{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF52A8TCY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF52A8TCY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF52A8TCY","factsUrl":"https://icboms.com/api/mcp/products/STM8AF52A8TCY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8A series, STM8AF52A8TCY, 8-Bit MCU, 24MHz, 128KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, 48-LQFP, -40°C to 125°C, AEC-Q100.","salesMarkdown":"## Automotive 8-bit MCU with CAN and LIN — what this part is The 48-LQFP package brings out 38 I/O lines and a 10-channel 10-bit ADC. This is the official notification from STMicroelectronics that the part is in the phase-out pipeline. For sustaining production on an existing BOM, the NRND flag means you should secure your LTB quantities and plan a migration before the final EOL notice arrives. ## 24 MHz core, 128 KB Flash — sizing the application fit The 24 MHz clock rate is typical for the STM8A value line — enough for real-time CAN message handling, sensor polling at 1 kHz loops, and local actuation logic. The 128 KB Flash (128K x 8) and 6K x 8 RAM are sized for a single CAN node running a body-control or gateway firmware image with room for a modest bootloader. The 2K x 8 EEPROM in the memory map is useful for calibration constants and fault codes that survive resets without external storage. ## 48-LQFP and the board-level fit The 48-LQFP package is a 0.5 mm pitch, 7 mm x 7 mm body — a common footprint shared across the STM8AF52xx density options. If you are replacing a failed unit on an existing board, the mechanical fit is the same as the STM8AF52A8TAx or STM8AF52A9Tx variants in the same package. The 38 I/O count includes the 10-bit ADC inputs and the CAN/LIN transceiver control pins. Surface-mount only; no through-hole option exists for this package.","metaTitle":"STM8AF52A8TCY 8-bit MCU, 128KB Flash, AEC-Q100, 48-LQFP","metaDescription":"STM8AF52A8TCY automotive 8-bit MCU: 24MHz core, 128KB Flash, 6K RAM, 2K EEPROM, CAN/LIN, -40°C to 125°C. NRND status.","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":"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~125°C(TA)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7331","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a76a247b2d898b9b81fdf0b841467bbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF52A8TCY/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AF52A8TCY obsolete or end-of-life?","answer":"The STM8AF52A8TCY carries a Not Recommended for New Designs (NRND) status. It is not yet fully end-of-life, but STMicroelectronics does not recommend it for new designs. Existing production can continue through the last-time-buy window."},{"question":"What is the direct replacement for STM8AF52A8TCY?","answer":"No official direct replacement is listed in the available lifecycle data. For new designs, consult the STM8A series product selector or contact STMicroelectronics for the recommended successor. The part is pin-compatible across the STM8AF52xx density options in the same 48-LQFP package."},{"question":"Can STM8AF52A8TCY be used in new automotive ECU designs?","answer":"STMicroelectronics lists this part as NRND, meaning it is not recommended for new designs. For a new automotive ECU, select a current-production STM8A or STM32 automotive MCU instead."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF52A8TCY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF52A8TCY 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}}