{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L052K8U3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L052K8U3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L052K8U3TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L052K8U3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L052K8U3TR, STM32L0 series 32-bit ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 27 I/O, I²C/SPI/USART/USB, 1.65V-3.6V, -40°C to 125°C, 32-UFQFPN (5x5 mm).","salesMarkdown":"## Ultra-low-power Cortex-M0+ with on-chip EEPROM ## 125 °C rating — industrial and automotive-adjacent environments That makes it a fit for engine-bay-adjacent electronics, outdoor telecom cabinets, and industrial motor drives where ambient heat soaks the PCB. The 125 °C junction rating also gives thermal headroom when the MCU is running full-tilt near a power stage or a regulator. 64 KB of Flash is the mid-range density in the STM32L0 family — enough for a USB stack, a modest RTOS, and application code for a sensor-logging or control-loop design. The 8 KB RAM is the tight spot: it forces careful allocation of stack, heap, and DMA buffers. If your design needs a large frame buffer or double-buffered USB endpoints, you'll be budgeting every byte. The 2 KB EEPROM, organized as 2K x 8, is byte-addressable and rated for 100k erase/write cycles per the family datasheet, so configuration parameters and calibration constants don't wear out the Flash. ## Package and thermal pad — layout notes The datasheet's recommended footprint is 5x5 mm with a 3.2x3.2 mm exposed pad opening. No room for fan-out under the package; all 27 I/O and power pins route out on the perimeter. ROHS3 compliant. The base product number is STM32L052, which covers multiple Flash and package variants in the same die family. For a production BOM, this is a safe choice — no imminent obsolescence risk, and ST's long-term support for the STM32L0 series is solid.","metaTitle":"STM32L052K8U3TR STM32L0 MCU, 32 MHz, 64 KB Flash, UFQFPN-32","metaDescription":"STM32L052K8U3TR: 32-bit ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash, 8 KB RAM, 2 KB EEPROM, -40 to 125°C, 1.65-3.6V. Active, RoHS3.","metaKeywords":null},"attributes":{"series":"STM32L0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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, USB","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; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L052","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.9400","priceTiers":[{"qty":1,"price":"$4.94000","currency":"USD"},{"qty":10,"price":"$4.43500","currency":"USD"},{"qty":25,"price":"$4.19320","currency":"USD"},{"qty":100,"price":"$3.63410","currency":"USD"},{"qty":250,"price":"$3.44776","currency":"USD"},{"qty":500,"price":"$3.09366","currency":"USD"},{"qty":1000,"price":"$2.60911","currency":"USD"},{"qty":3000,"price":"$2.47866","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/0e08a9b8947f5c1faa7dae988a3ee99f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L052K8U3TR/alternatives.json"},"ai":{"faq":[{"question":"Is STM32L052K8U3TR obsolete or still active?","answer":"ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L052K8U3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L052K8U3TR 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}}