{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L433RBY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L433RBY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L433RBY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L433RBY6TR","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L4 series, ARM Cortex-M4 32-bit MCU, 80MHz, 128KB Flash, 64KB RAM, CANbus, USB, I²C, SPI, 52 I/O, 64-WLCSP, -40 to 85°C.","salesMarkdown":"The STM32L433RBY6TR is an STMicroelectronics 32-bit ARM Cortex-M4 MCU clocked at 80 MHz, with 128 KB of Flash and 64 KB of RAM. It belongs to the STM32L4 series. ## What the 80 MHz and 128 KB Flash mean for your firmware budget The 80 MHz Cortex-M4 handles real-time control loops without needing a separate DSP. The 128 KB Flash supports a FreeRTOS-based application with a USB stack and CANopen protocol. ## Peripherals and integration note The 16-channel 12-bit ADC and dual 12-bit DAC cover analog front-end needs.","metaTitle":"ST STM32L433RBY6TR ARM Cortex-M4 MCU, 80MHz, 128KB Flash","metaDescription":"STMicroelectronics STM32L433RBY6TR 32-bit MCU, 80MHz Cortex-M4, 128KB Flash, 64KB RAM, -40 to 85°C, 64-WLCSP. Active production. Sourced to order against RFQ.","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":"Tape & Reel (TR) Cut Tape (CT)","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, WLCSP","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-WLCSP (3.14x3.13)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.8200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6e323d1827cad59f98cd5297642b464c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L433RBY6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the pinout of STM32L433RBY6TR?","answer":"The 64-WLCSP pinout follows the STM32L433 standard ball map. The datasheet (available from ST) shows the full pin assignment; key signals include the 52 GPIOs, the 16 ADC inputs on Port A/B/C, and the CAN/USB/I²C/SPI pins multiplexed across Port A and B."},{"question":"Does STM32L433RBY6TR support USB and CAN?","answer":"Yes, the connectivity block includes both a full-speed USB device interface and a CAN 2.0B controller. They share pins with other peripherals, so check the pin mux in the datasheet before laying out the board."},{"question":"What are the alternatives to STM32L433RBY6TR?","answer":"Within the STM32L4 series, pin-compatible WLCSP variants with larger Flash (256 KB or 512 KB) are available — for example, the STM32L443 or STM32L4R5 families. No direct second-source from another manufacturer exists."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L433RBY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L433RBY6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T10:39:33.080Z","lastPublished":"2026-07-16T10:39:33.080Z","indexable":true}}