{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AF52AATCX","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AF52AATCX","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AF52AATCX","factsUrl":"https://icboms.com/api/mcp/products/STM8AF52AATCX","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8AF52AATCX, Automotive AEC-Q100 STM8A series 8-bit MCU, 128KB Flash, 6K x 8 RAM, 2K x 8 EEPROM, 24MHz core speed, 68 I/O, CAN/I²C/LIN/SPI/UART, 80-LQFP, -40°C to 125°C.","salesMarkdown":"## Automotive 8-bit MCU with CAN and LIN ## NRND — plan for a replacement The automotive qualification and 80-LQFP footprint mean that a drop-in replacement from the same series is the cleanest migration path — verify the exact order code against your BOM's temperature grade and memory density requirements. ## 24 MHz core and memory sizing for automotive control The 2 KB EEPROM is useful for storing fault codes, trim values, or configuration parameters without needing external non-volatile memory. The 10-bit ADC with 16 channels covers analog sensor inputs like temperature, pressure, or potentiometer feedback. For designs that need more RAM or a higher core clock, a move to the STM8AF52A8 or a 32-bit STM32A part would be the next step up. The 80-LQFP package (14x14 mm) with 0.5 mm pitch is a standard footprint for automotive MCUs — it reflows well on standard FR-4 with a 0.8 mm or 1.6 mm board thickness. The supply range of 3V to 5.5V covers both 3.3V and 5V automotive rails, simplifying power supply design. The peripherals include brown-out reset, POR, PWM, and watchdog — all essential for robust automotive operation without external supervisory ICs.","metaTitle":"ST STM8AF52AATCX 8-bit MCU, 128KB Flash, 24MHz, AEC-Q100","metaDescription":"STM8AF52AATCX automotive 8-bit MCU with 128KB Flash, 6KB RAM, 2KB EEPROM, CAN/LIN, 24MHz core, -40°C to 125°C.","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":"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 ~ 125°C (TA)","Supplier Device Package":"80-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"3V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.5214","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a76a247b2d898b9b81fdf0b841467bbd.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AF52AATCX/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for STM8AF52AATCX?","answer":"STMicroelectronics has not published a direct successor order code in the public record for this specific variant. The closest path is to evaluate a pin-compatible STM8A family member in the same 80-LQFP package with matching temperature grade and memory density — the STM8AF52A8 is a commonly cross-shopped alternative, but verify the exact Flash/RAM/EEPROM sizes and peripheral set against your firmware binary and pin assignments."},{"question":"What is STM8AF52AATCX's listed speed?","answer":"The core processor runs at 24 MHz, which is the maximum clock frequency for this 8-bit STM8A architecture. At this speed the Flash requires zero wait states for single-cycle access, keeping interrupt latency predictable for real-time CAN and LIN message handling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AF52AATCX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AF52AATCX 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}}