{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F103RCY6CTR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F103RCY6CTR","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F103RCY6CTR","factsUrl":"https://icboms.com/api/mcp/products/STM32F103RCY6CTR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F1 series STM32F103RCY6CTR, 32-bit ARM Cortex-M3 MCU, 72 MHz, 256 KB Flash, 48 KB SRAM, 64-WLCSP (4.4x4.4 mm), -40°C to 85°C, 2V to 3.6V supply.","salesMarkdown":"## 72 MHz ARM Cortex-M3 with 256 KB Flash in a 64-WLCSP The 64-WLCSP package (4.4x4.4 mm) is the key differentiator here — it's the smallest footprint in the STM32F103RCY6CTR ordering code family, designed for space-constrained PCBs where every square millimeter counts. This MCU integrates a rich set of peripherals: DMA, motor control PWM, programmable voltage detector (PVD), power-on reset (POR), brown-out reset (PDR), a temperature sensor, and a watchdog timer. The 51 general-purpose I/O pins give flexibility for parallel sensor arrays or display interfaces. The supply voltage range of 2V to 3.6V allows operation from a single Li-ion cell or a 3.3V rail with margin for brown-out conditions. The internal oscillator reduces external component count, though the clock tree still needs careful configuration for USB timing. ## Data converters and analog integration The STM32F103RCY6CTR includes a 12-bit ADC with 16 multiplexed channels and two 12-bit DACs, enabling direct sensor readout and analog output without an external converter.","metaTitle":"STM32F103RCY6CTR ARM Cortex-M3 MCU, 72 MHz, 256 KB Flash","metaDescription":"STMicroelectronics STM32F103RCY6CTR 32-bit ARM Cortex-M3 MCU at 72 MHz, 256 KB Flash, 48 KB SRAM, 64-WLCSP package. Industrial temp -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"72MHz","Series":"STM32F1","Package":"Tape & Reel (TR)","RAM Size":"48K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT","Connectivity":"CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"51","Core Processor":"ARM® Cortex®-M3","Package / Case":"64-UFBGA, WLCSP","Product Status":"Active","Data Converters":"A/D 16x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F103","Program Memory Size":"256KB (256K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-WLCSP (4.4x4.4)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7725","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72e2217711e2aa33719949448f146656.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F103RCY6CTR/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32F103RCY6CTR?","answer":"Within the STM32F103 series, the STM32F103RCT6 (LQFP-64 package) is a common alternative with the same 256 KB Flash and 48 KB SRAM, but in a larger LQFP footprint. For a WLCSP pin-compatible alternative, the STM32F103R8Y6 (64 KB Flash) shares the same package but has less program memory. Verify the specific memory and peripheral requirements before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F103RCY6CTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F103RCY6CTR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}