{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8S903F3M6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8S903F3M6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8S903F3M6","factsUrl":"https://icboms.com/api/mcp/products/STM8S903F3M6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8S903F3M6, STM8S series 8-bit MCU, 16 MHz core, 8 KB Flash, 1K x 8 RAM, 640 x 8 EEPROM, 2.95 V to 5.5 V, -40°C to 85°C, 20-SOIC package.","salesMarkdown":"## Active 8-bit MCU with 16 MHz core and integrated EEPROM The STMicroelectronics STM8S903F3M6 is an 8-bit microcontroller from the STM8S family, built around the STM8 core and clocked at 16 MHz. ## 16 MHz — what it buys on the bus The 16 MHz core speed is the ceiling for instruction throughput on this 8-bit STM8 architecture. At that clock, single-cycle ALU operations execute at 16 MIPS, which is enough to handle a 10 kHz control loop with sensor read, PID calculation, and PWM update all within one cycle. ## Memory budget: Flash, RAM, and EEPROM The 8 KB Flash and 1 KB RAM suit state-machine logic. The 640 bytes of EEPROM hold calibration constants. ## Supply and temperature: industrial-grade envelope Brown-out detect and POR are integrated, so the reset circuit needs only a pull-up and a decoupling cap. ## 20-SOIC package: footprint and rework Housed in a 20-SOIC (7.50 mm width) with surface-mount leads, this package is hand-solderable and inspectable under a microscope — no X-ray needed. The 1.27 mm pitch matches standard SOIC footprints, and the body width is wide enough that a hot-air rework station can remove it without damaging adjacent passives.","metaTitle":"ST STM8S903F3M6 8-bit MCU, 16 MHz, 8 KB Flash, 20-SOIC","metaDescription":"STMicroelectronics STM8S903F3M6 8-bit MCU, 16 MHz core, 8 KB Flash, 1 KB RAM, 640 B EEPROM, -40°C to 85°C, 2.95 V to 5.5 V, 20-SOIC.","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":"Tube","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~85°C(TA)","Supplier Device Package":"20-SO","Voltage - Supply (Vcc/Vdd)":"2.95V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/99a7192c520a3283640c68821053efb2.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8S903F3M6/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8S903F3M6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8S903F3M6 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}}