{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L431KCU6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L431KCU6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L431KCU6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L431KCU6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM Cortex-M4, 32-bit, 80MHz, 256KB Flash, 64K x 8 RAM, CANbus/I²C/SPI/UART, 26 I/O, 1.71V-3.6V, -40°C to 85°C, 32-UFQFPN (5x5).","salesMarkdown":"The STM32L431KCU6TR: On-chip peripherals include a 12-bit ADC with 10 channels, a 12-bit DAC with 2 channels, CANbus, I²C, SPI, UART/USART, QSPI, and SAI — enough serial interface variety to talk to sensors, displays, and motor drivers without external bridge chips. The 26 GPIOs in this package variant are the limiting factor: if your design needs more than 26 I/O, step up to the 48-pin or 64-pin STM32L431 siblings. The lifecycle stage for this order code is flagged as end-of-life hot. That means the manufacturer has issued or is about to issue a last-time-buy notice. If you are qualifying a new design, consider the STM32L431KCU6TR only for a short production run or a BOM that already has a transition plan. For existing builds, secure your final order quantities now.","metaTitle":"ST STM32L431KCU6TR ARM Cortex-M4 MCU, 80MHz, 256KB Flash, 32-UFQFPN","metaDescription":"STM32L431KCU6TR from STMicroelectronics: 32-bit ARM Cortex-M4 MCU, 80MHz, 256KB Flash, 64KB SRAM, -40°C to 85°C, 32-UFQFPN. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR)","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, QSPI, SAI, SPI, SWPMI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"26","Core Processor":"ARM® Cortex®-M4","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L431","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.8561","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/86f7a3dc29512a2942ecada8e2a8cc97.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L431KCU6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L431KCU6TR?","answer":"Within the STM32L4 series, pin-compatible alternatives with different Flash/RAM densities exist under the same base product number STM32L431. Verify the exact package and memory size against your firmware image before substituting."},{"question":"What is STM32L431KCU6TR's listed speed?","answer":"The core processor runs at 80 MHz."},{"question":"What is the footprint of STM32L431KCU6TR?","answer":"The supplier device package is 32-UFQFPN with a 5x5 mm body and exposed pad."},{"question":"Is STM32L431KCU6TR compatible with the STM32L4 series?","answer":"Yes, it is part of the STM32L4 series and shares the same peripheral set, supply range, and ARM Cortex-M4 core as other STM32L4 devices."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L431KCU6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L431KCU6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T18:12:59.411Z","lastPublished":"2026-07-11T18:12:59.411Z","indexable":true}}