{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F091RCY6TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F091RCY6TR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F091RCY6TR","factsUrl":"https://icboms.com/api/mcp/products/STM32F091RCY6TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F0 series ARM Cortex-M0 32-bit MCU, STM32F091RCY6TR, 48MHz, 256KB Flash, 32KB RAM, 52 I/O, 64-WLCSP (3.35x3.59 mm), -40 to 85°C.","salesMarkdown":"## 48 MHz Cortex-M0 with 256 KB flash — where the memory budget lands The STM32F091RCY6TR runs an ARM Cortex-M0 core at 48 MHz, which for a firmware engineer means the execution ceiling is set by the flash wait-state profile at that clock rather than the core itself — at 48 MHz the zero-wait execution covers most control loops without stalling. ## Industrial temperature grade and peripheral mix The 19-channel 12-bit ADC covers multi-sensor front-ends like thermocouple arrays or current-sense amplifiers, while the dual 12-bit DAC drives analog actuator setpoints without an external converter.","metaTitle":"STM32F091RCY6TR STM32F0 MCU, 48MHz, 256KB Flash, 64-WLCSP","metaDescription":"STMicroelectronics STM32F091RCY6TR ARM Cortex-M0 MCU, 48MHz, 256KB Flash, 32KB RAM, 52 I/O, 64-WLCSP. Active production, ROHS3 compliant. Request quote.","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":"Tape & Reel (TR); Cut Tape (CT)","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":"52","Core Processor":"ARM® Cortex®-M0","Package / Case":"64-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 19x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F091","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"64-WLCSP (3.35x3.59)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.6600","priceTiers":[{"qty":1,"price":"$6.66000","currency":"USD"},{"qty":10,"price":"$6.01800","currency":"USD"},{"qty":25,"price":"$5.73760","currency":"USD"},{"qty":100,"price":"$4.98190","currency":"USD"},{"qty":250,"price":"$4.75804","currency":"USD"},{"qty":500,"price":"$4.33820","currency":"USD"},{"qty":1000,"price":"$3.81660","currency":"USD"},{"qty":5000,"price":"$3.81660","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/eb815e3c1023a3c34c75039eeb7a4080.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F091RCY6TR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative in the STM32F0 family?","answer":"The base product number STM32F091 covers multiple memory and package variants sharing the same 64-WLCSP footprint. The STM32F091VCT6 in LQFP-100 is not pin-compatible due to the different package. Within the 64-WLCSP package, the STM32F091RCT6 (256 KB flash, 32 KB RAM) is the same die in a different package variant — verify the ball map against your layout before substituting."},{"question":"What compliance documentation does STMicroelectronics provide for STM32F091RCY6TR?","answer":"The part is ROHS3 compliant. Standard documentation includes the ROHS certificate of compliance, material declaration, and the product change notification (PCN) history."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F091RCY6TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F091RCY6TR 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}}