{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F103RET6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F103RET6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F103RET6","factsUrl":"https://icboms.com/api/mcp/products/STM32F103RET6","rawCanonicalId":null},"summary":{"shortDescription":"ST STM32F103RET6, STM32F1 series, 32-bit ARM Cortex-M3 MCU, 72 MHz core, 512 KB Flash, 64 KB RAM, 51 GPIO, CAN/USB/SPI/I²C/UART, 2V–3.6V supply, -40°C to 85°C, 64-LQFP, Tray.","salesMarkdown":"The STM32F103RET6: This is a workhorse MCU for control, instrumentation, and communication tasks where the peripheral mix and memory size hit a sweet spot between cost and capability. ## 72 MHz core — timing and throughput The 72 MHz clock is the maximum for this Cortex-M3 implementation. 512 KB of Flash is enough for a full-featured firmware stack: a real-time OS, USB stack, CANopen or Modbus library, plus application logic. The 64 KB SRAM supports moderate-sized data buffers (e.g., 8–16 KB for USB endpoints, a few KB for CAN message queues) without external memory. If your application needs larger frame buffers or extensive data logging, the 64 KB RAM may be the tighter constraint — check your heap and stack budget early. ## Peripheral set — CAN, USB, and serial interfaces The 51 GPIOs give plenty of headroom for local sensors, switches, and indicators alongside the serial interfaces.","metaTitle":"STM32F103RET6 STM32F1 ARM Cortex-M3 MCU, 72 MHz","metaDescription":"STM STM32F103RET6 32-bit ARM Cortex-M3 MCU, 72 MHz core, 512 KB Flash, 64 KB RAM, 51 GPIO, CAN/USB/SPI/I²C, -40°C to 85°C, 64-LQFP.","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":"Tray","RAM Size":"64K 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-LQFP","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":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.0500","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72e2217711e2aa33719949448f146656.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F103RET6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32F103RET6 and STM32F103RCT6?","answer":"The STM32F103RCT6 is a pin-compatible sibling in the same STM32F103 series, but with 256 KB Flash instead of 512 KB. Both share the same 72 MHz Cortex-M3 core, 64 KB RAM, 51 GPIO, and peripheral set. The RET6 is the higher-density option for firmware that exceeds 256 KB."},{"question":"What interfaces does STM32F103RET6 support?","answer":"It supports CANbus, I²C, IrDA, LINbus, SPI, UART/USART, and USB (full-speed device). This covers most industrial and embedded communication needs."},{"question":"How many GPIO pins does STM32F103RET6 have?","answer":"The STM32F103RET6 has 51 general-purpose I/O pins in the 64-pin LQFP package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F103RET6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F103RET6 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}}