STM32H7A3ZIT6

ARM Cortex-M7 MCU at 280MHz with 2MB Flash, 1.4MB SRAM, LCD-TFT, JPEG, Octo-SPI, FDCAN, DFSDM, SMPS, high RAM-to-Flash ratio in LQFP-144.

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STM32H7A3ZIT6

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LQFP-144

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Description

Product Overview

The STM32H7A3ZIT6 is a high-performance 32-bit microcontroller from STMicroelectronics, featuring ARM Cortex-M7 32-bit with DP-FPU and DSP. The device integrates 2 MB (dual bank, read-while-write) + 1KB OTP of Flash memory and 1.4 MB (192KB TCM + 1.18MB user SRAM + 4KB backup) of SRAM, providing extensive memory resources for demanding embedded applications. Housed in a LQFP-144 package with Up to 168 (up to 164 5V-tolerant, up to 133 MHz fast I/Os) I/O pins, this MCU offers an exceptional combination of processing power, peripheral integration, and power efficiency. The device operates from 1.62V to 3.6V and supports industrial temperature range of -40°C to +85°C.

Key Specifications

Core ARM Cortex-M7 32-bit with DP-FPU and DSP
Maximum Frequency 280 MHz
Flash Memory 2 MB (dual bank, read-while-write) + 1KB OTP
SRAM 1.4 MB (192KB TCM + 1.18MB user SRAM + 4KB backup)
Package LQFP-144
Operating Voltage 1.62V to 3.6V
Operating Temperature -40°C to +85°C
I/O Pins Up to 168 (up to 164 5V-tolerant, up to 133 MHz fast I/Os)
2x 12-bit ADC up to 24 channels, up to 3.6 MSPS, 16-bit max with oversampling
DAC 3x 12-bit DAC (1 dual-channel + 1 single-channel)
DMA 5 DMA controllers: MDMA + 2x dual-port DMA + basic DMA + DFSDM DMA
Timers Up to 18 timers: 12x 16-bit, 2x motor control PWM, 3x LPTIM, 2x WDT, SysTick
USART/UART 5x USART + 5x UART + 1x LPUART
SPI/I2S 6x SPI, 4 with muxed full-duplex I2S, 1 in LP domain (up to 125 MHz)
I2C 4x I2C Fast-mode Plus (1 Mbit/s)
CAN 2x CAN FD (1 with TT-CAN time-triggered)
USB 1x USB OTG HS/FS
Other Peripherals LCD-TFT + Chrom-ART + JPEG Codec + 2x SAI + SPDIFRX + 2x SDMMC (133MHz) + DCMI + 2x Octo-SPI (140MHz) + FMC + DFSDM (9filt) + 2x Op-Amp + 2x Comp + RNG + SMPS + 2 power domains + PSSI
Performance 599 DMIPS / 2.14 DMIPS/MHz / 1414 CoreMark

Features

  • High-performance ARM core with FPU and DSP: 599 DMIPS / 2.14 DMIPS/MHz / 1414 CoreMark performance
  • Advanced memory architecture with TCM for deterministic real-time performance
  • Rich analog subsystem: 2x 12-bit ADC, 3x 12-bit DAC (1 dual-channel + 1 single-channel)
  • Multiple DMA controllers for autonomous data transfers
  • Advanced timers including motor control PWM, high-resolution timer, low-power timers
  • Extensive communication: 4x I2C Fast-mode Plus (1 Mbit/s), 5x USART + 5x UART + 1x LPUART, 6x SPI, 4 with muxed full-duplex I2S, 1 in LP domain
  • SMPS step-down converter for high power efficiency
  • Advanced graphics: LCD-TFT + Chrom-ART + JPEG hardware codec
  • Industrial temperature range, RoHS compliant, ECOPACK2 packaging

Applications

  • High-end HMI and display controllers with rich graphics
  • Industrial automation and smart factory controllers
  • IoT gateways with extensive peripheral connectivity
  • Consumer electronics with advanced graphical interfaces
  • Medical devices with display and data acquisition
  • Home automation and smart home central controllers
  • Audio processing and multimedia systems
  • Surveillance and security camera systems
  • Wearable devices with display (smart watch)
  • Battery-powered devices requiring high RAM and performance

The STM32H7A3ZIT6 is a 599 DMIPS performance microcontroller from STMicroelectronics, built on the ARM Cortex-M7 32-bit with DP-FPU and DSP. It integrates 2 MB (dual bank, read-while-write) + 1KB OTP of Flash memory and 1.4 MB (192KB TCM + 1.18MB user SRAM + 4KB backup) of SRAM, providing extensive resources for sophisticated embedded applications. The analog subsystem includes 2x 12-bit ADC offering 24 channels with high sampling rates, complemented by 3x 12-bit DAC (1 dual-channel + 1 single-channel) DAC outputs. Communication interfaces are comprehensive: 4x I2C Fast-mode Plus (1 Mbit/s), 5x USART + 5x UART + 1x LPUART, and 6x SPI, 4 with muxed full-duplex I2S, 1 in LP domain. Additional connectivity includes 2x CAN FD (1 with TT-CAN time-triggered), 1x USB OTG HS/FS, and specialized peripherals for graphics, audio, and storage. Housed in a LQFP-144 package with up to 168 I/O pins, the STM32H7A3ZIT6 operates from 1.62V to 3.6V across the -40°C to +85°C industrial temperature range. It is ideally suited for high-performance embedded systems requiring advanced processing, rich connectivity, and efficient power management.

