{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32L072KBU6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32L072KBU6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32L072KBU6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32L072KBU6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32L072KBU6TR, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 128 KB Flash, 20 KB SRAM, 6 KB EEPROM, 1.65 V–3.6 V, -40°C to 85°C, 32-UFQFPN (5x5 mm), 25 I/O, USB, I²C, SPI, UART.","salesMarkdown":"## 32 MHz Cortex-M0+ with 1.65 V floor — the ultra-low-power baseline It runs at 32 MHz and packs 128 KB of Flash, 20 KB of SRAM, and 6 KB of embedded EEPROM — the EEPROM eliminates the external serial memory chip for parameter storage. The supply range down to 1.65 V means it can run directly from a single alkaline cell or a Li-ion battery near end-of-discharge, which is the main reason you pick this over a 2.0 V-minimum Cortex-M0+ part. ## Memory sizing — 128 KB Flash / 20 KB SRAM / 6 KB EEPROM 128 KB of Flash is enough for a modest application stack — a BLE beacon firmware, a sensor hub, or a simple motor controller — but you will bump into the ceiling if you try to run a full RTOS with a TCP/IP stack and a GUI. The 20 KB SRAM is tight for large buffers; plan your DMA and USB packet buffers carefully. The 6 KB EEPROM is a genuine hardware EEPROM, not emulated Flash, so you get 100k-cycle endurance per byte without wear-leveling code. The 1.65 V minimum supply voltage is the headline feature of the STM32L0 family. Most competing Cortex-M0+ MCUs need at least 2.0 V or 2.4 V, which forces a boost converter or a second cell. Here you can run the MCU directly from a single AA alkaline (1.65 V at end-of-life) or a Li-ion cell (3.6 V max). The internal oscillator and all peripherals remain functional across the full range, so no brownout surprises when the battery sags. There is no AEC-Q100 qualification on this part, so it is not rated for under-hood automotive or engine-bay environments. For cabin or infotainment applications where the ambient stays below 85°C, it is fine — but verify the customer's thermal spec before committing. ## Package and I/O — 32-UFQFPN with 25 GPIO Housed in a 32-UFQFPN (5x5 mm) with an exposed pad, this package is a compact surface-mount footprint suited for space-constrained PCBs. The 25 I/O lines include peripherals such as I²C, SPI, UART/USART, USB, and IrDA. STMicroelectronics lists the STM32L072KBU6TR as Active. This part is still in volume production and suitable for new designs. The base product number STM32L072 covers a range of density and package variants, so if you later need more Flash or a different pin count, you can move within the family without a full redesign.","metaTitle":"STM32L072KBU6TR ARM Cortex-M0+ MCU, 32 MHz, 128 KB Flash","metaDescription":"STMicroelectronics STM32L072KBU6TR 32-bit MCU, 32 MHz Cortex-M0+, 128 KB Flash, 20 KB SRAM, 6 KB EEPROM, 1.65 V–3.6 V, -40°C to 85°C, 32-UFQFPN.","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":"25","Core Processor":"ARM® Cortex®-M0+","Package / Case":"32-UFQFN Exposed Pad","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":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"32-UFQFPN (5x5)","Voltage - Supply (Vcc/Vdd)":"1.65V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1246","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d10440258824d672e5015991d51a28ee.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32L072KBU6TR in this component family?","answer":"Within the STM32L072 family, the STM32L072KBU6 (non-tape-and-reel variant) is functionally identical. For a different memory size, the STM32L072CZ (128 KB Flash, 48-pin) or STM32L072RB (192 KB Flash, 64-pin) share the same core and peripherals but differ in package and pin count. No exact pin-compatible drop-in with a different Flash size exists in the same 32-UFQFPN package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32L072KBU6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32L072KBU6TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:35:45.126Z","lastPublished":"2026-07-16T12:35:45.126Z","indexable":true}}