{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L433CCU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L433CCU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L433CCU3","factsUrl":"https://icboms.com/api/mcp/products/STM32L433CCU3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series STM32L433CCU3, ARM Cortex-M4 32-Bit Single-Core MCU, 80 MHz, 256KB Flash, 64K x 8 RAM, 38 I/O, CANbus/I²C/SPI/USB, 48-UFQFPN (7x7), -40°C to 125°C.","salesMarkdown":"The STM32L433CCU3: The 48-UFQFPN package with exposed pad (7x7 mm) keeps the footprint tight while the thermal pad helps pull heat from the core during sustained processing. On-chip peripherals include a segment LCD driver, DMA, multiple PWMs, and a watchdog timer — enough to handle a mixed-signal control board without an external display controller or extra glue logic. The 64 KB SRAM supports two 8 KB buffers and a 16 KB RTOS heap with room for DMA descriptors. Compared to the earlier STM32L1 series (32 MHz Cortex-M3), this part roughly doubles the arithmetic throughput per clock and adds DSP instructions. The STM32L433CCU3 brings CANbus, USB, QSPI, SAI (audio), and multiple I²C/SPI/UART interfaces, plus an integrated LCD driver that supports up to 8x40 segments. Brown-out detection and a programmable watchdog are built in, so a supervisory reset IC is optional — the MCU can self-reset on a droopy rail. DMA offloads data movement, keeping the core free for control code. The STM32L4 series is a mainstream portfolio at ST, so PCNs are infrequent and second-source options within the series exist (e.g., variants with different memory or package).","metaTitle":"STM32L433CCU3 ARM Cortex-M4 MCU, 80 MHz, 256 KB Flash","metaDescription":"STM32L433CCU3 32-bit MCU with ARM Cortex-M4 core at 80 MHz, 256 KB Flash, 64 KB SRAM, wide 1.71V–3.6V supply, -40°C to 125°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":"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":"38","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b; 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 ~ 125°C (TA)","Supplier Device Package":"48-UFQFPN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.7600","priceTiers":[{"qty":1,"price":"$6.76000","currency":"USD"},{"qty":10,"price":"$6.10300","currency":"USD"},{"qty":25,"price":"$5.81880","currency":"USD"},{"qty":80,"price":"$5.05250","currency":"USD"},{"qty":230,"price":"$4.82548","currency":"USD"},{"qty":440,"price":"$4.39968","currency":"USD"},{"qty":1560,"price":"$3.83198","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6e323d1827cad59f98cd5297642b464c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L433CCU3/alternatives.json"},"ai":{"faq":[{"question":"What is a replacement for STM32L433CCU3?","answer":"Within the STM32L4 family, higher-density variants (e.g., STM32L4x5/4x7) offer more Flash/SRAM but share the same Cortex-M4 core and peripheral set. For a lower-power, lower-speed alternative, the STM32L151CBU6A (Cortex-M3, 32 MHz, 256 KB Flash) is a functional peer but requires firmware rework due to the different core architecture and clock speed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L433CCU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L433CCU3 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}}