{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L451CCU3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L451CCU3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L451CCU3TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L451CCU3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series, ARM Cortex-M4 32-bit MCU, 80 MHz, 256 KB Flash, 160 KB SRAM, 38 I/O, CANbus/I²C/SPI/UART, 1.71V-3.6V, -40°C to 125°C, 48-UFQFN exposed pad.","salesMarkdown":"## 256 KB Flash and 160 KB SRAM — sizing the firmware budget The STM32L451CCU3TR: The 256 KB Flash and 160 KB SRAM support moderate firmware and data buffers. ## Connectivity and analog — what is on the peripheral bus The MCU includes CANbus, I²C, SPI, UART/USART, QSPI, and SAI interfaces, plus a 12-bit ADC with 10 channels and a 12-bit DAC. The QSPI interface can map an external Flash or RAM into the memory space, useful for data logging or code shadowing. The brown-out detect and watchdog peripherals are standard for safety-conscious designs. ## Package and footprint — 48-UFQFN with exposed pad Housed in a 48-UFQFN exposed-pad package (7x7 mm), this MCU is a surface-mount device with 38 I/O lines.","metaTitle":"STM32L451CCU3TR ARM Cortex-M4 MCU, 80 MHz, 256 KB Flash","metaDescription":"STMicroelectronics STM32L451CCU3TR 32-bit ARM Cortex-M4 MCU, 80 MHz core, 256 KB Flash, 160 KB SRAM, -40 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":"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, QSPI, SAI, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"38","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 1x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L451","Program Memory Size":"256KB (256K 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":"$3.7854","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0661af420d754d37ee77b070d7d5943e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32L451CCU3TR compatible with STM32L452?","answer":"The STM32L452 is a higher-density sibling in the same STM32L4 family, typically offering more Flash or SRAM. The two are pin-compatible across the 48-pin UFQFPN package option, so a board designed for the L451 can accept the L452 with a firmware change. Verify the exact memory and peripheral differences in the datasheet before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L451CCU3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L451CCU3TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:45:04.796Z","lastPublished":"2026-07-16T12:45:04.796Z","indexable":true}}