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STMicroelectronics STM32H735G-DK

Name: STM32H735G-DK
Brand: STMicroelectronics
SKU: STM32H735G-DK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32H735G-DK

Manufacturer:: STMicroelectronics

Category:: Embedded MCU, DSP Evaluation Boards

Package:

Datasheet:: STM32H735G-DK.pdf

Description:: DISCOVERY KIT WITH STM32H735IG M

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Inventory:396

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Product details

Overview

STM32H735G-DK from STMicroelectronics is a high-performance Arm® Cortex®-M7 microcontroller operating at 550 MHz, featuring 1 MB flash with ECC, 564 KB SRAM (all with ECC), dual 16-bit ADCs up to 3.6 MSPS, triple FD-CAN interfaces, Ethernet MAC, USB 2.0 HS/FS OTG, and hardware crypto acceleration (AES-128/192/256, SHA-2, HMAC). It targets real-time industrial HMI, motor control gateways, and secure connected edge devices.

For engineers reviewing the STM32H735G-DK datasheet, STM32H735G-DK pinout, STM32H735G-DK application, or STM32H735G-DK equivalent, key selection factors include its dual-core-capable memory architecture (128 KB TCM RAM + 432 KB system RAM), on-the-fly Octo-SPI decryption (OTFDEC), Chrom-ART graphical acceleration, and integrated DCDC regulator in VFQFPN68 package - critical for power-constrained embedded designs requiring deterministic latency and cryptographic integrity.

Technical Context

The STM32H735G-DK implements a single Arm Cortex-M7 core with double-precision FPU, L1 cache (32 KB I-cache + 32 KB D-cache), and MPU - enabling zero-wait-state execution from flash and external memories. Its memory subsystem includes ECC-protected SRAM partitioned into TCM (for time-critical data/instructions) and system RAM, plus flexible external memory support via FMC and dual Octo-SPI interfaces.

It integrates domain-specific accelerators: CORDIC for trigonometric computation, FMAC for digital filtering, Chrom-ART (DMA2D) for GUI rendering offload, and dual OTFDEC engines for AES-128 CTR-mode decryption of external Octo-SPI memory - all coordinated by four independent DMA controllers including MDMA with linked-list support.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M7 @ 550 MHz with DP-FPU, L1 cache (32 KB I/D), MPU, 1177 DMIPS
Memory	1 MB flash (ECC), 564 KB SRAM (ECC): 128 KB TCM + 432 KB system + 4 KB backup
Analog Peripherals	2×16-bit ADC (3.6 MSPS), 1×12-bit ADC (5 MSPS), 2×OPAMP (8 MHz GBW), 2×DAC (12-bit)
Communication	3×FD-CAN, Ethernet MAC + DMA, USB 2.0 HS/FS OTG, 5×USART/UART, 6×SPI/I2S, 2×SAI, SPDIFRX
Security & Crypto	AES-128/192/256, TDES, SHA-1/SHA-2, HMAC, RNG, ROP/PC-ROP, tamper detection, SB-SFU bootloader
Graphics & Acceleration	Chrom-ART (DMA2D), CORDIC, FMAC, 2×OTFDEC AES-128 engines for Octo-SPI XiP decryption
Package	VFQFPN68 (8 × 8 mm, 0.4 mm pitch), DCDC regulator integrated, ECOPACK2 compliant

Pinout & Package

STM32H735G-DK is packaged in a 68-pin Very Thin Quad Flat No-lead (VFQFPN68) housing measuring 8 mm × 8 mm with 0.4 mm pitch, optimized for space-constrained industrial and automotive applications. The package integrates a DCDC step-down regulator and supports full I/O voltage range (1.62–3.6 V).

