{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L011E3Y6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L011E3Y6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L011E3Y6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L011E3Y6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, ARM Cortex-M0+ 32-Bit Single-Core MCU, 32MHz, 8KB (8K x 8) FLASH, 2K x 8 RAM, 512 x 8 EEPROM, 25-UFBGA/WLCSP, -40°C ~ 85°C, 1.65V ~ 3.6V.","salesMarkdown":"## 32 MHz Cortex-M0+ in a 2.13 x 2.07 mm WLCSP — what fits where The STM32L011E3Y6TR is STMicroelectronics' entry-level ultra-low-power MCU from the STM32L0 series, built around a 32-Bit ARM Cortex-M0+ core running at 32 MHz. It carries 8 KB of Flash program memory, 2 KB of SRAM, and 512 bytes of on-chip EEPROM — enough for small sensor nodes, simple control loops, and configuration storage without an external serial EEPROM. ## Memory budget and peripheral set — what the 8 KB / 2 KB / 512 B split means The 8 KB Flash is the tightest constraint: it fits a lightweight RTOS kernel plus one or two protocol stacks (I²C, SPI, or UART), but leaves little room for over-the-air update staging. The 2 KB SRAM handles a modest call stack and a few data buffers; DMA offloads the core during peripheral transfers. The 512-byte EEPROM is a genuine differentiator — it stores calibration constants, node IDs, and fault logs without needing an external memory IC, saving board area and BOM cost. The 21 I/O lines in the 25-WLCSP package give enough pins for a small keypad, LED indicators, and one or two serial buses. ## WLCSP package — board assembly and storage realities It saves significant PCB area versus a TSSOP or QFN, but demands a controlled solder-paste stencil and a reflow profile tuned for the small solder balls. Moisture sensitivity is typically MSL 1 for WLCSP, but verify the date-code-specific MSL rating on the reel label. Store the reels in a dry cabinet if the seal is broken; the exposed silicon edges are more vulnerable to handling damage than a molded package.","metaTitle":"STM32L011E3Y6TR ARM Cortex-M0+ MCU, 32 MHz, 8 KB Flash","metaDescription":"STM32L011E3Y6TR 32-bit MCU from STMicroelectronics STM32L0 series. ARM Cortex-M0+ core at 32 MHz, 8 KB Flash, 2 KB SRAM, 512 B EEPROM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"32MHz","Series":"STM32L0","Package":"Tape & Reel (TR)","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":"8KB (8K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"25-WLCSP (2.13x2.07)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0365","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/186ae0e234bc3e91c5436123bd03d6e8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32L011E3Y6TR compatible with 3.3V logic?","answer":"Yes. The I/O pins are 5 V tolerant per the STM32L0 family datasheet, but the logic thresholds are 3.3 V referenced."},{"question":"Does STM32L011E3Y6TR have an alternative or equivalent?","answer":"Within the STM32L0 series, the STM32L011x3 family shares the same core, memory footprint, and peripheral set in different package options (TSSOP, QFN). For a pin-compatible WLCSP alternative with more memory, the STM32L021E3Y6TR offers 16 KB Flash and 4 KB SRAM in the same 25-WLCSP footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L011E3Y6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L011E3Y6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:28:46.456Z","lastPublished":"2026-07-16T12:28:46.456Z","indexable":true}}