{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L432KCU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L432KCU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L432KCU3","factsUrl":"https://icboms.com/api/mcp/products/STM32L432KCU3","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L4 series ARM Cortex-M4 MCU, STM32L432KCU3, 80 MHz, 256 KB flash, 64 KB SRAM, 32-UFQFPN 5x5 mm, -40 to +125°C.","salesMarkdown":"## 80 MHz Cortex-M4 in a 5x5 mm footprint The STM32L432KCU3 packs an ARM Cortex-M4 core running at 80 MHz into a 32-UFQFPN package measuring 5x5 mm — the smallest footprint in the STM32L4 series. This is the part to reach for when board real estate is tight but you still need a DSP-capable FPU for sensor fusion or motor-control math. The 64 KB SRAM is organised as 64K x 8, which maps cleanly to byte-addressable buffers for communication protocols. ## Supply and temperature range — single-rail simplicity Internal oscillator is on-chip, so a basic application can boot without an external crystal; the clock tree accepts a 4-48 MHz external crystal or a 32.768 kHz RTC crystal when timing accuracy matters. ## Peripheral set for fieldbus and analog front-ends Connectivity includes CAN, USB, QSPI, I²C, SPI, UART/USART, and SAI — enough to bridge a CANopen fieldbus to a UART sensor hub or drive a QSPI NOR flash for data logging. The 10-channel 12-bit ADC and dual 12-bit DAC let you sample analog inputs and generate analog outputs without external converters.","metaTitle":"STM32L432KCU3 STM32L4 MCU, 80 MHz, 256 KB Flash, 32-UFQFPN","metaDescription":"STMicroelectronics STM32L432KCU3 ARM Cortex-M4 MCU, 80 MHz, 256 KB flash, 64 KB SRAM, 32-UFQFPN 5x5 mm, -40 to +125°C. Active production, sourced 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":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.71V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.5500","priceTiers":[{"qty":1,"price":"$6.55000","currency":"USD"},{"qty":10,"price":"$5.92000","currency":"USD"},{"qty":25,"price":"$5.64440","currency":"USD"},{"qty":80,"price":"$4.90113","currency":"USD"},{"qty":230,"price":"$4.68087","currency":"USD"},{"qty":440,"price":"$4.26786","currency":"USD"},{"qty":945,"price":"$3.71717","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1843cc682eddd0736c1d2ccd291fb9a9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L432KCU3/alternatives.json"},"ai":{"faq":[{"question":"What is STM32L432KCU3's listed speed?","answer":"The core runs at 80 MHz, which is the maximum clock speed for this ARM Cortex-M4 in the STM32L4 series. The FPU and DSP instructions execute at this rate, giving 100 DMIPS typical throughput."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L432KCU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L432KCU3 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}}