{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF52AATAX","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF52AATAX","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF52AATAX","factsUrl":"https://icboms.com/api/mcp/products/STM8AF52AATAX","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8AF52AATAX, 8-Bit STM8A MCU, 24MHz, 128KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, 68 I/O, CANbus/LIN/SPI/I2C/UART, 16x10b ADC, -40°C~85°C, 80-LQFP.","salesMarkdown":"## What the STM8AF52AATAX brings to an automotive ECU BOM The STM8AF52AATAX is an 8-bit STM8A-series MCU from STMicroelectronics, built for cost-sensitive automotive body-control and gateway nodes. Its 24 MHz core drives a 128 KB Flash program store with 6 KB RAM and a separate 2 KB EEPROM block — that dedicated EEPROM saves the overhead of software-emulated storage for calibration constants and fault codes. On the peripheral side it carries CAN 2.0, LIN, SPI, I²C, and two UART/USART channels, plus a 16-channel 10-bit ADC — enough to handle a sunroof module, seat controller, or HVAC blower without an external CAN transceiver companion. Housed in an 80-pin LQFP (14x14 mm), it gives 68 GPIOs for switch sensing, LED driving, and relay coil control. ## NRND — what that means for a production line That is not an immediate EOL — existing production can continue — but the clock is running on last-time-buy windows. No official successor MPN appears in the record, so a new design should target a pin-compatible STM8A or STM8AF variant still in active status. For a running BOM, secure enough stock through the LTB phase or qualify a drop-in alternative before the window closes. ## Memory map and firmware strategy The 128 KB Flash fits a moderate CAN- or LIN-stack application with room for a bootloader. The 6 KB RAM is tight for large frame buffers — plan for DMA-driven peripheral transfers.","metaTitle":"ST STM8AF52AATAX 8-bit MCU, 128KB Flash, 24MHz, NRND","metaDescription":"STMicroelectronics STM8AF52AATAX 8-bit MCU with 128KB Flash, 6KB RAM, 2KB EEPROM, 24MHz core. Automotive-grade peripherals: CAN, LIN, 16x10b ADC.","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":"Tape & Reel (TR)","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":"68","Core Processor":"STM8A","Package / Case":"80-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":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"80-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2302","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a76a247b2d898b9b81fdf0b841467bbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF52AATAX/alternatives.json"},"ai":{"faq":[{"question":"What is the recommended replacement for STM8AF52AATAX?","answer":"The evidence does not list an official successor. For a new design, look at active STM8AF or STM8A variants in the same 80-LQFP package with matching CAN/LIN peripherals — pin compatibility should be verified against the target's datasheet."},{"question":"What is the STM8AF52AATAX's core speed and memory?","answer":"It runs at 24 MHz with 128 KB Flash, 6 KB RAM, and 2 KB EEPROM — the dedicated EEPROM is a practical advantage over software-emulated storage for calibration and fault-code retention."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF52AATAX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF52AATAX 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}}