{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L431CCT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L431CCT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L431CCT6","factsUrl":"https://icboms.com/api/mcp/products/STM32L431CCT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series STM32L431CCT6, ARM Cortex-M4 32-Bit MCU, 80MHz, 256KB Flash, 64K x 8 SRAM, 48-LQFP, -40°C~85°C, 1.71V~3.6V.","salesMarkdown":"## 80 MHz Cortex-M4 with 256 KB Flash — mid-range STM32L4 for industrial and battery-edge designs The 48-LQFP package gives access to 39 I/Os, and the peripheral set includes CANbus, multiple I²C and SPI interfaces, QSPI, SAI, and a 12-bit ADC with 10 channels plus two 12-bit DACs. Typical applications span industrial sensor nodes, portable instrumentation, motor-control interfaces, and IoT edge devices where the balance of compute throughput and active-mode power matters. ## What the 80 MHz core and memory map mean for the BOM decision The 64 KB SRAM (organized as 64K x 8) supports a few hundred bytes of frame buffer or a moderate data logger. If your firmware image and heap fit within these boundaries, this part avoids the cost uplift of the larger Flash siblings. For a production BOM, this means no forced last-time-buy window to manage and no urgent need to qualify a second source — though the STM32L433 (with its extra 16 KB SRAM and AES accelerator) is a pin-compatible drop-in if the project later needs those blocks. The active status also keeps the part available through franchised distribution channels, which simplifies the audit trail for quality-sensitive builds. ## Industrial temperature grade and 48-LQFP footprint The 48-LQFP package with a 7x7 mm body and 0.5 mm pitch is a common footprint that reflows easily and is inspectable without X-ray.","metaTitle":"STM32L431CCT6 STMicroelectronics ARM Cortex-M4 MCU, 80 MHz","metaDescription":"STM32L431CCT6 32-bit MCU with 256 KB Flash, 64 KB SRAM, 80 MHz ARM Cortex-M4, 48-LQFP, -40°C to 85°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":"Tray","RAM Size":"64K 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, SWPMI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"39","Core Processor":"ARM® Cortex®-M4","Package / Case":"48-LQFP","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L431","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-LQFP (7x7)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.5900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/5001c15c5be880a0e65d1dfc08e4f0cc.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the pin-compatible alternative to STM32L431CCT6?","answer":"The STM32L433CCT6 is pin-compatible in the same 48-LQFP footprint and adds 16 KB more SRAM (80 KB total) plus a hardware AES accelerator. If your firmware can use the extra memory or encryption block, it is a drop-in upgrade without a board spin. Both share the same base product number family (STM32L431 / STM32L433) and identical pinout in the 48-pin package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L431CCT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L431CCT6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:35:42.676Z","lastPublished":"2026-07-16T12:35:42.676Z","indexable":true}}