{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G431CBT3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G431CBT3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G431CBT3","factsUrl":"https://icboms.com/api/mcp/products/STM32G431CBT3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G4 series, STM32G431CBT3, 32-bit ARM Cortex-M4 MCU, 170 MHz, 128KB Flash, 32K x 8 RAM, CANbus, I²C, SPI, UART/USART, 38 I/O, 48-LQFP, -40 to 125 °C.","salesMarkdown":"## 170 MHz — what the core speed buys you For a field-oriented motor controller or a digital PFC stage, that clock headroom means you can run the control algorithm at higher PWM update rates without dropping into assembly. The 128 KB Flash is enough for a modest RTOS plus application code, though firmware teams should budget for the 32K x 8 SRAM when planning data buffers. The base product number STM32G431 covers a range of Flash and RAM density options in the same 48-LQFP footprint, so if firmware grows later, a pin-compatible drop-in with more memory exists within the family. ## 48-LQFP — field-swappable and rework-friendly The 48-LQFP (7x7 mm) package is a standard gull-wing leaded part. You can hand-solder it with a fine-tip iron and some flux wick — no hot-air station required. That matters if you are doing prototype rework or field repairs where the ESD bench is the tailgate of a van. The 38 I/O pins give enough GPIO for a sensor array or a small display interface without needing a bigger package.","metaTitle":"STM32G431CBT3 STM32G4 ARM Cortex-M4 MCU, 170MHz, 128KB Flash","metaDescription":"STMicroelectronics STM32G431CBT3 32-bit ARM Cortex-M4 MCU at 170MHz with 128KB Flash, 32K x 8 RAM, 17x12b ADC, 4x12b DAC. Active lifecycle.","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":"38","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-LQFP","Product Status":"Active","Data Converters":"A/D 17x12b; 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":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.4997","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 STM32G431CBT3 in this component family?","answer":"Within the STM32G431 base product number, the STM32G431C6T6 offers a lower Flash and RAM density in the same 48-LQFP footprint. The C6T6 variant has 32 KB Flash versus the 128 KB on the CBT3, but shares the same pinout, peripherals, and 170 MHz core speed. For a firmware migration or a cost-down BOM, the swap is mechanical — just update the linker script."},{"question":"What development tools and IDEs support STM32G431CBT3?","answer":"The STM32G4 series is supported by STMicroelectronics' STM32CubeIDE, ARM Keil MDK, IAR Embedded Workbench, and the GCC toolchain via STM32CubeMX for pin/clock configuration. The SWD debug interface on the 48-LQFP package works with standard J-Link and ST-Link probes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G431CBT3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G431CBT3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:34:13.798Z","lastPublished":"2026-07-16T13:34:13.798Z","indexable":true}}