{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8S003F3U6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8S003F3U6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8S003F3U6TR","factsUrl":"https://icboms.com/api/mcp/products/STM8S003F3U6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8S003F3U6TR, STM8S series 8-bit MCU, 16 MHz core, 8 KB Flash, 1 KB RAM, 128 B EEPROM, 2.95 V–5.5 V supply, -40 to 85 °C, 20-UFQFPN (3x3 mm).","salesMarkdown":"The STM8S003F3U6TR is an 8-bit microcontroller from ST's STM8S value line, built around the STM8 core running at 16 MHz. The 16 MHz clock is the maximum CPU frequency. For a typical instruction-execution mix (most single-cycle, some multi-cycle), the effective throughput lands around 8 to 12 MIPS. That is enough for a 100 kHz control loop, a UART at 115200 baud, or a SPI transaction at a few megabits per second. If your application needs to run a PID loop at 10 kHz while polling an ADC and updating a display, this part has the headroom. ## Memory sizing — 8 KB Flash, 1 KB RAM, 128 B EEPROM The 8 KB Flash is the firmware budget. A typical UART bootloader plus a simple state machine fits in under 4 KB, leaving room for a modest application. The 1 KB RAM handles a few dozen variables and a small buffer — enough for a 256-byte UART FIFO and a 64-byte sensor data structure. If your firmware needs more than 8 KB of code space, you will need to step up to the STM8S103 or STM8S105 family. It is suited for reflow assembly and fits on tight PCBs where every square millimetre counts. ST lists the STM8S003F3U6TR as Active.","metaTitle":"ST STM8S003F3U6TR 8-bit MCU, 16 MHz, 8 KB Flash, 20-UFQFPN","metaDescription":"STMicroelectronics STM8S003F3U6TR 8-bit MCU, 16 MHz core, 8 KB Flash, 1 KB RAM, 128 B EEPROM, 20-UFQFPN (3x3 mm). Active lifecycle, 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":"STM8S","Package":"Tape & Reel (TR); Cut Tape (CT)","RAM Size":"1K x 8","Core Size":"8-Bit","EEPROM Size":"128 x 8","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"16","Core Processor":"STM8","Package / Case":"20-UFQFN","Product Status":"Active","Data Converters":"A/D 5x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"20-UFQFPN (3x3)","Voltage - Supply (Vcc/Vdd)":"2.95V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f9bbd7cc38533f2d818e2d311349223e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8S003F3U6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM8S003F3U6TR and STM8S003F3P6?","answer":"The two parts share the same core, memory, and peripheral set. The difference is the package: the U6TR variant comes in a 20-UFQFPN (3x3 mm) leadless package, while the P6 variant uses a 20-TSSOP package. The UFQFPN is smaller and lower-profile, but requires reflow soldering and has no exposed leads for manual probing. The TSSOP is easier to hand-solder and inspect. Choose the package that matches your assembly process and board space."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8S003F3U6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8S003F3U6TR 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}}