{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F091CBU6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F091CBU6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F091CBU6","factsUrl":"https://icboms.com/api/mcp/products/STM32F091CBU6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F091CBU6, STM32F0 series, 32-bit ARM Cortex-M0 MCU, 48 MHz, 128 KB Flash, 32 KB SRAM, 48-UFQFPN (7x7 mm), -40°C to 85°C.","salesMarkdown":"## 48 MHz Cortex-M0 with 128 KB Flash — what it handles The STM32F091CBU6: It is part of the STM32F0 value-line family, designed for cost-sensitive control and sensor-fusion applications where the Cortex-M0 core delivers adequate throughput. The base product number is STM32F091, which covers the full density and package variant family. ## 48-UFQFN exposed pad — layout considerations Supply voltage range is 2.0 V to 3.6 V, so a single 3.3 V rail is fine. ## Delta: STM32F091CBU6 vs STM32L151CBU6A The L151 includes USB connectivity and a 16-channel 12-bit ADC, while the F091 has 13 ADC channels plus two DACs. The L151's supply voltage drops to 1.8 V, useful for battery-powered designs; the F091 stays at 2.0 V minimum.","metaTitle":"STM32F091CBU6 MCU, 48 MHz Cortex-M0, 128 KB Flash, 48-UFQFPN","metaDescription":"STMicroelectronics STM32F091CBU6 32-bit ARM Cortex-M0 MCU at 48 MHz with 128 KB Flash, 32 KB SRAM, 13x12b ADC, 2x12b DAC, CAN, I²C, SPI, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":"STM32F0","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"48MHz","Series":"STM32F0","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, I²S, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, SPI, UART/USART","Mounting Type":"Surface Mount","Number of I/O":"38","Core Processor":"ARM® Cortex®-M0","Package / Case":"48-UFQFN Exposed Pad","Product Status":"Active","Data Converters":"A/D 13x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F091","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)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.0400","priceTiers":[{"qty":1,"price":"$5.04000","currency":"USD"},{"qty":10,"price":"$4.52900","currency":"USD"},{"qty":25,"price":"$4.28200","currency":"USD"},{"qty":80,"price":"$3.71113","currency":"USD"},{"qty":230,"price":"$3.52083","currency":"USD"},{"qty":440,"price":"$3.15923","currency":"USD"},{"qty":1560,"price":"$2.66440","currency":"USD"},{"qty":3120,"price":"$2.53118","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/eb815e3c1023a3c34c75039eeb7a4080.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F091CBU6/alternatives.json"},"ai":{"faq":[{"question":"What is an equivalent or replacement for STM32F091CBU6 if unavailable?","answer":"The STM32L151CBU6A is a functional peer with a Cortex-M3 core at 32 MHz, similar Flash and SRAM, and a comparable 48-UFQFPN package. However, it is not a pin-compatible or software-compatible drop-in — the peripheral set and register map differ. For a true second source within the STM32F0 family, consider the STM32F091RCT6 (64-pin LQFP) if pin count allows, or the STM32F091CCU6 (48-UFQFPN, 256 KB Flash) for higher memory. Verify firmware porting effort before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F091CBU6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F091CBU6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}