{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L011F3U6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L011F3U6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L011F3U6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L011F3U6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series ARM Cortex-M0+ 32-bit MCU, STM32L011F3U6TR, 32 MHz, 8 KB Flash, 2 KB RAM, 512 B EEPROM, 16 I/O, 7x12-bit ADC, 1.65-3.6 V, -40 to 85°C, 20-UFQFPN 3x3 mm, Tape & Reel.","salesMarkdown":"## Active production — no end-of-life risk for this STM32L0 entry The STM32L011F3U6TR: ROHS3 compliant per the manufacturer's declaration, with no REACH or conflict-mineral restrictions flagged in the standard compliance package. ## 32 MHz Cortex-M0+ with 8 KB flash — what the memory budget really means The ARM Cortex-M0+ core runs at 32 MHz — enough for sensor polling, communication protocol handling, and simple control loops. The 8 KB flash (8K x 8) and 2 KB RAM (2K x 8) limit firmware complexity; expect to fit a lightweight RTOS or a bare-metal scheduler, but not a full TCP/IP stack with buffers. 512 bytes of on-chip EEPROM (512 x 8) stores calibration coefficients, node IDs, and configuration parameters that survive power cycles without wearing the flash. The 7-channel 12-bit ADC (A/D 7x12b) covers multi-sensor analog front-ends — temperature, pressure, light, or battery voltage monitoring — all on one chip without an external mux. The internal oscillator (Oscillator Type: Internal) eliminates the external crystal for the main clock in many applications, though an external source can still be fed through the UART/USART pins for precise baud-rate generation. ## 20-UFQFPN 3x3 mm — rework reality for a tiny QFN Housed in a 20-UFQFPN package measuring 3x3 mm (Supplier Device Package: 20-UFQFPN (3x3)), this is a small QFN with an exposed pad underneath. Surface-mount only (Mounting Type: Surface Mount). The 0.5 mm pitch QFN is reworkable with hot air if the board has adequate solder mask dams between pads — but the exposed pad makes hand-soldering impractical. A pre-heated bottom side helps prevent tombstoning during reflow. 16 I/O pins (Number of I/O: 16) in a 20-pin package means four pins are dedicated to power and ground — plan the pin allocation early because the I/O count is tight for designs needing multiple serial interfaces simultaneously. The 32 MHz core speed is guaranteed across this range, though flash access may require wait states at the high end. Peripherals include Brown-out Detect/Reset, POR, PWM, WDT, and DMA — the brown-out detector prevents corrupted flash writes during power loss, critical for battery-powered field devices that may be hot-swapped. Connectivity options: I²C, IrDA, SPI, and UART/USART — enough for a sensor hub talking to a radio module (SPI) and a debug console (UART) simultaneously, but no CAN or USB built in.","metaTitle":"STM32L011F3U6TR STM32L0 MCU, 32 MHz, 8 KB Flash, 20-UFQFPN","metaDescription":"STMicroelectronics STM32L011F3U6TR ARM Cortex-M0+ MCU, 32 MHz, 8 KB Flash, 2 KB RAM, 512 B EEPROM, -40 to 85°C, 20-UFQFPN. Active lifecycle, ROHS3 compliant.","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":"2K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"512 x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"16","Core Processor":"ARM® Cortex®-M0+","Package / Case":"20-UFQFN","Product Status":"Active","Data Converters":"A/D 7x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L011","Program Memory Size":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-UFQFPN (3x3)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3900","priceTiers":[{"qty":1,"price":"$2.39000","currency":"USD"},{"qty":10,"price":"$2.14900","currency":"USD"},{"qty":25,"price":"$2.02800","currency":"USD"},{"qty":100,"price":"$1.72770","currency":"USD"},{"qty":250,"price":"$1.62228","currency":"USD"},{"qty":500,"price":"$1.41948","currency":"USD"},{"qty":1000,"price":"$1.17614","currency":"USD"},{"qty":3000,"price":"$1.09503","currency":"USD"},{"qty":6000,"price":"$1.05447","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9c099abe8e75939b63e0c0b04b4c1a1d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L011F3U6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to STM32L011F3U6TR — can STM32L151CBU6A drop in?","answer":"No, the STM32L151CBU6A is not a pin-compatible drop-in. It uses a Cortex-M3 core (vs M0+), has 37 I/O (vs 16), a larger package, and different peripheral set including USB. The STM32L011F3U6TR is the smallest-footprint entry in the STM32L0 series; a board spin or at least a PCB layout change would be required to use the L151."},{"question":"What compliance documentation does STMicroelectronics provide for STM32L011F3U6TR?","answer":"The part is ROHS3 compliant per the manufacturer's declaration. Standard STMicroelectronics compliance documentation includes the ROHS certificate of compliance and material declaration; REACH and conflict-mineral reports are available through the ST compliance portal upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L011F3U6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L011F3U6TR 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}}