{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L051K8U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L051K8U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L051K8U6","factsUrl":"https://icboms.com/api/mcp/products/STM32L051K8U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L051K8U6, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, 1.65 V to 3.6 V supply, 27 I/O, I²C/SPI/UART, 10x12-bit ADC, -40 to 85°C, 32-UFQFPN (5x5 mm).","salesMarkdown":"## Why this MCU exists on your BOM The STM32L051K8U6 is an STMicroelectronics ARM Cortex-M0+ 32-bit MCU from the STM32L0 ultra-low-power series. ## Memory budget and what fits The 2 KB of EEPROM is a real advantage — you can store calibration constants, node IDs, or fault logs without wearing the Flash. If your firmware image is over 50 KB or you need more than 8 KB of runtime heap, you are looking at the wrong density. For a Modbus RTU slave, a temperature logger, or a simple motor controller, this is the right fit. It is not automotive-grade (no AEC-Q100 in the record), so skip it for under-hood or chassis applications. ## Lifecycle status — still a current design-in part ST lists this as an active product. The base number STM32L051 covers several package and memory variants, so if you need a different pin count or density later, the migration path stays within the same family.","metaTitle":"STM32L051K8U6 ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash","metaDescription":"STMicroelectronics STM32L051K8U6 32-bit MCU, ARM Cortex-M0+ core, 32 MHz, 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, 1.65-3.6 V supply, -40 to 85°C.","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":"64KB (64K 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":"$4.7000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4480b8ddc40b685393082b7ee2561685.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can STM32L051K8U6 replace STM32L051K8T6?","answer":"The STM32L051K8U6 and STM32L051K8T6 share the same core, memory, and peripherals but differ in package — the U6 is a 32-UFQFPN (5x5 mm) while the T6 is a 32-LQFP (7x7 mm). They are not pin-compatible; the board layout must match the package footprint. If your design uses the LQFP version, the UFQFPN variant requires a PCB respin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L051K8U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L051K8U6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:28:24.596Z","lastPublished":"2026-07-16T12:28:24.596Z","indexable":true}}