The STM32H7A3ZIT6 operates on the ARM Cortex-M7 32-bit RISC architecture with a 6-stage superscalar, dual-issue pipeline featuring out-of-order execution. The core includes a double-precision FPU supporting IEEE 754 and a full set of DSP instructions. L1 cache combined with the ART Accelerator enables near 0-wait state execution from Flash memory. The multi-layer AXI and AHB bus matrices connect the core, DMA controllers, and peripherals to memory resources, enabling high-bandwidth parallel access. The Tightly Coupled Memory (TCM) provides deterministic single-cycle access for critical code and data. The smart power domain architecture allows independent clock gating and power switching for maximum efficiency. The integrated SMPS step-down converter provides high-efficiency power delivery, significantly reducing power consumption compared to LDO-only designs. Multiple low-power modes (Sleep, Stop, Standby, VBAT) offer progressive power reduction. The MDMA (Master DMA) controller handles high-bandwidth memory-to-memory transfers with linked list support, while dual-port DMAs manage peripheral-to-memory transfers. The dual-bank Flash with read-while-write enables seamless over-the-air firmware updates. The device supports boot from user Flash, system memory bootloader, or embedded SRAM.

Pin Group Type Function
VDD (multiple) Power Main power supply
VSS (multiple) Ground Ground
VDDA Power Analog power supply for ADC/DAC
VSSA Ground Analog ground
VBAT Power Battery backup for RTC and backup registers
VSW / FB Power SMPS step-down converter (external inductor)
NRST I/O Active-low reset
PA13 / PA14 I/O SWDIO / SWCLK (Serial Wire Debug)
PA9 / PA10 I/O USART1_TX/RX / I2C pins / TIM channels
PA2 / PA3 I/O USART2_TX/RX / ADC channels / TIM channels
PA5 / PA6 / PA7 I/O SPI1_SCK/MISO/MOSI / ADC channels
PB6 / PB7 I/O I2C1_SCL/SDA / USART1_TX/RX
PB10 / PB11 I/O I2C2_SCL/SDA / USART3 / SPI2
PC13 I/O GPIO / TAMPER / RTC_OUT
PC14 / PC15 I/O LSE oscillator (32.768kHz) / GPIO
PH0 / PH1 (or PF0/PF1) I/O HSE oscillator pins
Total I/O – Up to 168 I/O pins
  • High-end HMI and display controllers with rich graphics
  • Industrial automation and smart factory controllers
  • IoT gateways with extensive peripheral connectivity
  • Consumer electronics with advanced graphical interfaces
  • Medical devices with display and data acquisition
  • Home automation and smart home central controllers
  • Audio processing and multimedia systems
  • Surveillance and security camera systems
  • Wearable devices with display (smart watch)
  • Battery-powered devices requiring high RAM and performance
Model Manufacturer Key Difference
STM32H7A3IIT6 STMicroelectronics LQFP-176 package, same core/Flash/RAM, more I/O
STM32H7B3ZIT6 STMicroelectronics Same specs, adds crypto/hash, OTFDEC on Octo-SPI
STM32H723ZGT6 STMicroelectronics 550MHz Cortex-M7, 1MB Flash, 564KB SRAM, lower cost
STM32H743ZIT6 STMicroelectronics 480MHz M7, 2MB Flash, Ethernet, higher performance
STM32F767ZIT6 STMicroelectronics 216MHz M7, 2MB Flash, Ethernet, lower power, cost-optimized
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Quality Assurance

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • Automotive Electronics: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • Medical Devices: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

Contact Us

If you have inquiries about our quality standards, inspection procedures or product certification documents, please feel free to contact us:

 

Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

Shipping & Payment

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
  1. Accepted Payment Methods
  • T/T (Bank Wire Transfer): The primary settlement method for bulk orders and a widely used international payment channel.
  • PayPal: Ideal for small orders, sample orders and quick payments.

  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
  1. Shipping Fee Rules
  • Shipping cost is calculated based on package weight, volume, destination and delivery method.
  • Both freight prepaid and freight collect are available. Please provide your courier account number in advance if you choose freight collect.
  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
  1. Shipment Tracking
     

    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
  • We shall not be liable for any losses caused by incorrect delivery address, wrong contact information or the buyer’s refusal to complete customs clearance.

5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@ic-vendor.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@ic-vendor.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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