{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8S903F3M3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8S903F3M3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8S903F3M3TR","factsUrl":"https://icboms.com/api/mcp/products/STM8S903F3M3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8S series STM8S903F3M3TR, 8-bit MCU, STM8 core, 16 MHz, 8 KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, 16 I/O, 5x10b ADC, I²C/SPI/UART/LIN, 2.95V–5.5V, -40°C to 125°C, 20-SOIC package.","salesMarkdown":"## What this 8-bit MCU brings to a control board On-chip peripherals include a 5-channel 10-bit ADC, PWM, and a full set of watchdog and brown-out reset functions. ## 16 MHz — what it buys on the bus At 16 MHz the core can service a UART at standard baud rates without bit-banging and handle a PID loop in microseconds. ## Temperature range and supply — where it lives Rated from -40°C to 125°C, this MCU operates on a supply range of 2.95 V to 5.5 V.","metaTitle":"ST STM8S903F3M3TR 8-bit MCU, 16 MHz, 8 KB Flash, SOIC-20","metaDescription":"STMicroelectronics STM8S903F3M3TR 8-bit MCU: 16 MHz core, 8 KB Flash, 1 KB RAM, 640 B EEPROM, -40°C to 125°C, SOIC-20. Active production. Sourced 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)","RAM Size":"1K x 8","Core Size":"8-Bit","EEPROM Size":"640 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-SOIC (0.295\\\", 7.50mm Width)","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 ~ 125°C (TA)","Supplier Device Package":"20-SO","Voltage - Supply (Vcc/Vdd)":"2.95V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2915","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99a7192c520a3283640c68821053efb2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8S903F3M3TR/alternatives.json"},"ai":{"faq":[{"question":"What is the listed speed of STM8S903F3M3TR?","answer":"The core runs at 16 MHz, which is the listed speed for this STM8S-series microcontroller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8S903F3M3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8S903F3M3TR 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}}