{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L072CZY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L072CZY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L072CZY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L072CZY6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series ARM Cortex-M0+ 32-bit MCU, 32 MHz, 192 KB Flash, 20 KB SRAM, 6 KB EEPROM, 49-WLCSP, -40 to 85 °C.","salesMarkdown":"## What the STM32L072CZY6TR brings to a BOM The STM32L072CZY6TR is an STMicroelectronics ARM Cortex-M0+ 32-bit MCU running at 32 MHz, with 192 KB of Flash program memory, 20 KB SRAM, and 6 KB EEPROM — all in a 49-ball WLCSP that measures roughly 3.3 × 3.4 mm. It belongs to the STM32L0 ultra-low-power series, targeting battery-operated and energy-harvesting designs where every microamp matters. ## Memory mix — 192 KB Flash plus on-chip EEPROM The 192 KB Flash is enough for a modest application stack plus a bootloader; the 20 KB SRAM handles moderate data buffers. The 6 KB EEPROM is the standout — it saves an external serial EEPROM for calibration constants, configuration parameters, or fail-safe logs, cutting board area and BOM cost. The EEPROM is rated for 100k write cycles per byte, so wear-leveling logic is optional for most use cases. ## 49-WLCSP — smallest footprint, tighter assembly The 49-ball WLCSP (Wafer-Level Chip-Scale Package) is the smallest package option in the STM32L0 family — roughly 3.3 × 3.4 mm. That saves board space in wearables, sensor nodes, and medical patches, but it also means the PCB needs fine-pitch assembly capability and a clean solder-paste stencil. The WLCSP has no exposed thermal pad; heat dissipation is through the solder balls into the board copper. For high-reliability or high-vibration environments, consider the LQFP-64 variant instead. ## Peripherals and connectivity for sensor-node designs The brown-out detect and POR circuits reduce external supervisor ICs. The 40 GPIOs in the WLCSP are enough for a keypad + display + sensor cluster in a compact product. STMicroelectronics lists the STM32L072CZY6TR as Active. The base product number STM32L072 covers multiple Flash/SRAM/package variants, so if the WLCSP is not a fit, a pin-compatible LQFP or BGA sibling exists within the same family.","metaTitle":"ST STM32L072CZY6TR ARM Cortex-M0+ MCU, 32 MHz, 192 KB Flash","metaDescription":"STM32L072CZY6TR: 32-bit ARM Cortex-M0+ MCU at 32 MHz, 192 KB Flash, 20 KB SRAM, 6 KB EEPROM, 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); Cut Tape (CT)","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 13x12b; 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~85°C(TA)","Supplier Device Package":"49-WLCSP","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.5200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/264c0ee7c094c660bde8f39095821f8b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L072CZY6TR?","answer":"Within the STM32L072 family, the STM32L072CZY6 (non-tape-and-reel suffix) is the same silicon in the same 49-WLCSP package. The 'TR' suffix only denotes Tape & Reel packaging. For a larger package, the STM32L072RBT6 in LQFP-64 is pin-compatible across the same core and memory options."},{"question":"What is STM32L072CZY6TR's listed speed?","answer":"The core runs at 32 MHz, which is the standard speed for the STM32L0 series. That is enough for sensor polling, data logging, and low-duty-cycle wireless protocols."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L072CZY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L072CZY6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:21:29.144Z","lastPublished":"2026-07-16T13:21:29.144Z","indexable":true}}