{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L431CCU6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L431CCU6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L431CCU6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L431CCU6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, STM32L431CCU6TR, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 256KB (256K x 8) FLASH, 64K x 8 RAM, 48-UFQFN Exposed Pad, -40°C ~ 85°C.","salesMarkdown":"The STM32L431CCU6TR: ARM Cortex-M4 core runs at 80 MHz with DSP and FPU extensions. ## Memory and connectivity — sizing the firmware and the bus 256 KB of Flash is the mid-density option in the STM32L431 line; it holds a full RTOS, a TCP/IP stack, and application code for a sensor hub or a motor-control node without external memory. The 64 KB SRAM leaves room for double-buffered ADC data or a display frame buffer. On the peripheral side, the part brings CAN, QSPI, SAI, and SWPMI alongside the usual I²C, SPI, and UART — the QSPI interface lets you attach a serial NOR Flash for firmware-over-the-air staging, and the SAI provides an I²S audio bus for voice or sound playback. ## Package and footprint — what the 48-UFQFPN means for the board The 48-UFQFPN (7x7 mm) with exposed pad is a compact, low-inductance package.","metaTitle":"STM32L431CCU6TR STM32L4 MCU, ARM Cortex-M4, 80MHz","metaDescription":"STM32L431CCU6TR 32-bit ARM Cortex-M4 MCU from STMicroelectronics. 80MHz core, 256KB Flash, 64KB SRAM, industrial temp -40°C to 85°C, 48-UFQFPN.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR) Cut Tape (CT)","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":"39","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-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":"48-UFQFPN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.8900","priceTiers":[{"qty":1,"price":"$5.89000","currency":"USD"},{"qty":10,"price":"$5.28700","currency":"USD"},{"qty":25,"price":"$4.99840","currency":"USD"},{"qty":100,"price":"$4.33190","currency":"USD"},{"qty":250,"price":"$4.10976","currency":"USD"},{"qty":500,"price":"$3.68768","currency":"USD"},{"qty":1000,"price":"$3.11009","currency":"USD"},{"qty":2500,"price":"$2.95459","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5001c15c5be880a0e65d1dfc08e4f0cc.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L431CCU6TR/alternatives.json"},"ai":{"faq":[{"question":"What are the alternatives to STM32L431CCU6TR?","answer":"The STM32L151CBU6A is an older STM32L1-series alternative with a 32 MHz Cortex-M3 core, 128 KB Flash, and a similar 48-pin package. The STM32L431CCU6TR offers roughly 2.5x the core clock speed, the DSP/FPU capability of the M4, and a richer peripheral set (QSPI, SAI, CAN) — so the L151 is a cost-reduction path only if the application can live without those features."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L431CCU6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L431CCU6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}