{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L452REY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L452REY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L452REY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L452REY6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L452REY6TR, STM32L4 series, 32-bit ARM Cortex-M4 MCU, 80 MHz, 512KB Flash, 160KB RAM, 1.71V–3.6V supply, 52 I/O, 64-WLCSP, -40°C to 85°C.","salesMarkdown":"It targets designs that need a DSP-capable core and a rich peripheral set — CAN, USB, QSPI, SAI, multiple UART/SPI/I²C — while keeping the power budget tight enough for battery operation. The 64-WLCSP (3.36 x 3.66 mm) is a fine-pitch wafer-level chip-scale package — board design needs controlled impedance and a clean solder-paste stencil; rework requires a hot-air profile matched to the 0.4 mm ball pitch. ## Connectivity and peripheral headroom The QSPI interface can map an external Flash or PSRAM into the memory map, useful for code shadowing or data logging beyond the on-chip 512 KB. Brown-out detect and a watchdog are included for fail-safe operation.","metaTitle":"STM32L452REY6TR STM32L4 MCU, ARM Cortex-M4, 80 MHz","metaDescription":"STMicroelectronics STM32L452REY6TR 32-bit ARM Cortex-M4 MCU, 80 MHz, 512KB Flash, 160KB RAM, 64-WLCSP. Industrial temp range. Active lifecycle.","metaKeywords":null},"attributes":{"series":"STM32L4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"80MHz","Series":"STM32L4","Package":"Tape & Reel (TR) Cut Tape (CT)","RAM Size":"160K 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, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"52","Core Processor":"ARM® Cortex®-M4","Package / Case":"64-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L452","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-WLCSP (3.36x3.66)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.9800","priceTiers":[{"qty":1,"price":"$7.98000","currency":"USD"},{"qty":10,"price":"$7.21100","currency":"USD"},{"qty":25,"price":"$6.87560","currency":"USD"},{"qty":100,"price":"$5.97000","currency":"USD"},{"qty":250,"price":"$5.70164","currency":"USD"},{"qty":500,"price":"$5.19856","currency":"USD"},{"qty":1000,"price":"$4.52777","currency":"USD"},{"qty":5000,"price":"$4.19238","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cad9ed35fe76f9279f9f7119d5fb8f94.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L452REY6TR/alternatives.json"},"ai":{"faq":[{"question":"Is STM32L452REY6TR suitable for battery-powered applications?","answer":"Yes. The wide supply range down to 1.71 V and the STM32L4 ultra-low-power architecture make it a strong fit for battery-operated designs. The 80 MHz Cortex-M4 core provides enough throughput for sensor fusion and wireless protocol stacks while keeping active current low."},{"question":"Are there any direct alternatives to STM32L452REY6TR?","answer":"The STM32L151CBU6A is a lower-performance sibling — 32 MHz Cortex-M3, 32-bit, with similar peripheral set but no DSP extension and less RAM. It is not a pin-compatible drop-in; the package and memory map differ. For a closer functional match within the STM32L4 family, consider the STM32L452REI6 (same core, Flash, and RAM in a different package variant)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L452REY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L452REY6TR 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}}