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA, VDDIO2	Power supply inputs	Core (1.62–3.6 V), analog (1.62–3.6 V), and I/O domain supplies; decoupling required per datasheet Section 6.3.6
VCAP_1, VCAP_2	Internal LDO/DCDC stabilization	External 2.2 µF ceramic capacitors mandatory for SMPS stability (DS13312 Rev 4, Section 6.3.3)
NRST	Active-low reset input	Asynchronous reset with internal pull-up; minimum pulse width 20 ns; supports tamper-triggered reset
PA13/PA14	SWD debug interface	Serial Wire Debug clock/data pins; compatible with standard ST-LINK v2/v3 probes without external level shifters
PD0/PD1	OSC_IN/OSC_OUT	4–50 MHz external crystal connection for HSE; supports bypass mode for external clock source
PH13/PH14	ETH_MDC/ETH_MDIO	Ethernet management interface for PHY configuration via MDIO bus; requires 50 Ω termination

Key Features

Feature	Design Value
L1 Cache + ECC Memory	32 KB instruction + 32 KB data cache enables zero-wait-state execution; ECC prevents silent data corruption in safety-critical firmware
Dual TCM Architecture	128 KB data TCM + configurable instruction TCM allows deterministic real-time response for motor control loops and interrupt handlers
Hardware Crypto Suite	Dedicated CRYP/HASH accelerators reduce CPU load by >90% vs software AES/SHA-2; supports secure boot via SB-SFU
Chrom-ART Accelerator	DMA2D engine performs 2D graphics composition (alpha blending, color format conversion) without CPU intervention - cuts GUI rendering time by ~70%
Octo-SPI with OTFDEC	Two Octo-SPI interfaces support XiP from encrypted external flash; dual OTFDEC engines enable simultaneous decryption of two memory regions

Applications

Industrial HMI Gateway

Secure Edge Node

Use Scenario: Programmable logic controller (PLC) with touchscreen HMI, fieldbus bridging (CANopen → EtherNet/IP), and local data logging.

IC Role / Device Role / Timing Role: Central application processor managing GUI rendering, protocol translation, real-time I/O scanning, and encrypted firmware updates.

Use Value: Chrom-ART offloads display composition; triple FD-CAN handles multi-network diagnostics; hardware crypto ensures OTA update authenticity and confidentiality.

Use Scenario: Smart sensor node aggregating vibration, temperature, and pressure data for predictive maintenance in oil & gas infrastructure.

IC Role / Device Role / Timing Role: Secure data concentrator performing sensor fusion, AES-encrypted telemetry transmission, and tamper-responding shutdown.

Use Value: Dual 16-bit ADCs capture high-fidelity analog waveforms; ROP/PC-ROP blocks code injection; backup SRAM retains fault logs during brownout.

Motor Control Hub

Medical Imaging Interface

Use Scenario: Multi-axis servo drive with field-oriented control (FOC), encoder feedback, and safety-rated STO monitoring.

IC Role / Device Role / Timing Role: Real-time motion controller executing FOC loops at ≤10 µs intervals while managing CAN FD diagnostics and USB service port.

Use Value: 550 MHz M7 core + TCM RAM guarantees sub-microsecond interrupt latency; 2×OPAMPs condition resolver signals; CORDIC accelerates sine/cosine calculations.

Use Scenario: Portable ultrasound device requiring low-latency image preprocessing, HDMI-CEC remote control, and battery-efficient operation.

IC Role / Device Role / Timing Role: Image pipeline processor handling DCMI camera input, gamma correction, and HDMI video output with audio sync.

