{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L011E4Y6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L011E4Y6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L011E4Y6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L011E4Y6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L011E4Y6TR, ARM® Cortex®-M0+ 32-bit MCU, 32 MHz, 16 KB Flash, 2K x 8 RAM, 512 x 8 EEPROM, 1.65 V ~ 3.6 V, -40°C ~ 85°C, 25-WLCSP.","salesMarkdown":"On-chip peripherals include a 12-bit ADC with 10 channels, DMA, a PWM timer, and a brown-out detect / POR block that simplifies power-on sequencing. ## Package and board-fit realities The part comes in a 25-ball WLCSP (wafer-level chip-scale package), supplier device package 25-WLCSP. That means the die is essentially the package — no plastic overmold, no leads. For a rework tech: WLCSP is not hand-solderable; you need a hot-air rework station with a fine nozzle and a preheat plate. The 21 I/O lines are accessible on the ball grid, so the PCB fan-out via pattern matters — expect micro-vias or via-in-pad if the board density is high. That covers outdoor telecom cabinets, factory-floor sensors, and engine-bay-adjacent electronics that aren't directly on the block. Supply voltage down to 1.65 V means this MCU will keep running through a battery's full discharge curve — a real advantage in coin-cell or two-AA applications. ## Memory and peripheral budget 16 KB Flash and 2 KB RAM is a tight fit. You are looking at a single-purpose firmware image — a bootloader plus one application, no OTA staging area unless you page the Flash in 1 KB sectors. The 512-byte EEPROM is useful for calibration constants or configuration that survives reprogramming. Connectivity is I2C, SPI, UART/USART, and IrDA — enough for a simple sensor hub or a serial bridge. The 10-channel 12-bit ADC samples at up to 1.14 Msps in the STM32L0 family, enough for audio-rate or low-speed data acquisition. ## Sourcing and lifecycle position The base product number is STM32L011, which spans several Flash and package options in the same die family.","metaTitle":"STM32L011E4Y6TR MCU, ARM Cortex-M0+, 32 MHz, 16 KB Flash","metaDescription":"STM32L011E4Y6TR is an STMicroelectronics 32-bit ARM Cortex-M0+ MCU at 32 MHz with 16 KB Flash, 2 KB RAM, 512 B EEPROM.","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":"21","Core Processor":"ARM® Cortex®-M0+","Package / Case":"25-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 10x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L011","Program Memory Size":"16KB (16K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"25-WLCSP","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.6000","priceTiers":[{"qty":1,"price":"$2.60000","currency":"USD"},{"qty":10,"price":"$2.33200","currency":"USD"},{"qty":25,"price":"$2.20040","currency":"USD"},{"qty":100,"price":"$1.87460","currency":"USD"},{"qty":250,"price":"$1.76024","currency":"USD"},{"qty":500,"price":"$1.54020","currency":"USD"},{"qty":1000,"price":"$1.27617","currency":"USD"},{"qty":2500,"price":"$1.18815","currency":"USD"},{"qty":5000,"price":"$1.14415","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/186ae0e234bc3e91c5436123bd03d6e8.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32L011E4Y6TR/alternatives.json"},"ai":{"faq":[{"question":"Does STM32L011E4Y6TR support I2C and SPI?","answer":"Yes, the connectivity block includes I2C and SPI interfaces, along with UART/USART and IrDA."},{"question":"How to program STM32L011E4Y6TR?","answer":"The MCU supports standard ARM Serial Wire Debug (SWD) through the SWDIO and SWCLK pins. ST's ST-Link programmer or any third-party CMSIS-DAP debugger works. The bootloader in system memory also allows UART-based programming via the USART pins. The internal oscillator is enabled by default, so no external clock is needed to start programming."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L011E4Y6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L011E4Y6TR 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}}