{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L051K6U6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L051K6U6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L051K6U6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L051K6U6TR","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L0 series STM32L051K6U6TR, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 32 KB Flash, 8K x 8 SRAM, 2K x 8 EEPROM, 1.65V~3.6V, -40°C~85°C, 32-UFQFPN (5x5).","salesMarkdown":"## 32 MHz Cortex-M0+ with integrated EEPROM — what it buys the BOM It packs 32 KB of Flash, 8 KB of SRAM, and a separate 2 KB EEPROM block — the latter saves an external serial EEPROM for parameter storage in sensor nodes or config registers in motor drives. ## Memory map and firmware staging The 32 KB Flash (32K x 8) is sized for a lightweight RTOS like FreeRTOS plus a modest application layer; the 8 KB SRAM leaves room for a few hundred bytes of stack and a DMA buffer. The 2 KB EEPROM is rated for 100k erase/write cycles — enough for calibration coefficients or fault logs over a ten-year product life without wear-leveling. The internal oscillator trims to within 1% accuracy, so a crystal can be omitted in non-timing-critical designs. ## Package and thermal routing Housed in a 32-UFQFPN (5x5 mm) with an exposed pad, this package suits space-constrained PCBs. ## Lifecycle and supply posture ST lists the STM32L051K6U6TR as Active.","metaTitle":"ST STM32L051K6U6TR ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash","metaDescription":"STMicroelectronics STM32L051K6U6TR 32-bit ARM Cortex-M0+ MCU at 32 MHz with 32 KB Flash, 8 KB SRAM, 2 KB EEPROM.","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":"Tape & Reel (TR); Cut Tape (CT)","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","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4480b8ddc40b685393082b7ee2561685.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L051K6U6TR?","answer":"Within the STM32L0 series, the STM32L051K6U6 (non-tape-and-reel variant) is the same die in the same package. The STM32L051K8U6 offers 64 KB Flash and 8 KB SRAM as a drop-in upgrade if more code space is needed — verify the firmware image fits before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L051K6U6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L051K6U6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:21:29.911Z","lastPublished":"2026-07-16T13:21:29.911Z","indexable":true}}