{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L471RET3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L471RET3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L471RET3TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L471RET3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, STM32L471RET3TR, 32-bit ARM Cortex-M4 MCU, 80MHz, 512KB Flash, 128K x 8 RAM, CANbus, I²C, SPI, QSPI, UART/USART, 51 I/O, 1.71V~3.6V, -40°C~125°C, 64-LQFP, Tape & Reel.","salesMarkdown":"## Active production — no near-term EOL risk The STM32L471RET3TR: This is the baseline for any new design: you can commit the BOM line without a last-time-buy clock ticking. This is an STMicroelectronics STM32L471RET3TR, a 32-bit ARM Cortex-M4 single-core MCU from the STM32L4 ultra-low-power series. The 128 KB SRAM gives enough workspace for double-buffered sensor data or a modest TCP/IP buffer pool. ## Peripheral set — CAN, QSPI, SAI, and a dozen serial interfaces Connectivity covers CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, and UART/USART. The QSPI interface is useful for memory-mapped external Flash or RAM without chewing up GPIO. The SAI (serial audio interface) handles I²S audio codecs or time-division multiplexed data streams. With 51 general-purpose I/O in a 64-LQFP package, you get a reasonable pin count for a mixed-signal control board without the routing complexity of a larger BGA. On-chip data converters include a 16-channel 12-bit ADC and a 2-channel 12-bit DAC, enough for analog sensor readout and closed-loop analog output without external converters. ## Package and supply — 64-LQFP, Tape & Reel The STM32L471RET3TR comes in a 64-LQFP package with a 10x10 mm body, surface-mount. If your line runs tubes or trays, the base part number STM32L471RET6 (without the TR suffix) is the tray variant; verify availability separately. The 64-LQFP footprint is a common, low-cost package with a 0.5 mm pitch — easy to route on a two-layer board and reworkable with a hot-air station.","metaTitle":"STM32L471RET3TR ARM Cortex-M4 MCU, 80 MHz, 512 KB Flash","metaDescription":"STMicroelectronics STM32L471RET3TR 32-bit ARM Cortex-M4 MCU, 80 MHz core, 512 KB Flash, 128 KB SRAM, -40 to 125°C, 64-LQFP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR)","RAM Size":"128K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"51","Core Processor":"ARM® Cortex®-M4","Package / Case":"64-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L471","Program Memory Size":"512KB (512K 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":"$6.9015","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a8bdd65b87cb8aa084c5e1f90ea16523.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32L471RET3TR available in tape and reel packaging only?","answer":"The STM32L471RET3TR suffix \"TR\" indicates Tape & Reel packaging. The same die in a tray or tube is the STM32L471RET6 variant — check the base part number STM32L471 for alternate packaging options."},{"question":"Can STM32L471RET3TR be used as a drop-in replacement for STM32L476?","answer":"The STM32L471RET3TR is pin-compatible with the STM32L476 in the same 64-LQFP package, but the L476 offers up to 1 MB Flash and additional features like a TFT-LCD controller. For a drop-in replacement, confirm that your firmware does not rely on the extra peripherals and that the Flash/RAM footprint fits within 512 KB / 128 KB. The L471 is a cost-optimized sibling — not a direct superset."},{"question":"What is STM32L471RET3TR's listed speed?","answer":"The core runs at 80 MHz."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L471RET3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L471RET3TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:48:20.873Z","lastPublished":"2026-07-16T12:48:20.873Z","indexable":true}}