{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F031E6Y6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F031E6Y6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F031E6Y6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32F031E6Y6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F0 series, ARM® Cortex®-M0, 32-Bit Single-Core, 48MHz, 32KB (32K x 8) FLASH, 4K x 8 RAM, 25-UFBGA, WLCSP, -40°C ~ 85°C (TA).","salesMarkdown":"## 48 MHz Cortex-M0 in a 25-WLCSP — the space-constrained control MCU The STM32F031E6Y6TR: It targets cost-sensitive, space-constrained embedded control applications — motor commutation, sensor fusion, simple HMI, and I/O expansion — where the 25-WLCSP package saves board area versus a TSSOP or QFN. The 20 available I/O lines and peripheral set including DMA, I²S, POR, PWM, and WDT give it the basic timing and data-movement hardware for a single-loop control task without an external supervisor. ## 32 KB Flash, 4 KB SRAM — sizing the firmware budget The 32 KB Flash (32K x 8) and 4 KB SRAM (4K x 8) define the application envelope. This is the entry-density tier of the STM32F0 family, suited for a single firmware image with a modest state machine, a few hundred lines of control logic, and a small data buffer. The 12-bit ADC with 13 channels covers analog sensing — thermistor, current shunt, or potentiometer feedback — without an external converter. Designs that need a USB stack, a larger lookup table, or over-the-air update staging will outgrow this memory budget; the STM32F031 series steps up through 64 KB Flash options in the same WLCSP footprint. ## 25-WLCSP — what the package means for assembly and procurement The 25-WLCSP (Wafer-Level Chip-Scale Package) is the smallest physical footprint for this MCU — roughly 2.5 mm × 2.5 mm, with solder balls on a 0.4 mm pitch. That shrinks the PCB real estate to nearly the die size, which matters for wearable, sensor-pod, or multi-layer rigid-flex designs. The trade-off: WLCSP requires a controlled SMT process with stencil design matched to the ball diameter, and rework is difficult without a dedicated BGA rework station.","metaTitle":"STM32F031E6Y6TR STM32F0 32-bit MCU, 48 MHz, 32 KB Flash","metaDescription":"STMicroelectronics STM32F031E6Y6TR ARM Cortex-M0 MCU, 48 MHz, 32 KB Flash, 4 KB SRAM, 20 I/O, 25-WLCSP. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"STM32F0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"48MHz","Series":"STM32F0","Package":"Tape & Reel (TR) Cut Tape (CT)","RAM Size":"4K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, I²S, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"20","Core Processor":"ARM® Cortex®-M0","Package / Case":"25-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 13x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F031","Program Memory Size":"32KB (32K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"25-WLCSP","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9400","priceTiers":[{"qty":1,"price":"$2.94000","currency":"USD"},{"qty":10,"price":"$2.64300","currency":"USD"},{"qty":25,"price":"$2.49320","currency":"USD"},{"qty":100,"price":"$2.12420","currency":"USD"},{"qty":250,"price":"$1.99456","currency":"USD"},{"qty":500,"price":"$1.74522","currency":"USD"},{"qty":1000,"price":"$1.44605","currency":"USD"},{"qty":2500,"price":"$1.34632","currency":"USD"},{"qty":5000,"price":"$1.29646","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7127f169a82fed95ea2bf9d385a9c5f9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F031E6Y6TR/alternatives.json"},"ai":{"faq":[{"question":"What are the alternatives or equivalent parts to STM32F031E6Y6TR?","answer":"Within the same STM32F031 series, higher-density Flash variants (64 KB) are available in the same 25-WLCSP footprint. The STM32L151CBU6A is a different core (Cortex-M3) and package, not a pin-compatible replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F031E6Y6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F031E6Y6TR 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}}