{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"STM32H7A3ZIT6Q","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"STM32H7A3ZIT6Q","canonicalUrl":"https://icboms.com/stmicroelectronics/STM32H7A3ZIT6Q","factsUrl":"https://icboms.com/api/mcp/products/STM32H7A3ZIT6Q","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics STM32H7 series STM32H7A3ZIT6Q, ARM Cortex-M7 32-Bit Single-Core MCU, 280MHz, 2MB FLASH, 1.4M x 8 RAM, 112 I/O, 144-LQFP, -40°C~85°C.","salesMarkdown":"The 112 I/O lines, routed through a 144-LQFP package (20x20 mm footprint), provide ample GPIO for sensor arrays, display interfaces, and motor-control feedback. ## 1.4 MB RAM and 280 MHz — sizing the compute and data budget The 280 MHz Cortex-M7 core handles DSP-style math and real-time control loops that would stall a 100 MHz MCU. With 1.4 MB of SRAM, this part can buffer multiple camera frames, hold a large audio sample pool, or run a TCP/IP stack with generous socket buffers — all on-chip. The 2 MB Flash supports a full-featured firmware image with a bootloader, application code, and a file system for configuration data. For designs that need more memory, the EBI/EMI interface (listed in the connectivity block) lets you attach external SDRAM or NOR Flash without a glue-logic CPLD. ## Connectivity and peripherals — what the 112 I/O actually connects to The peripheral set covers industrial and consumer interfaces: CANbus for automotive or machinery networks, USB OTG for device-to-host communication, multiple SPI and I²C buses for sensors and converters, SAI for I²S audio, and an LCD parallel interface for TFT displays. The 20-channel 16-bit ADC and three 12-bit DAC handle analog front-end tasks without an external converter. Brown-out detect and POR simplify power sequencing, while the DMA engine moves data without loading the core. ## Package and supply — layout decisions for the 144-LQFP The 144-LQFP (20x20 mm) is a standard QFP with 0.5 mm pitch — easier to route and rework than a BGA of equivalent I/O count. The supply range of 1.62 V to 3.6 V lets it run from a single 3.3 V rail or a 1.8 V low-power domain. Surface-mount assembly follows typical LQFP profiles; no special bake-out is required if the moisture-barrier bag is intact.","metaTitle":"STM32H7A3ZIT6Q STM32H7 MCU, 280 MHz Cortex-M7, 2 MB Flash","metaDescription":"STMicroelectronics STM32H7A3ZIT6Q 32-bit ARM Cortex-M7 MCU at 280 MHz with 2 MB Flash, 1.4 MB RAM, 112 I/O in 144-LQFP. Industrial temp -40°C 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":"112","Core Processor":"ARM® Cortex®-M7","Package / Case":"144-LQFP","Product Status":"Active","Data Converters":"A/D 20x16b; 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":"144-LQFP (20x20)","Voltage - Supply (Vcc/Vdd)":"1.62V ~ 3.6V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$13.6154","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 STM32H7A3ZIT6Q in this component family?","answer":"The STM32H7 series includes multiple density and feature variants in the 144-LQFP package. Within the STM32H7A3 line, devices share the same footprint and pinout, differing in Flash and RAM sizes."},{"question":"What is STM32H7A3ZIT6Q's listed speed on this component line?","answer":"The STM32H7A3ZIT6Q is rated for a 280 MHz core speed on the ARM Cortex-M7 processor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/STM32H7A3ZIT6Q","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/STM32H7A3ZIT6Q when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T12:32:39.369Z","lastPublished":"2026-07-16T12:32:39.369Z","indexable":true}}