{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L073CBU6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L073CBU6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L073CBU6","factsUrl":"https://icboms.com/api/mcp/products/STM32L073CBU6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L0 series STM32L073CBU6, 32-bit ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash, 20 KB SRAM, 6 KB EEPROM, 37 I/O, USB, I²C, SPI, UART, 1.65 V to 3.6 V, -40°C to 85°C, 48-UFQFN exposed pad.","salesMarkdown":"## 32 MHz Cortex-M0+ with embedded EEPROM — the field-swap angle The STM32L073CBU6 is an STMicroelectronics ultra-low-power 32-bit MCU built around the ARM Cortex-M0+ core running at 32 MHz. The 48-UFQFN package with exposed pad (7x7 mm) is small enough for compact PCBs but needs a thermal via stitch under the pad if you push continuous current through the I/O banks. Orientation is marked by a chamfer on pin 1 — visible under magnification, but I would still hit it with a continuity check before reflow if the board is going into a sealed enclosure. ## Peripheral set and connectivity — what is on the bus This MCU includes a USB interface, which the B* questions flag as a common search point — yes, it supports USB. On the analog side there are ten 12-bit ADC channels and two 12-bit DAC outputs. The peripheral list includes a brown-out detect, POR, PWM timers, a watchdog, DMA, I²S, and an LCD driver — the LCD segment is unusual for this class and saves an external display controller in metering or control-panel designs. With 37 I/O lines in a 48-pin package, you get decent GPIO density for a small-footprint board. That means no last-time-buy deadline looming, no pressure to qualify a replacement for a production line. The base product number is STM32L073, so future variants in the same family share the same peripheral map and pinout — good for a roadmap hedge. ## Sourcing — quoted to order, no shelf-stock illusion The active lifecycle means the supply channel is stable, but the 48-UFQFN package is not a commodity jellybean, so lead time varies with batch. Get a quote before you commit the BOM line.","metaTitle":"STM32L073CBU6 ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash","metaDescription":"STMicroelectronics STM32L073CBU6 32-bit MCU with ARM Cortex-M0+ core at 32 MHz. 128 KB Flash, 20 KB SRAM, 6 KB EEPROM. USB, I²C, SPI, UART.","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":"Tray","RAM Size":"20K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"6K x 8","Peripherals":"Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"37","Core Processor":"ARM® Cortex®-M0+","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 10x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32L073","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"48-UFQFPN (7x7)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.5251","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/24c2fa6893df866284b85abb18fbe5fd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between STM32L073CBU6 and STM32L072CBU6?","answer":"The STM32L073CBU6 adds a hardware LCD driver and a larger EEPROM array (6 KB vs the STM32L072's smaller EEPROM). The core, Flash size, SRAM, and pinout are otherwise the same. If your design does not need the LCD controller, the STM32L072 is a cost-down alternative; if you need the LCD drive, the STM32L073 is the one."},{"question":"Does STM32L073CBU6 support USB interface?","answer":"The USB peripheral is present on this MCU."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L073CBU6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L073CBU6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:35:48.263Z","lastPublished":"2026-07-16T12:35:48.263Z","indexable":true}}