{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G491CEU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G491CEU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G491CEU3","factsUrl":"https://icboms.com/api/mcp/products/STM32G491CEU3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G491CEU3, STM32G4 series, 32-bit ARM Cortex-M4 MCU, 170 MHz, 512 KB Flash, 112 KB SRAM, 42 I/O, 19x12b ADC, 4x12b DAC, -40°C to 125°C, 48-UFQFPN (7x7 mm).","salesMarkdown":"## 170 MHz Cortex-M4 with mixed-signal peripherals — the G4 mid-density workhorse The STM32G491CEU3: It targets real-time control applications — motor drives, digital power supplies, and industrial sensors — where the combination of a floating-point unit, a 19-channel 12-bit SAR ADC, and a four-channel 12-bit DAC reduces external analog components. ## Peripheral set — CAN, USB, QSPI, and multiple serial interfaces The QSPI interface supports external Flash or RAM expansion for data logging or over-the-air staging. The USB peripheral handles device-mode communication without an external PHY on the full-speed lines. For multi-protocol gateway designs, the three UART/USART channels and one CANbus node cover most industrial bus bridging needs. ## Package and thermal — 48-UFQFPN with exposed pad The 42 available I/Os are enough for sensor-fusion or motor-control feedback lines without needing a larger package. ## Lifecycle — active, no end-of-life concern for new designs For a production BOM, this means no immediate risk of obsolescence-driven redesign.","metaTitle":"STM32G491CEU3 ARM Cortex-M4 MCU, 170 MHz, 512 KB Flash","metaDescription":"STMicroelectronics STM32G491CEU3 32-bit MCU: ARM Cortex-M4 at 170 MHz, 512 KB Flash, 112 KB SRAM, 19-ch 12-bit ADC, -40°C 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":"Bulk","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":"42","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 19x12b SAR; D/A 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"48-UFQFPN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.0477","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/402d6026ee008535da950a87d7b9c5c0.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum operating frequency of STM32G491CEU3?","answer":"The core runs at 170 MHz, which is the maximum clock speed for this part."},{"question":"Can STM32G491CEU3 be used as a replacement for STM32G491CEU6?","answer":"The STM32G491CEU6 is the same die in a different package variant (UFQFPN-48 with a different temperature suffix). Functionally they are identical, but verify the temperature grade matches your application before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G491CEU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G491CEU3 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:53:08.628Z","lastPublished":"2026-07-16T12:53:08.628Z","indexable":true}}