{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G431RBT3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G431RBT3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G431RBT3","factsUrl":"https://icboms.com/api/mcp/products/STM32G431RBT3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G4 series, STM32G431RBT3, 32-bit ARM Cortex-M4 single-core MCU, 170 MHz, 128 KB Flash, 32K x 8 RAM, 64-LQFP, -40°C to 125°C, 1.71 V to 3.6 V supply.","salesMarkdown":"The 170 MHz core includes a single-precision floating-point unit, so you can run PID filters, sensor fusion, or FFT stages in C without a software emulation tax. That clock rate also gives headroom for the CANbus, SPI, and UART/USART peripherals to keep up with a 10 kHz control loop while the ADC samples on a separate DMA channel — the DMA engine and the Cortex-M4 pipeline overlap without stalling the main thread. ## Supply range and power-up sequencing The brown-out detect and POR peripherals (listed in the feature set) handle the reset sequencing internally — no external supervisor needed for a single-supply design. If you are migrating from an older 5 V MCU family, note that all I/O are 3.6 V-tolerant, not 5 V; level shifters are required for legacy 5 V logic. ST lists the STM32G431RBT3 as an active product with a current lifecycle stage. For a production BOM that needs a guaranteed supply horizon of several years, this part sits in the safe zone — no forced redesign cycle from obsolescence. ## Package and rework considerations The 64-LQFP (10x10 mm body) is a hand-solderable package with 0.5 mm pitch — doable with a fine-tip iron and a steady hand, though a hot-air station makes removal cleaner. No exposed pad underneath, so the thermal path is through the leads only; for high-current I/O banks, check the per-pin current limits in the datasheet. The tray shipping medium means the parts arrive in antistatic trays, not tape-and-reel, so factor that into your pick-and-place feeder setup if you are running a high-volume line.","metaTitle":"STM32G431RBT3 ARM Cortex-M4 MCU, 170 MHz, 128 KB Flash","metaDescription":"STMicroelectronics STM32G431RBT3 32-bit ARM Cortex-M4 MCU, 170 MHz, 128 KB Flash, 32 KB RAM, 64-LQFP, -40°C to 125°C. Active lifecycle, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"170MHz","Series":"STM32G4","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, SPI, UART/USART","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 23x12b; D/A 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32G431","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8776","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/88082d99dc99f94106e4989f731259ef.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32G431RBT3?","answer":"Within the STM32G4 series, the STM32G431RBT3 sits in a density and package tier. Pin-compatible siblings with different Flash/RAM sizes exist in the same 64-LQFP footprint, but the exact memory and peripheral mix varies — confirm the alternate's feature set against your firmware and pin requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G431RBT3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G431RBT3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:29:17.648Z","lastPublished":"2026-07-16T12:29:17.648Z","indexable":true}}