{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF6266UDX","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF6266UDX","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF6266UDX","factsUrl":"https://icboms.com/api/mcp/products/STM8AF6266UDX","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8AF6266UDX, Automotive AEC-Q100 STM8A series, 8-bit MCU, 16 MHz, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, I²C/LIN/SPI/UART, 25 I/O, 3V~5.5V, -40°C~150°C, 32-UFQFPN (5x5).","salesMarkdown":"## Automotive-grade 8-bit MCU with 150°C capability Its operating temperature range extends to 150°C, which puts it in the small group of MCUs that can sit on an engine-mounted PCB or inside a transmission controller without derating. The core runs at 16 MHz, and the 32 KB Flash program memory is paired with 2 KB RAM and 1 KB EEPROM — enough for a body-control module, a LIN-based actuator node, or a sensor-fusion hub that logs calibration data to the EEPROM. ## Memory and connectivity for automotive subnets The 1 KB EEPROM is a separate block from Flash, not emulated — useful for storing fault codes, trim values, or VIN fragments without wearing the program memory. The 7-channel 10-bit ADC covers analog sensor inputs like throttle position or thermistor lines. On the serial side, the part includes I²C, SPI, LINbus, and UART/USART interfaces. LIN is the typical choice for low-cost automotive subnets (window lift, seat control), while I²C and SPI handle on-board sensor or memory communication. ## Package and supply range Housed in a 32-UFQFPN with an exposed pad (5x5 mm), the STM8AF6266UDX is a surface-mount device meant for reflow assembly. The 25 I/O lines, combined with the internal oscillator and built-in brown-out reset, POR, PWM, and watchdog peripherals, reduce external component count.","metaTitle":"STM8AF6266UDX 8-bit MCU, AEC-Q100, 16 MHz, 32 KB Flash","metaDescription":"STMicroelectronics STM8AF6266UDX automotive 8-bit MCU: 16 MHz core, 32 KB Flash, 2 KB RAM, 1 KB EEPROM, I2C/SPI/LIN/UART, -40 to 150°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":"16MHz","Series":"Automotive, AEC-Q100, STM8A","Package":"Tape & Reel (TR)","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"I²C, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"25","Core Processor":"STM8A","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 7x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~150°C(TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.4478","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/50583dbf408c178457ce0059a412707e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF6266UDX/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AF6266UDX an automotive-grade microcontroller?","answer":"Yes. It belongs to the STM8A series and is qualified to AEC-Q100, the automotive stress-test standard. The -40°C to 150°C operating range supports under-hood and transmission-mounted applications."},{"question":"Does STM8AF6266UDX have I2C and SPI interfaces?","answer":"Yes. The connectivity block includes I²C, SPI, LINbus, and UART/USART, covering the common serial buses for automotive and industrial sensor networks."},{"question":"Is STM8AF6266UDX replaceable with STM8AF6266UCX?","answer":"The STM8AF6266UCX is a sibling variant in the same STM8AF6266 product family. Package differences may exist — verify the package code suffix against your board footprint before substituting. Both share the same core, memory, and peripheral set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF6266UDX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF6266UDX 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}}