{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L433RBI6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L433RBI6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L433RBI6","factsUrl":"https://icboms.com/api/mcp/products/STM32L433RBI6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L433RBI6, 32-bit ARM Cortex-M4 MCU, 80 MHz, 128 KB Flash, 64 KB SRAM, 52 I/O, USB, CAN, I²C, SPI, QSPI, 12-bit ADC/DAC, -40°C to 85°C, 64-UFBGA.","salesMarkdown":"The STM32L433RBI6 is a 32-bit ARM Cortex-M4 MCU from STMicroelectronics' STM32L4 ultra-low-power series, clocked at 80 MHz. It packs 128 KB of Flash and 64 KB of SRAM, with a rich peripheral set including USB, CAN, I²C, SPI, QSPI, and a 16-channel 12-bit ADC plus dual 12-bit DAC. ## 80 MHz Cortex-M4 — what it means for throughput The ARM Cortex-M4 core includes a single-precision FPU and DSP instructions, so the 80 MHz clock delivers real floating-point arithmetic and filter loops without a coprocessor. For a control loop or sensor fusion algorithm, that means tighter timing margins and simpler code compared to a Cortex-M3 at equivalent speed. ## Memory and connectivity for a mixed-signal node 128 KB of Flash is enough for a moderate application stack plus a bootloader; 64 KB SRAM supports multi-packet USB buffers and a few kSamples of ADC data. The 16-channel 12-bit ADC can scan analog inputs while the dual 12-bit DAC drives control outputs, all without external converters. USB, CAN, and QSPI let this MCU talk to a host controller, a fieldbus gateway, or an external Flash memory — typical for a smart actuator or data-logging terminal. The 64-UFBGA (5x5 mm) package saves board area but requires careful PCB layout for the fine-pitch balls. The STM32L433RBI6 carries an eol_hot lifecycle flag, indicating the part is approaching end-of-life. While ST lists the product status as Active, buyers should plan for a last-time-buy window and evaluate pin-compatible alternatives within the STM32L4 family for long-term BOM stability.","metaTitle":"ST STM32L433RBI6 ARM Cortex-M4 MCU, 80 MHz, 128 KB Flash, 64-UFBGA","metaDescription":"STMicroelectronics STM32L433RBI6 32-bit MCU with ARM Cortex-M4 core at 80 MHz, 128 KB Flash, 64 KB SRAM, USB, CAN, 12-bit ADC/DAC, -40°C to 85°C. Sourced to order — RFQ for current","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":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, LCD, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, 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; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L433","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":"$3.8996","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6e323d1827cad59f98cd5297642b464c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L433RBI6/alternatives.json"},"ai":{"faq":[{"question":"What is the operating temperature range for STM32L433RBI6?","answer":"The STM32L433RBI6 is rated for -40°C to 85°C, covering industrial and outdoor applications."},{"question":"Does STM32L433RBI6 have USB connectivity?","answer":"Yes, the STM32L433RBI6 includes USB connectivity as part of its peripheral set, alongside CAN, I²C, SPI, QSPI, and UART/USART interfaces."},{"question":"What is the datasheet for STM32L433RBI6?","answer":"The datasheet for STM32L433RBI6 is available from STMicroelectronics for the STM32L4 series; the base product number is STM32L433."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L433RBI6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L433RBI6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T18:12:59.411Z","lastPublished":"2026-07-11T18:12:59.411Z","indexable":true}}