{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L072CZY3TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L072CZY3TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L072CZY3TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L072CZY3TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series, ARM Cortex-M0+, 32-Bit Single-Core, 32MHz, 192KB (192K x 8) FLASH, 20K x 8 RAM, 6K x 8 EEPROM, 40 I/O, 1.65V ~ 3.6V, -40°C ~ 125°C (TA), 49-UFBGA, WLCSP, Surface Mount.","salesMarkdown":"## Ultra-low-power Cortex-M0+ for space-constrained, harsh-environment designs The STM32L072CZY3TR: The 49-WLCSP package (3.29 x 3.26 mm) is one of the smallest available for this feature set. ## Memory and peripheral budget for a firmware engineer's first-power checklist With 192 KB of Flash and 20 KB of RAM, this MCU handles moderate application code and a modest real-time data buffer. The 6 KB EEPROM is particularly useful for storing calibration constants, configuration parameters, or fault logs without needing an external serial EEPROM — a BOM simplification. ## 49-WLCSP footprint: layout and assembly considerations This package requires a solder mask-defined pad and a via-in-pad or microvia fanout for the inner balls. The MSL rating is typically MSL 1 or MSL 3 for WLCSP; confirm the moisture sensitivity level on the reel label and bake per IPC/JEDEC J-STD-033 if the floor-life window has been exceeded. Decoupling: place a 100 nF MLCC as close as possible to each VDD/VDDIO pair, with a 4.7 µF bulk capacitor near the supply entry point. The exposed die backside is not a thermal pad — all heat dissipation is through the solder balls and the PCB copper. ## Sourcing posture for this active part This makes it suitable for new designs and long-running production programs. If you are dual-sourcing, note that the STM32L072 family includes several WLCSP variants; the base product number (STM32L072) is the same, but pin compatibility across density options should be verified from the respective datasheets.","metaTitle":"ST STM32L072CZY3TR ARM Cortex-M0+ MCU, 32 MHz, 192 KB Flash","metaDescription":"STMicroelectronics STM32L072CZY3TR 32-bit MCU, 32 MHz ARM Cortex-M0+, 192 KB Flash, 20 KB RAM, 6 KB EEPROM, -40 to 125°C, 49-WLCSP. Active production.","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":"20K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"6K x 8","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"I²C, IrDA, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"40","Core Processor":"ARM® Cortex®-M0+","Package / Case":"49-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L072","Program Memory Size":"192KB (192K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~125°C(TA)","Supplier Device Package":"49-WLCSP (3.29x3.26)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.8569","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/264c0ee7c094c660bde8f39095821f8b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is STM32L072CZY3TR pin compatible with STM32L072CZY6?","answer":"Both are WLCSP variants under the same base product number STM32L072, but pin compatibility depends on the exact ball map. Verify the ball-out from the respective datasheets before assuming a drop-in replacement."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L072CZY3TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L072CZY3TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:21:41.303Z","lastPublished":"2026-07-16T13:21:41.303Z","indexable":true}}