{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F051K4T6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F051K4T6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F051K4T6","factsUrl":"https://icboms.com/api/mcp/products/STM32F051K4T6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F0 series, STM32F051K4T6, 32-bit ARM Cortex-M0 MCU, 48 MHz, 16 KB Flash, 8 KB RAM, 32-LQFP (7x7 mm), -40 to 85 °C, 2 V to 3.6 V supply.","salesMarkdown":"## What this Cortex-M0 MCU brings to a BOM At 48 MHz the Cortex-M0 delivers enough compute for polling loops, timer-based PWM generation, and moderate data processing. The flash wait-state penalty at this clock is minimal — the core can sustain single-cycle access from Flash at 48 MHz with the prefetch buffer enabled, keeping interrupt latency predictable. For comparison, the STM32L151CBU6A runs at 32 MHz, so this part has a 50% clock advantage for tasks that don't need the series' low-power features. ## Memory budget — 16 KB Flash, 8 KB RAM That's enough for a bootloader plus a modest application — think a CAN node, a brushless-DC commutation loop, or a serial-to-I²C bridge. If your code footprint exceeds 12 KB or your RAM needs push past 6 KB (leaving headroom for stack and DMA buffers), you'll want to step up to a higher-density STM32F0 variant like the STM32F051K6 or STM32F051K8. It is not qualified for automotive under-hood or extended-temperature applications (125°C).","metaTitle":"STM32F051K4T6 ARM Cortex-M0 MCU, 48 MHz, 16 KB Flash","metaDescription":"STMicroelectronics STM32F051K4T6 32-bit MCU, ARM Cortex-M0 at 48 MHz, 16 KB Flash, 8 KB RAM, 32-LQFP. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"STM32F0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"25","Core Processor":"ARM® Cortex®-M0","Package / Case":"32-LQFP","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":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.5200","priceTiers":[{"qty":1,"price":"$3.52000","currency":"USD"},{"qty":10,"price":"$3.16500","currency":"USD"},{"qty":25,"price":"$2.99200","currency":"USD"},{"qty":80,"price":"$2.59300","currency":"USD"},{"qty":250,"price":"$2.46008","currency":"USD"},{"qty":500,"price":"$2.20742","currency":"USD"},{"qty":1000,"price":"$1.86167","currency":"USD"},{"qty":2500,"price":"$1.76859","currency":"USD"},{"qty":5000,"price":"$1.70210","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5b8222026032a8f6c67417def25d2d17.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F051K4T6/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for STM32F051K4T6?","answer":"The STM32L151CBU6A is a functional peer from the same manufacturer, but it is not a pin-compatible drop-in. The STM32L151 uses a Cortex-M3 core at 32 MHz, has 37 I/O, and includes USB — differences in footprint, memory map, and peripheral set mean a firmware and board redesign would be required. For a direct second-source within the STM32F0 family, look at the STM32F051K6 (32 KB Flash) or STM32F051K8 (64 KB Flash) in the same 32-LQFP package."},{"question":"What compliance documentation does STM32F051K4T6 carry?","answer":"The part is ROHS3 Compliant (EU RoHS without exemptions). For specific compliance needs, the datasheet and manufacturer declarations should be consulted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F051K4T6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F051K4T6 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}}