{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F446RET6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F446RET6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F446RET6","factsUrl":"https://icboms.com/api/mcp/products/STM32F446RET6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F4 series STM32F446RET6, ARM Cortex-M4, 32-Bit Single-Core, 180MHz, 512KB Flash, 128K x 8 RAM, 64-LQFP, -40°C ~ 85°C.","salesMarkdown":"That core includes a single-precision FPU and DSP instructions, so it handles real-time control loops, FFTs, and sensor fusion without an external DSP. The 512 KB Flash (512K x 8) and 128 KB SRAM (128K x 8) give enough room for a full RTOS, a TCP/IP stack, and a moderate data buffer — no external memory needed for many applications. ## Connectivity and peripherals — what is on the bus This MCU packs a wide set of serial interfaces: CANbus, I²C, SPI, UART/USART, USB OTG, and even SPDIF-Rx and SAI for audio. The EBI/EMI interface can connect external SRAM, NOR Flash, or an LCD controller. With 50 I/Os in a 64-LQFP package, you have enough pins for a keypad, a few sensors, and a parallel display bus without multiplexing. The 64-LQFP (10x10 mm) package is surface-mount but still hand-solderable for prototyping; it also keeps PCB routing simpler than a BGA. The 50 I/Os are all 5 V-tolerant on the STM32F4 family, so you can interface directly with legacy 5 V logic without level shifters. The base product number is STM32F446, so pin-compatible variants with different memory or package options (e.g., STM32F446VET6 in 100-pin LQFP) exist within the same family.","metaTitle":"STM32F446RET6 STM32F4 MCU, ARM Cortex-M4 180 MHz","metaDescription":"STM32F446RET6 32-bit MCU with ARM Cortex-M4 core at 180 MHz, 512KB Flash, 128KB SRAM, rich connectivity. Active lifecycle, industrial temp.","metaKeywords":null},"attributes":{"series":"STM32F4","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"STMicroelectronics","Speed":"180MHz","Series":"STM32F4","Package":"Tray","RAM Size":"128K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"50","Core Processor":"ARM® Cortex®-M4","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":"STM32F446","Program Memory Size":"512KB (512K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"64-LQFP (10x10)","Voltage - Supply (Vcc/Vdd)":"1.7V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.74839","priceTiers":[{"qty":1,"price":"$13.74839","currency":"USD"},{"qty":10,"price":"$11.80612","currency":"USD"},{"qty":30,"price":"$10.62450","currency":"USD"},{"qty":100,"price":"$9.63213","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cd1250ee9b471f9370d29b0641a72b62.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F446RET6/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between STM32F446RET6 and STM32F446VET6?","answer":"The STM32F446VET6 is a higher-pin-count variant (100-pin LQFP vs 64-pin LQFP for the RET6), offering more I/Os (81 vs 50) and additional package options. The VET6 is the choice if your design needs more GPIO or a larger footprint for routing."},{"question":"What development tools work with STM32F446RET6?","answer":"Standard ARM Cortex-M4 toolchains are compatible: STM32CubeIDE (free, STMicroelectronics), Keil MDK, IAR EWARM, and GCC-based toolchains. The SWD debug interface is available on the 64-LQFP package for programming and debugging with a J-Link or ST-Link probe."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F446RET6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F446RET6 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-13T09:46:08.160Z","lastPublished":"2026-08-13T09:46:08.160Z","indexable":true}}