{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L071KBU3","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L071KBU3","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L071KBU3","factsUrl":"https://icboms.com/api/mcp/products/STM32L071KBU3","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L0 series, ARM® Cortex®-M0+, 32-bit, 32 MHz, 128KB Flash, 20K x 8 RAM, 6K x 8 EEPROM, 23 I/O, 1.65V-3.6V, -40°C to 125°C, 32-UFQFN Exposed Pad.","salesMarkdown":"## 32 MHz ARM Cortex-M0+ in a 5x5 mm exposed-pad package The STM32L071KBU3 is a 32-bit MCU from STMicroelectronics' STM32L0 ultra-low-power series, built around the ARM Cortex-M0+ core running at 32 MHz. Peripherals include a 10-channel 12-bit ADC, DMA, PWM timers, and connectivity via I2C, SPI, UART/USART, and IrDA. The 32-UFQFPN package with exposed pad (5x5 mm) suits space-constrained PCBs where thermal dissipation matters. The 1.65 V minimum supply is lower than many competitors' 1.8 V floor, which matters when the battery is near end-of-discharge. At 3.6 V maximum, the part tolerates a fully charged Li-ion cell without an external LDO. It is ROHS3 compliant. The base product number STM32L071 covers multiple density and package variants, so a future migration to a pin-compatible sibling (e.g., with more Flash or a different temperature grade) stays within the same family without a PCB spin. ## 23 I/O in a 32-pin UFQFPN — layout notes With 23 general-purpose I/O lines, the part covers a UART, an SPI, an I2C, and a handful of PWM outputs or ADC inputs while leaving room for a few GPIOs. The mounting type is surface mount; no through-hole variant exists for this density.","metaTitle":"STM32L071KBU3 MCU, ARM Cortex-M0+, 32 MHz, 128KB Flash","metaDescription":"STM32L071KBU3 32-bit MCU from STMicroelectronics STM32L0 series. ARM Cortex-M0+ core at 32 MHz, 128KB Flash, 20KB RAM, 6KB EEPROM. Wide supply 1.65V-3.6V.","metaKeywords":null},"attributes":{"series":"STM32L0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tray","RAM Size":"20K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"6K x 8","Peripherals":"Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT","Connectivity":"I2C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"23","Core Processor":"ARM® Cortex®-M0+","Package / Case":"32-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L071","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.1000","priceTiers":[{"qty":1,"price":"$5.10000","currency":"USD"},{"qty":10,"price":"$4.57900","currency":"USD"},{"qty":25,"price":"$4.32920","currency":"USD"},{"qty":80,"price":"$3.75188","currency":"USD"},{"qty":230,"price":"$3.55948","currency":"USD"},{"qty":440,"price":"$3.19393","currency":"USD"},{"qty":945,"price":"$2.69367","currency":"USD"},{"qty":2940,"price":"$2.55899","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bdf0122ce3763ca70cc9e1606c816ad1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L071KBU3/alternatives.json"},"ai":{"faq":[{"question":"Can STM32L071KBU3 be used with a 3.3V supply?","answer":"Yes. The brown-out detect and POR peripherals handle reset integrity across the full range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L071KBU3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L071KBU3 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}}