{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F051K8U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F051K8U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F051K8U6","factsUrl":"https://icboms.com/api/mcp/products/STM32F051K8U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F051K8U6, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 64 KB Flash, 8 KB SRAM, 27 I/O, 2 V to 3.6 V supply, -40 to 85 °C, 32-UFQFPN (5x5 mm) exposed pad, tray.","salesMarkdown":"The 27 I/O lines, plus peripherals including I²C, SPI, UART/USART, LIN, IrDA, and HDMI-CEC, cover most communication needs without external transceivers for short-range links. For procurement, this removes the obsolescence risk that often drives emergency cross-shopping on older MCUs. If you are qualifying this part for a production BOM, the active status gives confidence for multi-year supply planning, though as with any single-source device, maintaining a qualified second-source alternate can hedge allocation risk. ## 32-UFQFPN (5x5) — footprint and thermal note Layout engineers should connect the pad to a solid ground plane with at least four thermal vias. The 0.5 mm pitch is fine for standard SMT assembly, but the small body means the decoupling capacitor placement needs care — keep the 100 nF cap within 2 mm of the VDD/VSS pair to avoid supply bounce on the 48 MHz core.","metaTitle":"STM32F051K8U6 ARM Cortex-M0 MCU, 48 MHz, 64 KB Flash","metaDescription":"STMicroelectronics STM32F051K8U6 32-bit MCU, ARM Cortex-M0 at 48 MHz, 64 KB Flash, 8 KB SRAM, 27 I/O, -40 to 85 °C, 32-UFQFPN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"48MHz","Series":"STM32F0","Package":"Tray","RAM Size":"8K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, I²S, POR, PWM, WDT","Connectivity":"HDMI-CEC, I²C, IrDA, LINbus, 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 13x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F051","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)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.0800","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5b8222026032a8f6c67417def25d2d17.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F051K8U6/alternatives.json"},"ai":{"faq":[{"question":"What are the pin-compatible replacements for STM32F051K8U6?","answer":"Within the STM32F0 family, the STM32F031K6U6 (32 KB Flash, 32 KB SRAM) and STM32F051K4U6 (16 KB Flash) share the same 32-UFQFPN (5x5 mm) package and pinout, offering lower Flash density at a lower BOM cost. The STM32F072K8U6 (128 KB Flash, 48 MHz Cortex-M0+) is also pin-compatible but adds USB 2.0 and a larger memory footprint. All share the same supply range and temperature grade, making them drop-in alternatives for dual-sourcing or cost reduction."},{"question":"How to program STM32F051K8U6 using ST-Link?","answer":"The STM32F051K8U6 programs via the standard SWD (Serial Wire Debug) interface using an ST-Link/V2 or ST-Link/V3. Connect SWDIO to PA13, SWCLK to PA14, and VDD/VSS to the target's supply. The STM32CubeProgrammer or Keil/IAR IDEs handle the flash programming over SWD. No external crystal is needed for programming — the internal oscillator provides the debug clock."},{"question":"Is STM32F051K8U6 suitable for 3.3V systems?","answer":"Yes. The I/O are 5 V-tolerant on most pins, but verify the specific pin groups in the datasheet for HDMI-CEC and analog inputs. The internal oscillator runs at 48 MHz without an external crystal, simplifying the 3.3 V BOM."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F051K8U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F051K8U6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}