{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F100RDT7B","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F100RDT7B","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F100RDT7B","factsUrl":"https://icboms.com/api/mcp/products/STM32F100RDT7B","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F100RDT7B, STM32F1 series, 32-bit ARM Cortex-M3 MCU, 24 MHz, 384 KB Flash, 32 KB SRAM, 51 I/O, 2 V to 3.6 V, -40 to 105 °C, 64-LQFP.","salesMarkdown":"## What the 24 MHz core speed means for your design The 24 MHz maximum is the defining performance ceiling of this device — it is roughly one-third the speed of the mainstream STM32F103 series. That makes the STM32F100RDT7B a fit for control-loop, sensor-fusion, and human-interface tasks where throughput is not the bottleneck. If your application needs faster math or tighter loop rates, the STM32F103 or STM32F4 families are the next tier up, but they also carry higher unit cost and a different peripheral set. ## Memory sizing and BOM fit The Flash is sufficient for moderate-complexity firmware — a bootloader, a real-time kernel, and several peripheral drivers — while the 32 KB SRAM handles a few kilobytes of data buffers and stack. If your firmware image exceeds 384 KB, you would need to step up to the STM32F103RE (512 KB) or move to a different series entirely. The 105 °C upper limit means it can sit near a motor drive or power supply without active cooling, but it is not rated for under-hood or downhole environments that exceed that junction temperature. The 51 I/O are distributed around all four sides, so a two-layer PCB is feasible for many designs if the routing is kept clean. The exposed pad (if present on this package variant) should be connected to ground with a thermal via array for best heat transfer. The STM32F100RDT7B includes DMA, a power-down reset (PDR), power-on reset (POR), programmable voltage detector (PVD), PWM timers, a temperature sensor, and a watchdog timer.","metaTitle":"STM32F100RDT7B ARM Cortex-M3 MCU, 24 MHz, 384 KB Flash","metaDescription":"STMicroelectronics STM32F100RDT7B 32-bit ARM Cortex-M3 MCU at 24 MHz with 384 KB Flash, 32 KB SRAM, 51 I/O, -40 to 105 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"24MHz","Series":"STM32F1","Package":"Tray","RAM Size":"32K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT","Connectivity":"I²C, IrDA, LINbus, SPI, UART/USART","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":"STM32F100","Program Memory Size":"384KB (384K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~105°C(TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"2V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.3142","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d0c6de1bb765e5c2bab08c793c43eb14.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F100RDT7B/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32F100RDT7B?","answer":"Within the STM32F1 value line, the STM32F100RBT7 is a pin-compatible lower-density sibling (128 KB Flash, 8 KB SRAM). The STM32F100RDT7B offers more Flash and RAM, so it is a direct upgrade path for firmware growth without a board respin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F100RDT7B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F100RDT7B 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}}