{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF5289TCY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF5289TCY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF5289TCY","factsUrl":"https://icboms.com/api/mcp/products/STM8AF5289TCY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8A series, STM8AF5289TCY, 8-bit MCU, 24 MHz, 64 KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, 52 I/O, CANbus, LINbus, SPI, I²C, UART/USART, A/D 16x10b, -40°C to 125°C, 64-LQFP.","salesMarkdown":"## Automotive 8-bit MCU with AEC-Q100 grade The peripheral set includes CANbus, LINbus, SPI, I²C, and UART/USART interfaces, plus a 16-channel 10-bit ADC, making it suited for body controllers, sensor fusion nodes, and actuator drivers in passenger vehicles and commercial trucks. ## NRND — plan the last-time buy This means STMicroelectronics has flagged it for eventual discontinuation; new production programs should not select this part. For existing BOM lines, procurement should confirm the last-time-buy window and secure sufficient inventory for the remaining production run. Brown-out detect and POR are integrated, so the MCU resets cleanly during cranking events. ## 64 KB Flash and 2K EEPROM — firmware and calibration storage The 64 KB Flash is sized for moderate automotive control firmware — enough for a CANopen stack, sensor calibration, and diagnostic routines. The separate 2K x 8 EEPROM holds calibration tables and fault codes without wearing the Flash. With 52 I/O lines in a 64-LQFP package, the part can interface to multiple sensors, switches, and actuators while leaving headroom for future feature additions.","metaTitle":"STM8AF5289TCY 8-bit MCU, 24 MHz, 64 KB Flash, AEC-Q100","metaDescription":"STM8AF5289TCY automotive 8-bit MCU: 24 MHz core, 64 KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, -40°C to 125°C, AEC-Q100.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"24MHz","Series":"Automotive, AEC-Q100, STM8A","Package":"Tray","RAM Size":"6K x 8","Core Size":"8-Bit","EEPROM Size":"2K x 8","Peripherals":"Brown-out Detect/Reset, POR, PWM, WDT","Connectivity":"CANbus, I²C, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"STM8A","Package / Case":"64-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 16x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"64KB (64K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~125°C(TA)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a76a247b2d898b9b81fdf0b841467bbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF5289TCY/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AF5289TCY AEC-Q100 qualified?","answer":"Yes, the STM8AF5289TCY is part of the Automotive, AEC-Q100 series, qualified for automotive-grade applications including under-hood and chassis-domain ECUs."},{"question":"What are the alternatives for STM8AF5289TCY?","answer":"No official pin-compatible replacement is listed in the available documentation. For new designs, consider the active STM8A series variants with similar Flash and peripheral sets; verify pin compatibility against the 64-LQFP footprint before committing the BOM."},{"question":"What is STM8AF5289TCY's listed speed?","answer":"The core runs at 24 MHz, which is the maximum clock frequency for this 8-bit STM8A core. At this speed, the Flash requires zero wait states for single-cycle instruction fetch."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF5289TCY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF5289TCY 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}}