STMicroelectronics

STM32H743ZIT6 - 480MHz Cortex-M7 MCU, 2MB Flash | STMicroelectronics

Name: STM32H743ZIT6
Brand: STMicroelectronics
Price: 18.50 USD
Availability: InStock

MPN: STM32H743ZIT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

1.62 V to 3.6 V Vdss LQFP144 (20x20 mm) Package 480 MHz Speed 2 MB Memory

$18.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$18.5	$18.50
10	$16.75	$167.50
100	$14.9	$1,490.00
500	$13.2	$6,600.00
1,000	$11.85	$11,850.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32H743ZIT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32H743ZIT6TR

✅ Drop-In

📦 LQFP144

same die, tape-and-reel packaging variant

📋 Reference alternative (not in catalog)

STM32H753ZIT6

✅ Drop-In

📦 LQFP144

adds hardware crypto/hash, same package and pinout

📋 Reference alternative (not in catalog)

STM32H743ZIT6U

✅ Drop-In

📦 LQFP144

same package, but different pinout (U suffix), not pin-compatible

📋 Reference alternative (not in catalog)

STM32H743ZIT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M7
Max Clock Speed	480 MHz
Flash Memory	2 MB
SRAM	1 MB
Supply Voltage	1.62 V to 3.6 V
Package	LQFP144 (20x20 mm)
GPIO Pins	114
ADC Resolution	16-bit
DAC Resolution	12-bit
Communication Interfaces	USART, SPI, I2C, CAN, USB, Ethernet
Operating Temperature	-40C to +85C
Mounting Type	Surface Mount
RoHS Status	Compliant
DSP Capability	Yes (with FPU)
DMA Channels	16

STM32H743ZIT6 Pin Configuration

Pin 1	PE2 — GPIO / alternate functions
Pin 2	PE3 — GPIO / alternate functions
Pin 3	PE4 — GPIO / alternate functions
Pin 4	PE5 — GPIO / alternate functions
Pin 5	PE6 — GPIO / alternate functions
Pin 6	VBAT — Battery backup supply
Pin 7	PC13 — GPIO / RTC tamper
Pin 8	PC14 — GPIO / OSC32_IN
Pin 9	PC15 — GPIO / OSC32_OUT
Pin 10	PF0 — GPIO / alternate functions
Pin 11	PF1 — GPIO / alternate functions
Pin 12	PF2 — GPIO / alternate functions
Pin 13	PF3 — GPIO / alternate functions
Pin 14	PF4 — GPIO / alternate functions
Pin 15	PF5 — GPIO / alternate functions
Pin 16	VSS — Ground
Pin 17	VDD — Power supply
Pin 18	PF6 — GPIO / alternate functions
Pin 19	PF7 — GPIO / alternate functions
Pin 20	PF8 — GPIO / alternate functions
Pin 21	PF9 — GPIO / alternate functions
Pin 22	PF10 — GPIO / alternate functions
Pin 23	PF11 — GPIO / alternate functions
Pin 24	PF12 — GPIO / alternate functions
Pin 25	PF13 — GPIO / alternate functions
Pin 26	PF14 — GPIO / alternate functions
Pin 27	PF15 — GPIO / alternate functions
Pin 28	VSS — Ground
Pin 29	VDD — Power supply
Pin 30	PG0 — GPIO / alternate functions
Pin 31	PG1 — GPIO / alternate functions
Pin 32	PG2 — GPIO / alternate functions
Pin 33	PG3 — GPIO / alternate functions
Pin 34	PG4 — GPIO / alternate functions
Pin 35	PG5 — GPIO / alternate functions
Pin 36	PG6 — GPIO / alternate functions
Pin 37	PG7 — GPIO / alternate functions
Pin 38	PG8 — GPIO / alternate functions
Pin 39	PG9 — GPIO / alternate functions
Pin 40	PG10 — GPIO / alternate functions
Pin 41	PG11 — GPIO / alternate functions
Pin 42	PG12 — GPIO / alternate functions
Pin 43	PG13 — GPIO / alternate functions
Pin 44	PG14 — GPIO / alternate functions
Pin 45	PG15 — GPIO / alternate functions
Pin 46	VSS — Ground
Pin 47	VDD — Power supply
Pin 48	PH0 — GPIO / OSC_IN
Pin 49	PH1 — GPIO / OSC_OUT
Pin 50	PH2 — GPIO / alternate functions
Pin 51	PH3 — GPIO / alternate functions
Pin 52	PH4 — GPIO / alternate functions
Pin 53	PH5 — GPIO / alternate functions
Pin 54	PH6 — GPIO / alternate functions
Pin 55	PH7 — GPIO / alternate functions
Pin 56	PH8 — GPIO / alternate functions
Pin 57	PH9 — GPIO / alternate functions
Pin 58	PH10 — GPIO / alternate functions
Pin 59	PH11 — GPIO / alternate functions
Pin 60	PH12 — GPIO / alternate functions
Pin 61	PH13 — GPIO / alternate functions
Pin 62	PH14 — GPIO / alternate functions
Pin 63	PH15 — GPIO / alternate functions
Pin 64	VSS — Ground
Pin 65	VDD — