{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L412TBY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L412TBY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L412TBY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L412TBY6TR","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L4 series, ARM Cortex-M4, 32-bit, 80 MHz, 128 KB Flash, 40K x 8 RAM, 1.71-3.6 V, -40 to 85°C, 36-WLCSP, Tape & Reel.","salesMarkdown":"The STMicroelectronics STM32L412TBY6TR is a 32-bit ARM Cortex-M4 MCU from the STM32L4 ultra-low-power series, clocked at 80 MHz with 128 KB Flash and 40 KB SRAM. The 36-ball WLCSP (2.58 x 3.07 mm) saves significant board area compared to a QFN, but requires a controlled SMT process and underfill if the board sees vibration or thermal cycling. ## Memory and peripherals — fitting the firmware and the bus The WLCSP package's solder-joint reliability at temperature extremes depends on the PCB's coefficient of thermal expansion — a board with a matched CTE or a small die-to-board ratio is recommended for repeated -40°C cycles.","metaTitle":"ST STM32L412TBY6TR ARM Cortex-M4 MCU, 80 MHz, 128 KB Flash, WLCSP-36","metaDescription":"STMicroelectronics STM32L412TBY6TR 32-bit MCU: 80 MHz Cortex-M4, 128 KB Flash, 40 KB SRAM, 1.71-3.6 V, -40 to 85°C, WLCSP-36. Active part, available to order. Request quote for cur","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR)","RAM Size":"40K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, PWM, WDT","Connectivity":"I²C, Infrared, IrDA, LINbus, Quad SPI, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"30","Core Processor":"ARM® Cortex®-M4","Package / Case":"36-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L412","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"36-WLCSP (2.58x3.07)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0877","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/59cb278680a203c58c9194c1c9266f14.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L412TBY6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the operating voltage of STM32L412TBY6TR?","answer":"The supply range is 1.71 V to 3.6 V, allowing direct battery operation from a single Li-ion cell."},{"question":"What is STM32L412TBY6TR's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock for this Cortex-M4 device in the STM32L4 series."},{"question":"What development tools are compatible with STM32L412TBY6TR?","answer":"Standard ARM Cortex-M4 toolchains work: STM32CubeIDE, Keil MDK, IAR EWARM. The ST-Link/V2 or V3 debugger connects via the SWD interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L412TBY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L412TBY6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}