{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L433CBT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L433CBT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L433CBT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L433CBT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series STM32L433CBT6, ARM Cortex-M4 32-bit MCU, 80MHz, 128KB Flash, 64KB SRAM, 48-LQFP, -40°C to 85°C.","salesMarkdown":"## 80 MHz Cortex-M4 — the performance tier that matters The core includes a single-precision floating-point unit, so control loops with PID or sensor fusion math run in hardware rather than emulated in software. This is the mid-density entry in the STM32L4 series, aimed at applications that need the M4's DSP and FPU throughput but don't require the 512 KB or 1 MB Flash tiers that drive up BOM cost. The part provides 38 GPIOs in the 48-LQFP package, along with a 10-channel 12-bit ADC and a 2-channel 12-bit DAC for analog signal chains. The QSPI interface is worth noting — it allows a direct-mapped external Flash or PSRAM for code execution or data logging without bit-banging. Peripheral integration also covers brown-out detect and reset, DMA, an LCD segment driver, PWM, and a watchdog timer. ## Supply range and power profile The STM32L4 family is ST's ultra-low-power line, so this part includes multiple low-power modes (sleep, stop, standby) that draw microamps in the deepest sleep states. Housed in a 48-LQFP with a 7x7 mm body, the part is surface-mount and hand-solderable for prototype runs. The 48-pin LQFP is a common footprint shared across the STM32L4 density options, so a board laid out for the 128 KB variant can accept the 256 KB or 512 KB siblings without a PCB change. It is ROHS3 compliant.","metaTitle":"STM32L433CBT6 MCU, ARM Cortex-M4 80MHz, 128KB Flash, 48-LQFP","metaDescription":"STMicroelectronics STM32L433CBT6 32-bit MCU with ARM Cortex-M4 at 80MHz, 128KB Flash, 64KB SRAM, 48-LQFP. Active lifecycle, industrial temp.","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-LQFP","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":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.1800","priceTiers":[{"qty":1,"price":"$7.18000","currency":"USD"},{"qty":10,"price":"$6.45200","currency":"USD"},{"qty":25,"price":"$6.09920","currency":"USD"},{"qty":80,"price":"$5.28613","currency":"USD"},{"qty":230,"price":"$5.01504","currency":"USD"},{"qty":440,"price":"$4.50000","currency":"USD"},{"qty":1500,"price":"$3.79517","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/6e323d1827cad59f98cd5297642b464c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L433CBT6/alternatives.json"},"ai":{"faq":[{"question":"What are the alternatives to STM32L433CBT6?","answer":"The closest functional peer within ST's portfolio is the STM32L151CBU6A, which runs a Cortex-M3 core at 32 MHz and offers similar peripheral integration (I²C, SPI, UART, USB) but lacks the Cortex-M4 FPU and the 80 MHz clock speed. The STM32L151 is a lower-performance, lower-cost option if DSP and floating-point math are not required. For a pin-compatible upgrade within the same STM32L4 series, the 256 KB and 512 KB Flash variants share the same 48-LQFP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L433CBT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L433CBT6 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}}