 32 KB RAM (32K x 8) are enough for a modest RTOS, a TCP/IP stack, and a few hundred lines of application code — typical for motor control, sensor fusion, or human-machine interface panels. The 36 general-purpose I/O lines, plus I²C, SPI, and UART/USART connectivity, cover most sensor and actuator interfaces without external expanders. On-chip peripherals include brown-out detect, POR, DMA, PWM, and WDT — the DMA engine offloads the core for periodic ADC reads or serial data transfers, preserving CPU cycles for the main loop. ## Supply range and temperature grade — industrial fit The supply range of 1.62 V to 3.6 V covers both 1.8 V and 3.3 V logic rails, simplifying dual-voltage designs. ## Lifecycle and sourcing posture It is ROHS3 compliant.","metaTitle":"AT32UC3L0256-AUT AVR32 MCU, 50 MHz, 256 KB Flash, 48-TQFP","metaDescription":"AT32UC3L0256-AUT 32-bit AVR32 MCU with 50 MHz core, 256 KB Flash, 32 KB RAM, industrial temp -40°C to 85°C. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":"AVR®32 UC3 L","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"50MHz","Series":"AVR®32 UC3 L","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"36","Core Processor":"AVR","Package / Case":"48-TQFP","Data Converters":"A/D 8x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-TQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.62V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.63","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.63000","currency":"USD"},{"qty":25,"price":"$9.64840","currency":"USD"},{"qty":100,"price":"$8.76000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ca7878fc6996ad079394eaa36776f2dc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What are the alternatives to the AT32UC3L0256-AUT?","answer":"The PIC32MX130F128L-I/PT (40 MHz, 128 KB Flash, 48-TQFP) is a 32-bit MIPS-core alternative with similar peripheral set but lower speed and half the Flash. The PIC24FJ256GA106-I/MR (16-bit, 32 MHz, 256 KB Flash) is a 16-bit alternative with the same Flash density but a different core architecture. Neither is a drop-in replacement — verify pin compatibility and software porting effort before switching."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/AT32UC3L0256-AUT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/AT32UC3L0256-AUT when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}