Use Value: DCMI interface captures 12-bit raw sensor data at 40 MHz pixel clock; SAI+SPDIFRX supports audio feedback; DCDC regulator extends battery life by 35% vs LDO-only solutions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32H743VI	Higher flash (2 MB) and RAM (1 MB), adds second Cortex-M7 core (dual-core mode), no integrated DCDC in LQFP100	Required for asymmetric multiprocessing (AMP) or Linux-capable RTOS workloads; larger footprint (100-pin LQFP)	Select when dual-core scheduling or >1 MB code size justifies cost and board area increase
STM32H750VB	Same core/peripherals but reduced flash (128 KB), no Ethernet MAC, no USB HS, single 16-bit ADC	Suitable for cost-sensitive motor control or sensor hub where network connectivity is handled externally	Choose for BOM cost reduction where Ethernet/USB HS and dual ADC are unnecessary

Compared with STM32H735G-DK, the STM32H743VI enables true dual-core operation and larger memory for complex firmware, while the STM32H750VB trades peripheral richness for lower unit cost - making the H735G-DK the optimal balance of integrated security, graphics, and power efficiency in compact VFQFPN68 packaging.

Availability

STM32H735G-DK is available at Aetrix Electronics and suitable for industrial HMI gateways, secure edge nodes, and motor control hubs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for STM32H735G-DK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time performance, advanced security, and rich peripheral integration - specifically engineered for industrial automation, medical devices, and intelligent edge systems where deterministic latency and functional safety coexist.

FAQ

Does STM32H735G-DK support dual-core operation?

No. The STM32H735G-DK contains a single Arm Cortex-M7 core. Dual-core capability is exclusive to higher-tier variants like the STM32H743/753, which integrate a second M7 core and additional interconnect resources. This part delivers maximum single-core performance (550 MHz) with optimized memory hierarchy and accelerators instead of redundant cores.

What is the role of VCAP pins, and what capacitor value is required?

The VCAP_1 and VCAP_2 pins stabilize the internal SMPS DCDC regulator. Per DS13312 Rev 4 Section 6.3.3, two 2.2 µF X7R ceramic capacitors (±10%, 6.3 V rating) must be placed as close as possible to each VCAP pin, with direct low-inductance connections to ground. Omission or undersizing causes unstable core voltage and system lockup under load.

Can the STM32H735G-DK execute code directly from external Octo-SPI flash?

Yes - via eXecute-in-Place (XiP) mode supported by both Octo-SPI interfaces. When combined with the integrated OTFDEC engines, it enables secure XiP from AES-128-encrypted external flash without exposing decrypted code to external buses, satisfying IEC 62443-3-3 SL2 requirements for firmware confidentiality.

Is the Chrom-ART Accelerator compatible with common GUI frameworks like TouchGFX or emWin?

Yes. ST provides official middleware drivers and HAL libraries that expose Chrom-ART (DMA2D) functionality to TouchGFX 4.2+, emWin 5.50+, and ST's X-CUBE-DISPLAY expansion package. These integrations enable hardware-accelerated layer blending, rotation, and alpha compositing - reducing CPU utilization from >60% to <15% during dynamic UI rendering.

STM32H735G-DK Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STM32H7

Packaging:: Bulk

Product Status:: Active

Type:: MCU 32-Bit

Core Processor:: ARM® Cortex®-M7

Platform:: Discovery

Utilized IC / Part:: STM32H735IG

Mounting Type:: Fixed

Contents:: Board(s), LCD

STM32H735G-DK FAQ

1.How can I place an order for STM32H735G-DK through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32H735G-DK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32H735G-DK reliable?

The price and inventory of STM32H735G-DK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32H735G-DK is usually 5 days.

3.What payment methods are accepted for STM32H735G-DK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32H735G-DK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32H735G-DK?

STM32H735G-DK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32H735G-DK order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32H735G-DK?

For technical support, including STM32H735G-DK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32H735G-DK requirements.

6.How does Aetrix verify that STM32H735G-DK is sourced from the original manufacturer or authorized distributors?

All STM32H735G-DK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32H735G-DK meets industry standards.

7.What is the process for return or replacement of STM32H735G-DK?

All STM32H735G-DK units undergo pre-shipment inspection (PSI). If there is an issue with STM32H735G-DK, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32H735G-DK part is unused and in its original packaging.

Return procedure for STM32H735G-DK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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