{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L452REY6PTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L452REY6PTR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L452REY6PTR","factsUrl":"https://icboms.com/api/mcp/products/STM32L452REY6PTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM Cortex-M4 32-bit MCU, 80 MHz, 512 KB Flash, 160 KB SRAM, 52 I/O, CANbus/I²C/SPI/USB, 64-WLCSP, -40 to 85°C.","salesMarkdown":"## 80 MHz Cortex-M4 with 512 KB Flash in a 3.36×3.66 mm WLCSP The STM32L452REY6PTR: Connectivity covers CANbus, I²C, SPI, UART/USART, USB, QSPI, and SAI — enough for industrial fieldbus bridging or audio codec interfaces. The 52 I/O lines and 16-channel 12-bit ADC give it the analog front-end reach for multi-sensor acquisition. The 160 KB SRAM leaves headroom for double-buffered ADC data and a modest RTOS heap. If your algorithm needs floating-point throughput, the M4 FPU is there; if it doesn't, the 80 MHz still beats a Cortex-M3 at the same clock on integer tasks. The internal oscillator and brown-out detect keep it running through supply dips without an external supervisor.","metaTitle":"STM STM32L452REY6PTR ARM Cortex-M4 MCU, 80 MHz, 512 KB Flash","metaDescription":"STMicroelectronics STM32L452REY6PTR 32-bit ARM Cortex-M4 MCU, 80 MHz, 512 KB Flash, 160 KB SRAM, 64-WLCSP, -40 to 85°C. End-of-life; sourced to order against RFQ.","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":"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":"$4.1924","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cad9ed35fe76f9279f9f7119d5fb8f94.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L452REY6PTR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L452REY6PTR?","answer":"ST's STM32L4 series includes pin-compatible density variants (e.g., STM32L452RE with different Flash/RAM sizes). Verify the exact footprint and firmware memory map before substituting, as the WLCSP ball-out may differ across the family."},{"question":"What is STM32L452REY6PTR's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock for this STM32L4 device."},{"question":"What is STM32L452REY6PTR's listed series?","answer":"It belongs to the STM32L4 series, ST's ultra-low-power ARM Cortex-M4 family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L452REY6PTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L452REY6PTR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-11T18:12:59.411Z","lastPublished":"2026-07-11T18:12:59.411Z","indexable":true}}