{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF52A8TAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF52A8TAY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF52A8TAY","factsUrl":"https://icboms.com/api/mcp/products/STM8AF52A8TAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8A series STM8AF52A8TAY, 8-bit CISC MCU, 128KB (128K x 8) FLASH, 6K x 8 RAM, 2K x 8 EEPROM, 24MHz, 3V ~ 5.5V, 38 I/O, CANbus/I²C/LINbus/SPI/UART/USART, A/D 10x10b, -40°C ~ 85°C, Surface Mount, 48-LQFP.","salesMarkdown":"## 128 KB Flash, 6 KB RAM, 2 KB EEPROM — memory map for a body-control node The STM8AF52A8TAY is an 8-bit STM8A-series microcontroller from STMicroelectronics built around the STM8 core. The 24 MHz core speed is the ceiling for this part; at that clock the Flash needs one wait state, but the CISC architecture still delivers about 1.6 MIPS per MHz on typical code mixes. ## CAN and LIN on-chip — wired for automotive subnets The peripheral set includes a CAN 2.0B controller, a LIN/UART module, plus SPI and I²C. That makes this MCU a natural fit for automotive body-control modules — door nodes, seat controllers, HVAC blower panels — where the CAN bus carries the backbone traffic and LIN handles the local actuator network. The 10-channel 10-bit ADC (A/D 10x10b) reads analog sensors directly; the PWM and timer channels drive brushed DC motors or indicator LEDs without an external PWM controller. The internal oscillator means no external crystal is needed for the core clock, though the spec does not state the trimmed accuracy — for CAN bus timing, you will want to verify the oscillator tolerance against the CAN bit-timing budget in your application. For a new BOM line, you will want to evaluate the STM8AF52A8TAY's siblings in the STM8A family — the same 48-LQFP footprint and peripheral set are shared across the density options, so a pin-compatible migration within the family is possible without a board spin.","metaTitle":"ST STM8AF52A8TAY 8-bit MCU, 128KB Flash, 24MHz, 48-LQFP","metaDescription":"STM8AF52A8TAY 8-bit STM8A MCU with 128KB Flash, 6KB RAM, 2KB EEPROM, 24MHz core, CAN/LIN, -40°C to 85°C, 48-LQFP.","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":"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":"38","Core Processor":"STM8A","Package / Case":"48-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 10x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.3619","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a76a247b2d898b9b81fdf0b841467bbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF52A8TAY/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AF52A8TAY obsolete or EOL?","answer":"It is not yet fully End-of-Life, but ST is signaling that new designs should target a different part. For existing production, it remains available through distribution and independent channels while stock lasts."},{"question":"What is the replacement for STM8AF52A8TAY?","answer":"The STM8A family includes multiple density and package variants in the same 48-LQFP footprint — a pin-compatible migration within the family is the natural path, but you will need to check the specific peripheral and memory requirements against the current STM8A portfolio."},{"question":"What is STM8AF52A8TAY's listed speed?","answer":"The core runs at 24 MHz maximum."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF52A8TAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF52A8TAY 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}}