{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G491CCT3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G491CCT3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G491CCT3TR","factsUrl":"https://icboms.com/api/mcp/products/STM32G491CCT3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G4 series, ARM Cortex-M4 32-bit MCU, 170MHz, 256KB Flash (256K x 8), 112K x 8 RAM, 48-LQFP (7x7), -40 to 125 °C, Tape & Reel.","salesMarkdown":"The STM32G491CCT3TR is an STMicroelectronics 32-bit MCU built around the ARM Cortex-M4 core with FPU, running at 170 MHz. The 48-LQFP package (7x7 mm) keeps the board footprint compact and is hand-solderable with a decent hot-air station, though the exposed pad underneath wants a via stitch for thermal relief if the core runs sustained loads above 100 mA. ## Peripheral set — CAN, QSPI, high-resolution timers Connectivity includes CANbus, I²C, SPI, UART/USART, USB, and QSPI — the latter useful for memory-mapped external Flash or PSRAM expansion. The 18-channel 12-bit SAR ADC and four 12-bit DACs cover multi-axis analog feedback without external muxing. Brown-out detect, POR, and a windowed watchdog are on-die, so a simple external supervisor is optional. For firmware bring-up, SWD stays alive even with the watchdog armed, and the internal oscillator lets the chip run before the external crystal is fitted. Listed as Active by STMicroelectronics. The Tape & Reel variant (TR suffix) is the standard production reel; the tray variant (T3 suffix) is also available for prototype or low-volume builds.","metaTitle":"STM32G491CCT3TR 32-bit ARM Cortex-M4 MCU, 170 MHz","metaDescription":"STMicroelectronics STM32G491CCT3TR 32-bit MCU with ARM Cortex-M4 core at 170 MHz, 256 KB Flash, 112 KB RAM, 48-LQFP, -40 to 125 °C.","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":"Tape & Reel (TR)","RAM Size":"112K x 8","Core Size":"32-Bit","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, QSPI, SAI, SPI, 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 18x12b SAR; D/A 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"256KB (256K 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":"$4.0771","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/402d6026ee008535da950a87d7b9c5c0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32G491CCT3TR obsolete?","answer":"No. The lifecycle status is Active per STMicroelectronics. No discontinuation notice or last-time-buy date has been issued."},{"question":"What is the operating temperature of STM32G491CCT3TR?","answer":"This covers industrial, automotive under-hood, and outdoor telecom environments without derating."},{"question":"What is the closest pin-compatible alternative to STM32G491CCT3TR?","answer":"The STM32G491CCT6 is the same die in a tray package (48-LQFP) with identical Flash and RAM sizes. The only difference is the shipping medium — T6 is tray, TR is tape-and-reel. Pin-compatible, functionally identical, and a direct second source for dual-sourcing or supply flexibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G491CCT3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G491CCT3TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:32:13.266Z","lastPublished":"2026-07-16T12:32:13.266Z","indexable":true}}