{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F051K4U7","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F051K4U7","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F051K4U7","factsUrl":"https://icboms.com/api/mcp/products/STM32F051K4U7","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F051K4U7, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 16 KB Flash, 8 KB SRAM, 27 I/O, 2 V to 3.6 V supply, -40°C to 105°C, 32-UFQFN Exposed Pad.","salesMarkdown":"The STM32F051K4U7: The ARM Cortex-M0 core runs at 48 MHz, which is the maximum clock for the STM32F0 value line. At this speed the part can handle a single sensor-fusion loop, a UART-to-SPI bridge, or a simple motor-control PWM cycle without stalling. The 48 MHz PLL requires one flash wait state above 24 MHz — the hardware handles it automatically, but the timing budget for tight ISRs should account for the fetch penalty. The 16 KB program memory suits a single-purpose control algorithm, a bootloader plus a modest application, or a Modbus slave stack. The 8 KB SRAM leaves room for a few hundred bytes of stack and a moderate-size data buffer — enough for a 256-byte UART FIFO and a 2 KB ADC sample array. ## Industrial temperature range and the UFQFN footprint The 105°C upper limit is the extended industrial grade; the part will hold its timing and ADC accuracy across that span, but the internal oscillator drifts more at the extremes, so a crystal is recommended for precision timing. The 32-UFQFN with exposed pad is a space-saving, thermally enhanced package. The pad is the only thermal path — without a via stitch under the package, junction temperature rises quickly above 85°C ambient. ## Peripherals and I/O count for the BOM The 27 I/O lines in this 32-pin package give enough headroom for a 16-bit parallel LCD interface, a keypad matrix, or a handful of sensor interrupts alongside the communication peripherals. The integrated DMA, I²S, POR, PWM, and WDT reduce external component count — no need for a separate watchdog or POR supervisor. The HDMI-CEC block is a niche feature for consumer AV equipment; most industrial designs will leave it unused. The 13-channel 12-bit ADC and single 12-bit DAC cover analog front-end needs for current sensing, temperature monitoring, or set-point generation.","metaTitle":"STM32F051K4U7 ARM Cortex-M0 MCU, 48 MHz, 16 KB Flash","metaDescription":"STM32F051K4U7 32-bit ARM Cortex-M0 MCU from STMicroelectronics, 48 MHz core, 16 KB Flash, 8 KB SRAM, 27 I/O, -40 to 105°C. Active lifecycle.","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":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5b8222026032a8f6c67417def25d2d17.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F051K4U7/alternatives.json"},"ai":{"faq":[{"question":"Does STM32F051K4U7 have DMA?","answer":"Yes, the STM32F051K4U7 includes a DMA controller as one of its on-chip peripherals, listed alongside I²S, POR, PWM, and WDT."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F051K4U7","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F051K4U7 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}}