{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F051R4T6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F051R4T6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F051R4T6","factsUrl":"https://icboms.com/api/mcp/products/STM32F051R4T6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F0 series 32-bit ARM Cortex-M0 MCU, STM32F051R4T6, 48MHz, 16KB Flash, 8K x 8 RAM, 55 I/O, 64-LQFP, -40°C to 85°C.","salesMarkdown":"It packs 16KB of Flash and 8K x 8 of RAM into a 64-LQFP package — enough for sensor fusion, motor control loops, or communication bridges in industrial and consumer gear. ## 48MHz ceiling and 16KB floor — sizing the firmware At 48MHz the Cortex-M0 delivers about 0.9 DMIPS/MHz, so you are looking at roughly 43 DMIPS peak. That is enough for a UART-driven protocol stack, a PID loop at a few kHz, or a basic UI over SPI. The 16KB Flash is the real limiter — you will want to compile with size optimization from day one and keep the bootloader lean. 8KB of RAM handles a couple of moderate buffers plus stack, but forget about large frame buffers or heavy data logging on chip. If your firmware outgrows the Flash, the STM32F051R6T6 (32KB) is the natural step up in the same package. ## Industrial temperature, 64-LQFP — field-swap friendly The 64-LQFP (10x10 mm) is a standard gull-wing package you can hand-solder with a decent iron and flux — no hot-air station required, no hidden pads underneath. That matters when you are swapping a dead MCU on site without a rework bench. ## Supply range and on-chip converters Operates from 2V to 3.6V, so it plays nicely with a single 3.3V rail or a 3.0V lithium cell. No last-time-buy clock ticking, no forced redesign for a drop-in replacement. That gives procurement breathing room for multi-year production runs.","metaTitle":"STM32F051R4T6 ARM Cortex-M0 MCU, 48MHz, 16KB Flash, 64-LQFP","metaDescription":"STMicroelectronics STM32F051R4T6 32-bit MCU with ARM Cortex-M0 core at 48MHz, 16KB Flash, 8KB RAM, 55 I/O in 64-LQFP. Active lifecycle, industrial temp range.","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":"55","Core Processor":"ARM® Cortex®-M0","Package / Case":"64-LQFP","Product Status":"Active","Data Converters":"A/D 19x12b; 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":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5b8222026032a8f6c67417def25d2d17.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F051R4T6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32F051R4T6 and STM32F051R6T6?","answer":"The STM32F051R4T6 has 16KB Flash and 8K x 8 RAM, while the STM32F051R6T6 doubles the Flash to 32KB. Both share the same 64-LQFP package, 48MHz Cortex-M0 core, 55 I/O, and peripheral set. The R6 variant is the drop-in upgrade if your firmware outgrows the 16KB ceiling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F051R4T6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F051R4T6 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}}