{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF6266TDY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF6266TDY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF6266TDY","factsUrl":"https://icboms.com/api/mcp/products/STM8AF6266TDY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8AF6266TDY, Automotive AEC-Q100 STM8A series, 8-bit MCU, 16 MHz, 32KB (32K x 8) FLASH, 2K x 8 RAM, 1K x 8 EEPROM, 32-LQFP, -40°C to 150°C.","salesMarkdown":"## AEC-Q100 grade-0 8-bit MCU for 150°C under-hood environments The STMicroelectronics STM8AF6266TDY is an 8-bit MCU from the automotive-grade STM8A series, qualified to AEC-Q100 and rated for an operating junction temperature from -40°C to 150°C. That temperature grade, combined with AEC-Q100 qualification, places it firmly in grade-0 territory — the tier required for engine-bay, exhaust-side, or transmission-mounted electronics where ambient heat exceeds the 105°C or 125°C thresholds. ## Memory and peripheral budget — sizing the firmware fit With 32 KB of program Flash and 2 KB of RAM, this MCU is sized for control-oriented tasks — LIN slave nodes, window-lift or wiper motor control, HVAC damper actuators, or sensor aggregation modules. The 1 KB EEPROM gives a dedicated non-volatile store for trim values or diagnostic counters that avoids sector-erase overhead on the main Flash. The 25 available I/O lines in the 32-LQFP package provide enough headroom for a LIN transceiver, a few sensor inputs, and a PWM-driven load, but not for a large parallel display or a heavily multiplexed keypad. For a buyer filling a BOM line on an existing board, the NRND flag means the last-time-buy window is the procurement horizon. Sourcing through independent distribution is the practical channel for bridging production until a requalification is completed. ## Supply range and power-tree fit A 5 V rail is typical for LIN transceivers and sensor bias; a 3.3 V rail is more common in newer mixed-signal ECUs. The wide range means the MCU can sit on either supply without a level translator for the I/O, as long as the peripheral voltages are compatible. ## Package and board-level handling No thermal pad — the junction-to-ambient path relies on the leadframe and PCB copper. The -40°C to 150°C operating range means the package must survive repeated thermal cycling from cold crank to hot soak; the LQFP construction is proven for that duty cycle in automotive Tier-1 production. The shipping medium is tray, which is the typical format for automated pick-and-place in high-volume lines, though reels are common for this package class — verify the preferred format with your contract manufacturer.","metaTitle":"STM8AF6266TDY 8-bit MCU, AEC-Q100, 16 MHz, 32 KB Flash","metaDescription":"STMicroelectronics STM8AF6266TDY automotive 8-bit MCU, 16 MHz core, 32 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, AEC-Q100, -40°C to 150°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"16MHz","Series":"Automotive, AEC-Q100, STM8A","Package":"Tray","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-LQFP","Product Status":"Not For New Designs","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)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.6191","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/50583dbf408c178457ce0059a412707e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF6266TDY/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for STM8AF6266TDY?","answer":"The practical replacement is a pin-compatible STM8A-family device in the same 32-LQFP package that maintains the AEC-Q100 qualification and 150°C rating. Migration to a newer STM8AF- or STM8AL-series variant is the typical path, but requalification testing is required."},{"question":"Is STM8AF6266TDY AEC-Q100 qualified?","answer":"Yes. The series is explicitly listed as Automotive, AEC-Q100, STM8A. The -40°C to 150°C operating temperature range confirms grade-0 qualification, suitable for under-hood and engine-bay environments."},{"question":"Does STM8AF6266TDY have a built-in ADC?","answer":"Yes. The data converters include a 7-channel 10-bit ADC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF6266TDY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF6266TDY 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}}