{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L072RBT6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L072RBT6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L072RBT6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L072RBT6TR","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32L0 series, ARM Cortex-M0+ 32-bit MCU, STM32L072RBT6TR, 32MHz, 128KB Flash, 20K x 8 RAM, 6K x 8 EEPROM, 1.65V-3.6V supply, 64-LQFP (10x10mm), -40 to 85°C.","salesMarkdown":"The 64-LQFP package (10x10 mm) gives 51 I/Os, including a 16-channel 12-bit ADC and two 12-bit DACs, plus USB, SPI, I²C, and UART connectivity. ## Supply voltage and power rail decisions At the low end it runs on a single 1.8 V rail common in coin-cell designs; at the high end it tolerates a 3.6 V Li-ion cell at full charge. No external LDO is needed for the core — the internal regulator handles the drop. If your system already has a 3.3 V rail, the STM32L072RBT6TR sits on it directly, but the real advantage is the 1.65 V floor for sub-2 V battery chemistries. ## Embedded EEPROM — one less BOM line The 6 KB EEPROM is rated for 100k write cycles and is byte-erasable, so you can store calibration constants, device serial numbers, or fault logs without wearing the Flash. This eliminates the external 24LCxx or 25LCxx serial EEPROM, saving about $0.10–0.20 per board and one I²C/SPI bus. The EEPROM is mapped into the memory space and accessible through a simple register interface — no special programming voltage needed. ## Lifecycle and sourcing posture This makes it suitable for new designs and long-life products where supply continuity matters.","metaTitle":"STM32L072RBT6TR ARM Cortex-M0+ MCU, 32MHz, 128KB Flash","metaDescription":"STM32L072RBT6TR: 32-bit ARM Cortex-M0+ MCU at 32MHz, 128KB Flash, 20KB RAM, 6KB EEPROM, 1.65V-3.6V supply, 64-LQFP.","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":"51","Core Processor":"ARM® Cortex®-M0+","Package / Case":"64-LQFP","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L072","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.9666","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/77d55e17e66ef075b4026118c9ce101e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between STM32L072RBT6TR and STM32L072RBT6?","answer":"The two parts are electrically and functionally identical. The 'TR' suffix indicates Tape & Reel packaging for automated pick-and-place assembly; the non-TR variant ships in trays or tubes. The silicon and firmware are the same."},{"question":"Can STM32L072RBT6TR be replaced with STM32L073RZT6?","answer":"The STM32L073RZT6 is a higher-density sibling in the same STM32L0 family with 192 KB Flash and 20 KB RAM, but it comes in a 64-LQFP package with a different pinout (the RZT6 uses a different pin mapping). A direct drop-in replacement is not possible without a PCB layout change. For a pin-compatible alternative, consider the STM32L072RBT6 (same silicon, different shipping medium) or the STM32L072RZT6 (192 KB Flash, same 64-LQFP footprint but verify pin compatibility in the datasheet)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L072RBT6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L072RBT6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:13:21.042Z","lastPublished":"2026-07-16T13:13:21.042Z","indexable":true}}