{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L412RBI6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L412RBI6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L412RBI6","factsUrl":"https://icboms.com/api/mcp/products/STM32L412RBI6","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L4 series, ARM Cortex-M4, 32-Bit Single-Core, 80MHz, 128KB Flash, 40K x 8 RAM, 64-UFBGA, -40°C to 85°C.","salesMarkdown":"## What this STM32L412RBI6 brings to the board The 80 MHz core speed is the headline differentiator against the earlier STM32L1 series (which tops out at 32 MHz). For a control loop or a real-time data pipeline, that extra clock headroom translates to tighter timing margins — you can run a PID loop at several kHz and still have cycles left for communication stack processing. The Cortex-M4 includes a single-cycle multiply and a hardware FPU, so floating-point sensor math doesn't stall the pipeline. If your firmware does any DSP-style filtering or FFT work, this core handles it without a separate coprocessor. ## Memory sizing: 128 KB Flash, 40 KB SRAM The Flash is enough for a FreeRTOS-based application with a USB stack, a couple of communication protocols, and moderate application logic. The 40 KB SRAM gives room for a few large buffers — useful for USB packet handling or a display frame buffer at modest resolution. If your firmware needs more than that, the Quad SPI interface lets you attach external PSRAM or Flash without chewing up general-purpose I/Os. ## Package and assembly: 64-UFBGA (5x5 mm) That's a fine-pitch BGA — not something you swap in the field with a soldering iron. It needs a controlled reflow profile, X-ray inspection after assembly, and a stencil designed for the ball pattern. The upside is a very compact footprint for a 52-I/O part, which helps when board space is tight. ## Supply voltage and power management That flexibility simplifies the power tree in battery-powered designs — no boost converter needed. The STM32L4 series is known for its low-power modes (stop-mode current in the microamp range), though the exact numbers aren't in this evidence. If your design spends most of its time sleeping and wakes briefly to process a sensor readout, this MCU family is built for that duty cycle. ST's STM32L4 series is a mainstream portfolio, so supply through the independent distribution channel is generally stable.","metaTitle":"STM32L412RBI6 STM32L4 MCU, ARM Cortex-M4, 80 MHz","metaDescription":"STM32L412RBI6 is a 32-bit ARM Cortex-M4 MCU from STMicroelectronics, 80 MHz, 128 KB Flash, 40 KB SRAM, 52 I/O, 64-UFBGA. Industrial temp -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tray","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":"52","Core Processor":"ARM® Cortex®-M4","Package / Case":"64-UFBGA","Product Status":"Active","Data Converters":"A/D 16x12b","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":"64-UFBGA (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.5300","priceTiers":[{"qty":1,"price":"$5.53000","currency":"USD"},{"qty":10,"price":"$4.96900","currency":"USD"},{"qty":25,"price":"$4.69720","currency":"USD"},{"qty":80,"price":"$4.07100","currency":"USD"},{"qty":230,"price":"$3.86217","currency":"USD"},{"qty":490,"price":"$3.46553","currency":"USD"},{"qty":980,"price":"$2.92273","currency":"USD"},{"qty":2450,"price":"$2.77660","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/29c67a23670ccb2896e9a199ceccf40c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L412RBI6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32L412RBI6 and STM32L412RBT6?","answer":"Both are STM32L4-series parts with the same core, memory, and peripheral set. The difference is the package: the RBI6 variant comes in a 64-UFBGA, while the RBT6 uses a 64-LQFP. The UFBGA is smaller (5x5 mm) but requires a reflow oven and X-ray inspection; the LQFP is easier to hand-solder and inspect visually."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L412RBI6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L412RBI6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}