{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32H7A3LIH6Q","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32H7A3LIH6Q","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32H7A3LIH6Q","factsUrl":"https://icboms.com/api/mcp/products/STM32H7A3LIH6Q","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32H7A3LIH6Q, STM32H7 series, 32-bit ARM Cortex-M7 MCU, 280MHz, 2MB Flash, 1.4MB RAM, 168 I/O, 225-TFBGA (13x13), -40 to 85°C, 1.62 to 3.6V.","salesMarkdown":"The 280 MHz core speed, combined with the Cortex-M7's single-cycle multiply-accumulate and double-precision FPU, makes this part a fit for real-time control loops in motor drives, audio processing pipelines, and graphical HMI systems that would otherwise need a separate DSP or FPGA. The 1.4 MB RAM is unusually large for a single-core MCU in this package class — enough to hold a full frame buffer for a 480x272 TFT display with a touch overlay, or to run a dual-bank OTA firmware update scheme without external SDRAM. The 168 general-purpose I/O lines, spread across a 225-ball TFBGA (13x13 mm), give enough pins to interface a parallel RGB LCD, a camera sensor, and multiple UART/SPI peripherals simultaneously. The supply range spans 1.62 V to 3.6 V, which lets the core run at 1.8 V for lower dynamic power while the I/O banks operate at 3.3 V to interface with legacy peripherals. ## Connectivity and peripheral set — one chip for the fieldbus and HMI This peripheral density lets a single MCU handle the fieldbus gateway, the local HMI display, and the sensor acquisition chain without external bridge chips. The EBI/EMI memory controller can map external SRAM, NOR Flash, or a parallel LCD controller directly into the 32-bit address space. Data converters include 24 analog inputs multiplexed into a 16-bit ADC and three 12-bit DAC outputs — enough for simultaneous current sensing on a three-phase motor drive plus a reference voltage output. ## Package and assembly — 225-TFBGA (13x13) The 225-ball TFBGA measures 13x13 mm with a 0.8 mm ball pitch. This is a four-layer-PCB-friendly pitch — escape routing on two signal layers is feasible without microvias. The 168 I/O lines are distributed across the ball grid, so the PCB layout needs careful fan-out planning if all peripherals are used simultaneously. MSL 3 out of the bag; bake before reflow if the moisture barrier bag has been open past the floor-life window. Surface-mount only. The thermal pad at the center of the BGA carries the bulk of the junction-to-board heat path; a via stitch under the pad is recommended for continuous operation above 400 mA core current. ## Lifecycle and supply posture There is no NRND notice or last-time-buy schedule attached to this base number.","metaTitle":"STM32H7A3LIH6Q STM32H7 MCU, 280MHz Cortex-M7, 2MB Flash","metaDescription":"STMicroelectronics STM32H7A3LIH6Q 32-bit ARM Cortex-M7 MCU at 280MHz with 2MB Flash, 1.4MB RAM, 168 I/O, 225-TFBGA. Industrial temp -40 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":"280MHz","Series":"STM32H7","Package":"Tray","RAM Size":"1.4M 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, HDMI-CEC, I²C, IrDA, LINbus, MDIO, MMC/SD/SDIO, SAI, SPDIF, SPI, SWPMI, UART/USART, USB OTG","Mounting Type":"Surface Mount","Number of I/O":"168","Core Processor":"ARM® Cortex®-M7","Package / Case":"225-TFBGA","Product Status":"Active","Data Converters":"A/D 24x16b; D/A 3x12b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"STM32H7A3","Program Memory Size":"2MB (2M x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"225-TFBGA (13x13)","Voltage - Supply (Vcc/Vdd)":"1.62V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$21.0700","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cf150803bf91399bd59862fc1b86c6e1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to STM32H7A3LIH6Q in the STM32H7 family?","answer":"Within the STM32H7A3 line, the density variants share the same 225-TFBGA footprint and peripheral map, differing only in Flash and RAM size. For a higher-performance sibling, the STM32H743 series offers a dual-core Cortex-M7 + M4 option but uses a different pinout in the same package. Verify compatibility against the STM32H7 reference manual before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32H7A3LIH6Q","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32H7A3LIH6Q when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T13:18:06.764Z","lastPublished":"2026-07-16T13:18:06.764Z","indexable":true}}