{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L412TBY6PTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L412TBY6PTR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L412TBY6PTR","factsUrl":"https://icboms.com/api/mcp/products/STM32L412TBY6PTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM Cortex-M4, 32-Bit Single-Core MCU, 80MHz, 128KB Flash, 40K x 8 RAM, 36-WLCSP, -40°C~85°C.","salesMarkdown":"The STM32L412TBY6PTR is an STMicroelectronics STM32L4 series microcontroller built around an ARM Cortex-M4 core running at 80 MHz. The 32-bit single-core architecture with the Cortex-M4 FPU handles sensor fusion, motor control loops, or audio processing efficiently. The 128 KB Flash is enough for a real-time operating system plus application code, while the 40K x 8 SRAM supports moderate data buffering and stack depth. For designs that outgrow this memory footprint, the STM32L4 family offers density upgrades without changing the core peripheral set. ## Industrial temperature range and connectivity On the connectivity side, it brings I²C, SPI, Quad SPI, UART/USART, LINbus, IrDA, infrared, and USB — enough for sensor hubs, display interfaces, and serial bridges. The 30 GPIOs in the 36-WLCSP package constrain board routing, so plan the pin assignment early. ## Package and assembly — 36-WLCSP The small footprint saves board area but demands careful PCB layout: fine-pitch routing, via-in-pad capability, and a solder mask defined pad. Moisture sensitivity is MSL 1 typically for WLCSP, but verify the specific bake requirements from the reel label. ## Lifecycle and sourcing posture The base product number is STM32L412, so any PCN or EOL notification from ST will reference that base.","metaTitle":"STM32L412TBY6PTR – STM32L4 ARM Cortex-M4 MCU, 80 MHz","metaDescription":"STMicroelectronics STM32L412TBY6PTR: 32-bit ARM Cortex-M4 MCU, 80 MHz core, 128 KB Flash, 40K x 8 RAM, 36-WLCSP package, -40°C to 85°C. Active lifecycle.","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":"$2.6843","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/59cb278680a203c58c9194c1c9266f14.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can STM32L412TBY6PTR be used as a replacement for STM32L412KB?","answer":"Both parts share the same STM32L412 base and core architecture, but the STM32L412KB uses a different package (LQFP32). The WLCSP package of the TBY6PTR is not pin-compatible with the LQFP — a board redesign is required. Check the memory and peripheral configuration in the respective datasheets to confirm functional equivalence."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L412TBY6PTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L412TBY6PTR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:40:06.846Z","lastPublished":"2026-07-16T12:40:06.846Z","indexable":true}}