{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM8AL3138TAY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM8AL3138TAY","canonicalUrl":"https://icboms.com/stmicroelectronics/STM8AL3138TAY","factsUrl":"https://icboms.com/api/mcp/products/STM8AL3138TAY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM8A series 8-bit MCU, STM8AL3138TAY, 16 MHz, 8 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 48-LQFP (7x7), -40°C to 85°C, 41 I/O, I²C/SPI/UART/LIN.","salesMarkdown":"The STMicroelectronics STM8AL3138TAY is an 8-bit MCU from the STM8A automotive-grade family, built around the STM8 core at 16 MHz. It packs 8 KB of Flash program memory, 2K x 8 of RAM, and 1K x 8 of EEPROM, with 41 I/O lines and a rich set of peripherals including I²C, SPI, UART/USART, LIN, and IrDA. The 48-LQFP package (7x7 mm) and a supply range of 1.65 V to 3.6 V make it a fit for space-constrained, low-power control applications in automotive body electronics, industrial sensors, and battery-powered modules. At 16 MHz, this core handles typical sensor polling, PWM generation, and LIN-bus communication without breaking a sweat. It is not a high-throughput part — you are not running complex DSP or heavy protocol stacks on it. The 12-bit ADC with 25 channels and a single 12-bit DAC cover analog front-end needs for multi-sensor acquisition in automotive or industrial feedback loops. ## NRND — where it sits in the cycle That means ST has flagged it for eventual phase-out; new BOMs should look at the STM8A successor line or a pin-compatible alternative within the STM8A family. For existing production, the part remains available through independent distribution — we source and quote it to order against an RFQ. Do not freeze a new design around this order code without a confirmed second-source or migration plan. ## Sourcing and RFQ posture","metaTitle":"ST STM8AL3138TAY 8-bit MCU, 16 MHz, 8 KB Flash, 48-LQFP","metaDescription":"STMicroelectronics STM8AL3138TAY 8-bit MCU, 16 MHz core, 8 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 48-LQFP, -40°C to 85°C. NRND — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"16MHz","Series":"STM8A","Package":"Tray","RAM Size":"2K x 8","Core Size":"8-Bit","EEPROM Size":"1K x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"41","Core Processor":"STM8A","Package / Case":"48-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 25x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM8","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1381","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/fcda9e9e20a5c37a9c561bb37d935f5e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM8AL3138TAY/alternatives.json"},"ai":{"faq":[{"question":"Is STM8AL3138TAY discontinued or obsolete?","answer":"The STM8AL3138TAY is NRND (Not Recommended for New Designs) — not yet discontinued, but ST has signaled it is on the path to end-of-life. Existing production runs can still source it through independent distribution."},{"question":"What is the replacement for STM8AL3138TAY?","answer":"No official successor order code is listed for the STM8AL3138TAY. A pin-compatible alternative within the STM8A family should be evaluated for new designs; we can assist with cross-reference validation for your specific BOM."},{"question":"What are the specifications of STM8AL3138TAY?","answer":"The STM8AL3138TAY is an 8-bit MCU with a 16 MHz STM8 core, 8 KB Flash, 2K x 8 RAM, 1K x 8 EEPROM, 41 I/O, 12-bit ADC (25 channels), 12-bit DAC, and interfaces including I²C, SPI, UART, LIN, and IrDA. It operates from 1.65 V to 3.6 V over -40°C to 85°C in a 48-LQFP package."},{"question":"What is the package/case of STM8AL3138TAY?","answer":"The STM8AL3138TAY comes in a 48-LQFP package with a 7x7 mm body, surface-mount, 41 I/O."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM8AL3138TAY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM8AL3138TAY 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}}