{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L071RBT6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L071RBT6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L071RBT6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L071RBT6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L071RBT6TR, STM32L0 series, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash, 20 KB RAM, 6 KB EEPROM, 51 I/O, 1.65-3.6 V, -40 to 85°C, 64-LQFP.","salesMarkdown":"On-chip peripherals include a 12-bit ADC with 16 channels, multiple I2C, SPI, and UART/USART interfaces, plus DMA and a PWM timer set — enough for sensor fusion, metering, and IoT edge-node control loops. The 128 KB Flash is sized for moderate application code plus a bootloader, while the 20 KB SRAM handles stack and data buffers for real-time processing. The separate 6 KB EEPROM is a genuine on-chip EEPROM, not emulated Flash — it supports single-byte writes and the rated endurance of 100k cycles typical for the STM32L0 family, so calibration constants, configuration parameters, and data-logging counters survive power loss without external serial EEPROM or wear-leveling code. ## Supply voltage and power rail design The lower end is key for battery-powered designs where the cell voltage drops below 2 V; the upper end covers standard 3.3 V logic without a separate regulator. ## Package and I/O count for board layout The 64-LQFP (10x10 mm) package with 51 I/O gives a good pin-to-area ratio for dense sensor arrays or parallel interfaces. The fine-pitch QFP is hand-solderable in rework but benefits from a solder-paste stencil for production. All I/O are 5 V-tolerant on the STM32L0 series, simplifying level translation when interfacing with legacy 5 V peripherals.","metaTitle":"STM32L071RBT6TR STM32L0 MCU, 32 MHz, 128 KB Flash, 64-LQFP","metaDescription":"STMicroelectronics STM32L071RBT6TR 32-bit ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash, 20 KB RAM, 6 KB EEPROM, 51 I/O, 1.65-3.6 V, -40 to 85°C. Active lifecycle.","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":"Tape & Reel (TR) Cut Tape (CT)","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":"51","Core Processor":"ARM® Cortex®-M0+","Package / Case":"64-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b","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 ~ 85°C (TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.1300","priceTiers":[{"qty":1,"price":"$5.13000","currency":"USD"},{"qty":10,"price":"$4.60600","currency":"USD"},{"qty":25,"price":"$4.35440","currency":"USD"},{"qty":100,"price":"$3.77380","currency":"USD"},{"qty":250,"price":"$3.58024","currency":"USD"},{"qty":500,"price":"$3.21254","currency":"USD"},{"qty":1000,"price":"$2.70937","currency":"USD"},{"qty":2000,"price":"$2.57390","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/22d621a76748b868dc4a8fc30085ea48.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L071RBT6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32L071RBT6 and STM32L071RBT6TR?","answer":"The two part numbers are electrically identical; the TR suffix indicates Tape & Reel packaging for automated pick-and-place, while the base part number (without TR) typically ships in trays or tubes. The functional specs — 32 MHz Cortex-M0+, 128 KB Flash, 20 KB RAM, 6 KB EEPROM, 64-LQFP — are the same."},{"question":"What are the alternatives to STM32L071RBT6TR?","answer":"A functional alternative within the STM32 portfolio is the STM32L151CBU6A, which uses a Cortex-M3 core at the same 32 MHz clock but adds a USB interface and a 2-channel 12-bit DAC. The STM32L151CBU6A comes in a 48-pin UFQFPN package with 37 I/O, so a board redesign is required. For a pin-compatible drop-in, stay within the STM32L071 series density options."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L071RBT6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L071RBT6TR 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}}