{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L051K8T6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L051K8T6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L051K8T6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L051K8T6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 64 KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 1.65 V to 3.6 V, -40°C to 85°C, 32-LQFP (7x7 mm), 27 I/O, I²C/SPI/UART, internal oscillator, surface mount.","salesMarkdown":"## Memory sizing — what fits and what doesn't The STM32L051K8T6TR: 64 KB of program Flash and 8 KB of SRAM. The 2 KB EEPROM supports byte-erasable writes without a separate Flash page-erase cycle. ## Supply voltage and power budget The 1.65 V minimum supply is low enough to keep the MCU alive during a Li-ion cell's full discharge curve (down to about 2.7 V under load) and to interface directly with 1.8 V logic peripherals without level shifters. The 3.6 V maximum covers the full Li-ion charge voltage. For battery-powered designs, the stop-mode current (typically 0.4 µA with RTC running) is the headline number to budget against — the 32 MHz active current is about 100 µA/MHz, so the duty cycle of the application determines whether this part or a lower-speed Cortex-M0+ (like the STM32L031 at 32 MHz) is the better fit. ## Package and I/O count Housed in a 32-LQFP (7x7 mm) package, the STM32L051K8T6TR exposes 27 general-purpose I/Os. That's enough for a UART, an I²C bus, an SPI interface, and a handful of GPIOs for sensors or indicators — but tight for designs needing multiple parallel interfaces or a parallel LCD. The LQFP package is hand-solderable and rework-friendly, which helps during prototyping and low-volume production. ## Peripherals and connectivity The 10-channel 12-bit ADC handles analog inputs like battery voltage, temperature, or sensor outputs without an external ADC. ## Lifecycle and supply posture No last-time-buy or allocation risk is known at this writing.","metaTitle":"STM32L051K8T6TR ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash","metaDescription":"STMicroelectronics STM32L051K8T6TR 32-bit ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash, 8 KB RAM, 2 KB EEPROM, 1.65V-3.6V, -40°C to 85°C, 32-LQFP.","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-LQFP","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-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4480b8ddc40b685393082b7ee2561685.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is a suitable replacement or equivalent for STM32L051K8T6TR if it becomes unavailable?","answer":"Within the STM32L0 series, pin-compatible alternatives include the STM32L031K8 (same package, 32 KB Flash, no EEPROM) and the STM32L071K8 (192 KB Flash, 20 KB RAM, 6 KB EEPROM). For a direct drop-in with identical memory and peripherals, the STM32L051K8T6 (non-tape-and-reel) is the same die in the same package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L051K8T6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L051K8T6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:29:32.726Z","lastPublished":"2026-07-16T13:29:32.726Z","indexable":true}}