{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L051K6U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L051K6U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L051K6U6","factsUrl":"https://icboms.com/api/mcp/products/STM32L051K6U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, ARM® Cortex®-M0+ 32-bit MCU, 32 MHz, 32 KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 27 I/O, 1.65 V–3.6 V, -40 to 85 °C, 32-UFQFPN (5x5 mm).","salesMarkdown":"The STM32L051K6U6 is a 32-bit ARM Cortex-M0+ MCU from ST's STM32L0 ultra-low-power series, clocked at 32 MHz. It carries 32 KB of Flash program memory, 8 KB of SRAM, and 2 KB of embedded EEPROM — enough for a modest firmware image with non-volatile parameter storage, so you can skip an external serial EEPROM on the board. The 27 I/O lines and peripherals including I²C, SPI, UART/USART, IrDA, PWM, and a 10-channel 12-bit ADC make it a fit for sensor nodes, battery-powered instrumentation, and simple control loops in industrial or commercial environments rated -40°C to 85°C. ## 32 MHz — enough for sensor polling and light control The 32 MHz core speed is modest by today's MCU standards, but that is the point: the STM32L0 family trades raw MHz for low active and sleep current. For a sensor that wakes every second, reads a temperature, and sends a byte over I²C, 32 MHz is plenty. ## Memory budget: 32 KB Flash, 8 KB RAM, 2 KB EEPROM The 2 KB EEPROM is a real advantage: you can store calibration constants or fault logs without wearing the Flash. 8 KB RAM limits buffering; plan your DMA and stack usage accordingly. ## Supply and power: 1.65 V minimum, wide range","metaTitle":"ST STM32L051K6U6 ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash, UFQFPN-32","metaDescription":"STMicroelectronics STM32L051K6U6 32-bit MCU, ARM Cortex-M0+ at 32 MHz, 32 KB Flash, 8 KB RAM, 2 KB EEPROM, 27 I/O, -40 to 85°C, UFQFPN-32. Active lifecycle, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"2K x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"27","Core Processor":"ARM® Cortex®-M0+","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L051","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4480b8ddc40b685393082b7ee2561685.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L051K6U6/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum operating frequency of STM32L051K6U6?","answer":"The maximum operating frequency is 32 MHz."},{"question":"What is the package of STM32L051K6U6?","answer":"The STM32L051K6U6 comes in a 32-UFQFPN (5x5 mm) package with an exposed pad."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L051K6U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L051K6U6 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}}