{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L451CCU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L451CCU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L451CCU3","factsUrl":"https://icboms.com/api/mcp/products/STM32L451CCU3","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/USART, -40°C to 125°C, 48-UFQFN exposed pad, Tray.","salesMarkdown":"## 80 MHz Cortex-M4 with 256 KB Flash — what this means for your BOM The STM32L451CCU3 is an STMicroelectronics 32-bit MCU built around an ARM Cortex-M4 core clocked at 80 MHz, with 256 KB of Flash and 160 KB of SRAM. It sits in the STM32L4 ultra-low-power series, which means the 80 MHz clock is paired with a flexible power-management scheme — the core can run flat out for a control loop or DSP filter, then drop into a low-power sleep mode that draws microamps. For a BOM line, the 256 KB Flash / 160 KB SRAM combination is the mid-density sweet spot: enough headroom for a real-time OS or a moderate communications stack without forcing a move to a larger package or higher pin count. The 38 I/O lines, 10-channel 12-bit ADC, and single 12-bit DAC cover analog front-end needs without an external converter. Brown-out detect, reset, DMA, PWM, and watchdog timer are built in, reducing external component count.","metaTitle":"STM32L451CCU3 STM32L4 ARM Cortex-M4 MCU, 80 MHz, 256 KB Flash","metaDescription":"STMicroelectronics STM32L451CCU3 32-bit MCU, ARM Cortex-M4 at 80 MHz, 256 KB Flash, 160 KB SRAM, -40°C to 125°C, 48-UFQFN. Active production, available to order.","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":"Tray","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":"$6.9300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0661af420d754d37ee77b070d7d5943e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L451CCU3/alternatives.json"},"ai":{"faq":[{"question":"What is the exact package and pinout of STM32L451CCU3?","answer":"The STM32L451CCU3 is supplied in a 48-UFQFN exposed pad package (7x7 mm body). The supplier device package is 48-UFQFPN. Pinout details are in the STM32L4 reference manual; the 38 I/O lines include the standard STM32L4 peripheral mapping."},{"question":"What is the operating temperature range of STM32L451CCU3?","answer":"The operating temperature range is -40°C to 125°C (TA), qualifying it for automotive and industrial environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L451CCU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L451CCU3 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}}