{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L432KBU6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L432KBU6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L432KBU6","factsUrl":"https://icboms.com/api/mcp/products/STM32L432KBU6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series ARM Cortex-M4 MCU, STM32L432KBU6, 80 MHz, 128 KB flash, 64 KB RAM, 32-UFQFPN 5x5 mm, -40 to 85°C.","salesMarkdown":"## Memory budget and peripheral set The STM32L432KBU6: 128 KB of program flash and 64 KB of SRAM give this MCU enough headroom for a real-time operating system, a USB stack, and a moderate application payload without external memory. The 80 MHz Cortex-M4 with single-cycle multiply and floating-point unit handles signal processing loops that would stall a Cortex-M3. Connectivity includes CANbus, USB, I²C, SPI, QSPI, SAI (serial audio interface), and UART/USART with LIN and IrDA support. The QSPI interface lets you attach external flash or RAM for data logging or over-the-air update staging without bit-banging. The 10-channel 12-bit ADC and dual 12-bit DAC serve analog front-ends — sensor conditioning, audio output, or control-loop feedback. With 26 I/O lines in a 32-pin package, every pin carries multiple multiplexed functions. The peripheral allocation needs careful mapping early in the design — you cannot run all interfaces simultaneously on this pin count. The datasheet's thermal resistance figures assume a specific PCB copper area; a layout without the pad connected will hit the 85°C limit sooner under continuous load. ## Compliance and sourcing posture ROHS3 compliant per — no regulatory restriction for EU or global markets. Sourced through authorized and independent distribution channels.","metaTitle":"STM32L432KBU6 MCU, 80 MHz Cortex-M4, 128 KB Flash, 32-UFQFPN","metaDescription":"STMicroelectronics STM32L432KBU6 ARM Cortex-M4 MCU, 80 MHz, 128 KB flash, 64 KB RAM, 32-UFQFPN 5x5 mm. Active production, ROHS3 compliant. Quoted to order.","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":"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, USB","Mounting Type":"Surface Mount","Number of I/O":"26","Core Processor":"ARM® Cortex®-M4","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L432","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.5600","priceTiers":[{"qty":1,"price":"$5.56000","currency":"USD"},{"qty":10,"price":"$4.99400","currency":"USD"},{"qty":25,"price":"$4.72080","currency":"USD"},{"qty":80,"price":"$4.09150","currency":"USD"},{"qty":230,"price":"$3.88161","currency":"USD"},{"qty":440,"price":"$3.48298","currency":"USD"},{"qty":945,"price":"$2.93744","currency":"USD"},{"qty":2940,"price":"$2.79057","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1843cc682eddd0736c1d2ccd291fb9a9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L432KBU6/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L432KBU6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L432KBU6 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}}