{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L433RCT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L433RCT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L433RCT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L433RCT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L433RCT6, STM32L4 series, 32-bit ARM Cortex-M4 MCU, 80MHz, 256KB Flash, 64K x 8 SRAM, 64-LQFP (10x10), -40°C to 85°C, 1.71V to 3.6V supply.","salesMarkdown":"## 64-LQFP — rework-friendly footprint The STM32L433RCT6: Housed in a 64-LQFP (10x10 mm) with 0.5 mm pitch, this package is a rework tech's friend. The gull-wing leads are visible under magnification, so you can inspect every joint after reflow. No hot-air risk to adjacent passives — a standard fine-tip iron or hot-air pencil lifts the part cleanly if the board needs a swap. ROHS3 compliant, so it passes European and global material restrictions without an exemption. The MCU integrates a CANbus controller for industrial fieldbus, a USB full-speed device/host, Quad-SPI for high-speed serial Flash or RAM expansion, and an SAI audio interface. ## How it compares to the STM32L151CBU6A The STM32L151CBU6A is an earlier Cortex-M3 part from the STM32L1 series, running at 32 MHz with a similar peripheral set (I²C, SPI, UART, USB) and the same 12-bit ADC/DAC resolution. The L433RCT6 more than doubles the core clock to 80 MHz and adds a floating-point unit, which matters for DSP or sensor-fusion algorithms. The L151 has fewer I/O (37 vs 52) and lacks the QSPI and SAI interfaces. If your code fits within the 32 MHz budget and you don't need the FPU, the L151 is a cost-optimized alternative; for higher throughput or audio/display work, the L433 is the right pick.","metaTitle":"STM32L433RCT6 STM32L4 MCU, 80MHz Cortex-M4, 256KB Flash","metaDescription":"STMicroelectronics STM32L433RCT6 32-bit ARM Cortex-M4 MCU at 80MHz with 256KB Flash, 64KB SRAM, industrial temp range, active production.","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":"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-LQFP","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":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.5200","priceTiers":[{"qty":1,"price":"$6.52000","currency":"USD"},{"qty":10,"price":"$5.89000","currency":"USD"},{"qty":25,"price":"$5.61640","currency":"USD"},{"qty":80,"price":"$4.87675","currency":"USD"},{"qty":230,"price":"$4.65752","currency":"USD"},{"qty":440,"price":"$4.24657","currency":"USD"},{"qty":960,"price":"$3.69863","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6e323d1827cad59f98cd5297642b464c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L433RCT6/alternatives.json"},"ai":{"faq":[{"question":"What is the equivalent or alternative for STM32L433RCT6?","answer":"A functional alternative from the STM32L1 series is the STM32L151CBU6A, which runs at 32 MHz with a Cortex-M3 core, fewer I/O (37), and no FPU or QSPI. It is not a pin-compatible drop-in but serves a similar low-power role with a smaller memory footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L433RCT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L433RCT6 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}}