{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32G491REI6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32G491REI6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32G491REI6","factsUrl":"https://icboms.com/api/mcp/products/STM32G491REI6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32G4 series, STM32G491REI6, 32-bit ARM Cortex-M4F MCU, 170 MHz, 512 KB Flash, 112K x 8 RAM, 52 I/O, CANbus/I2C/SPI/USART/USB, 24x12b ADC, 4x12b DAC, -40°C to 85°C, 64-UFBGA (5x5 mm), Tray.","salesMarkdown":"The 170 MHz clock is the headline number, but the practical gain comes from the Cortex-M4F's DSP extensions and single-cycle MAC. If your firmware runs a PID loop or a floating-point filter, this core saves you the cycle-count gymnastics an M3 or M0+ would need. The 112 KB SRAM gives enough headroom for two 256-point FFT buffers plus the control stack. ## Analog peripherals: 24-channel ADC, 4-channel DAC Twenty-four 12-bit ADC channels and four 12-bit DAC channels are on-chip. For a mixed-signal design like a three-phase motor controller with current sensing on all legs plus a DAC output for an analog reference, you can keep the bill of materials tight — no external ADC or DAC needed. The ADC can sample multiple channels in sequence without CPU intervention via the DMA engine listed in the peripherals block. ## 64-UFBGA 5x5 mm — layout and rework notes The 52 I/O count in this package gives enough GPIO for a CAN node with a parallel LCD or a sensor array, but every pin is committed; there's no room for a spare. On the connectivity side: CANbus, I2C, SPI, UART/USART, and USB are all present, along with SAI for audio serial interfaces and IrDA/IRTIM for infrared. The Brown-out Detect/Reset, POR, and WDT are standard safety peripherals for industrial environments. It fits factory automation, outdoor telecom cabinets, and HVAC controllers.","metaTitle":"STM32G491REI6 MCU, ARM Cortex-M4F 170 MHz, 512 KB Flash","metaDescription":"STMicroelectronics STM32G491REI6 32-bit MCU with 170 MHz ARM Cortex-M4F, 512 KB Flash, 112 KB SRAM, 24-ch 12-bit ADC, 4-ch 12-bit DAC, 64-UFBGA. Active product.","metaKeywords":null},"attributes":{"series":"STM32G4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"170MHz","Series":"STM32G4","Package":"Tray","RAM Size":"112K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT","Connectivity":"CANbus, I2C, IrDA, IRTIM, LINbus, SAI, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M4F","Package / Case":"64-UFBGA","Product Status":"Active","Data Converters":"A/D 24x12b; D/A 4x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32G491","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-UFBGA (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.0200","priceTiers":[{"qty":1,"price":"$9.02000","currency":"USD"},{"qty":10,"price":"$8.14800","currency":"USD"},{"qty":25,"price":"$7.76880","currency":"USD"},{"qty":80,"price":"$6.74550","currency":"USD"},{"qty":230,"price":"$6.44235","currency":"USD"},{"qty":490,"price":"$5.87392","currency":"USD"},{"qty":980,"price":"$5.11599","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/475873daeb61e31a5487d47a07b785e4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32G491REI6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32G491REI6 and STM32G491RET6?","answer":"The STM32G491REI6 comes in a 64-UFBGA package (5x5 mm, 0.5 mm pitch), while the STM32G491RET6 uses an LQFP-64 package with gull-wing leads. The BGA variant saves board area but requires reflow soldering and X-ray inspection; the LQFP is easier to hand-assemble and inspect. All other specs — 170 MHz Cortex-M4F, 512 KB Flash, 112 KB SRAM, analog peripherals — are identical."},{"question":"What development boards use the STM32G491REI6?","answer":"STMicroelectronics offers the NUCLEO-G491RE and STM32G491E-EVAL evaluation boards for the STM32G491 series. These boards provide access to all peripherals and are supported by STM32CubeIDE for firmware development."},{"question":"Can I use STM32G491REI6 with STM32CubeIDE?","answer":"Yes, STM32CubeIDE fully supports the STM32G491 series, including the STM32G491REI6. The IDE provides project templates, peripheral configuration via CubeMX, and debug support through the SWD interface on the 64-UFBGA package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32G491REI6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32G491REI6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}