{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8L151K4U6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8L151K4U6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8L151K4U6","factsUrl":"https://icboms.com/api/mcp/products/STM8L151K4U6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8L151K4U6, STM8L EnergyLite 8-bit MCU, 16 MHz, 16 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 1.8V-3.6V, -40°C to 85°C, 32-UFQFPN.","salesMarkdown":"## What this STM8L151K4U6 brings to the board The STMicroelectronics STM8L151K4U6 is an 8-bit microcontroller from the STM8L EnergyLite family, built around the STM8 core and clocked at 16 MHz. It packs 16 KB of Flash program memory, 2K x 8 of RAM, and 1K x 8 of EEPROM. ## 16 MHz core and the peripheral set Sixteen megahertz is a comfortable pace for an 8-bit core handling 12-bit ADC conversions (22 channels), a 12-bit DAC, PWM generation, and DMA transfers without stalling. It comes in a 32-UFQFN with an exposed pad (5x5 mm body — the supplier device package is 32-UFQFPN). Surface-mount only — this is not a socketed part, so plan for reflow or hot-air rework. The 30 I/O lines give you plenty of headroom for a keypad matrix, LED indicators, and a few spare GPIOs for board-level glue logic. For dual-sourcing or a drop-in with more memory, the STM8L151K6U6 is the same footprint and peripheral set but with 32 KB of Flash instead of 16 KB — worth a look if the firmware is likely to grow.","metaTitle":"STM8L151K4U6 8-bit MCU, STM8L EnergyLite, 16 MHz","metaDescription":"STMicroelectronics STM8L151K4U6 8-bit MCU, 16 MHz core, 16 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, -40°C to 85°C, 32-UFQFPN. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"16MHz","Series":"STM8L EnergyLite","Package":"Tray","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, DMA, IR, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"30","Core Processor":"STM8","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 22x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3245","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a6a751855e41d176288c66669f17dd61.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8L151K4U6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM8L151K4U6 and STM8L151K6U6?","answer":"The STM8L151K6U6 doubles the program memory to 32 KB of Flash while keeping the same 32-UFQFPN footprint, 16 MHz core, peripheral set, and supply range. If your firmware fits in 16 KB, the K4U6 is the cost-optimized pick; if you expect the code to grow, the K6U6 is a pin-compatible upgrade path."},{"question":"Is STM8L151K4U6 RoHS compliant?","answer":"Yes, the STM8L151K4U6 is RoHS compliant — it ships as a lead-free, halogen-free device per ST's standard environmental compliance for the STM8L EnergyLite series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8L151K4U6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8L151K4U6 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}}