{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32F439IIT6","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32F439IIT6","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32F439IIT6","factsUrl":"https://icboms.com/api/mcp/products/STM32F439IIT6","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32F4 series ARM Cortex-M4 MCU, 32-bit single-core, 180 MHz, 2 MB Flash, 256 KB SRAM, 176-LQFP (24x24 mm), -40 to 85 °C, ROHS3.","salesMarkdown":"## 180 MHz Cortex-M4 with 2 MB flash — what the ratings mean for the BOM The STM32F439IIT6 is an STM32F4-series ARM Cortex-M4 MCU running at 180 MHz, with 2 MB of on-chip Flash and 256 KB SRAM. This is the high-end density variant in the STM32F4 line — the flash footprint holds a full RTOS, application stack, and file system without external memory, while the 256 KB SRAM gives the scheduler and data buffers room to breathe without cache-line thrashing. The 180 MHz clock rate is the core's ceiling — real throughput depends on flash wait states at that speed, but the Cortex-M4 with single-cycle multiply and hardware FPU means the 225 DMIPS figure (typical for this core at 180 MHz) is achievable for signal-chain math like FFT or motor-control observers without cycle-counting every multiply. ## Connectivity and peripheral set — Ethernet, CAN, USB OTG, and parallel bus The 140 I/Os in the 176-LQFP package give enough headroom to route a parallel TFT LCD interface alongside a 16-bit external memory bus and still have pins left for sensors and actuators. The 24-channel 12-bit ADC and dual 12-bit DAC cover analog front-end capture and control-loop output without an external converter. The ADC samples at up to 2.4 MSPS in interleaved mode — fast enough for current-sense in a motor drive or vibration monitoring on a production line. ## Package, supply, and temperature grade — board-fit realities The 176-LQFP (24x24 mm) is a 0.5 mm-pitch quad flat pack — the outer rows fan out on a two-layer board, but the inner power/ground pads and the EBI/EMI bus traces will push a design to four layers for signal integrity. The internal oscillator and brown-out detect reduce external component count in these environments — no external resonator needed for the core clock, and the BOR resets the part cleanly on a supply sag. The base product number is STM32F439, meaning the die, memory map, and peripheral set are shared across the F439 family — a BOM using the 144-pin or 208-pin sibling can migrate to this 176-pin variant with a PCB layout change but the same firmware binary, assuming the peripheral allocation is compatible. ## Sourcing posture — quoted to order, traceable supply Date-code and marking consistency are confirmed at the point of receipt — the laser-etched top mark on the STM32F4 series has a specific font and kerning that a counterfeit check verifies before the stock is allocated to a BOM. Pricing and lead time are confirmed at RFQ against the specific quantity and delivery window.","metaTitle":"STM32F439IIT6 STM32F4 MCU, 180 MHz Cortex-M4, 2 MB Flash","metaDescription":"STMicroelectronics STM32F439IIT6 ARM Cortex-M4 MCU, 180 MHz, 2 MB Flash, 256 KB SRAM, 176-LQFP. Active, ROHS3. Ethernet, CAN, USB OTG. Quoted to order.","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":"256K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT","Connectivity":"CANbus, EBI/EMI, Ethernet, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"140","Core Processor":"ARM® Cortex®-M4","Package / Case":"176-LQFP","Product Status":"Active","Data Converters":"A/D 24x12b; D/A 2x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32F439","Program Memory Size":"2MB (2M x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"176-LQFP (24x24)","Voltage - Supply (Vcc/Vdd)":"1.8V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$20.6600","priceTiers":[{"qty":1,"price":"$20.66000","currency":"USD"},{"qty":10,"price":"$18.99100","currency":"USD"},{"qty":40,"price":"$18.20400","currency":"USD"},{"qty":80,"price":"$16.03925","currency":"USD"},{"qty":240,"price":"$15.25204","currency":"USD"},{"qty":440,"price":"$14.26805","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7ccff475f92d57ddcb2c7509216e5655.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/STM32F439IIT6/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for STM32F439IIT6?","answer":"Pricing and stock levels are confirmed at quote time against your BOM quantity and target delivery window. Submit an RFQ through this listing — availability is verified across independent distribution channels, and lead time is quoted per order. No price or stock figure is published here because the spot market moves daily."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32F439IIT6","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32F439IIT6 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}}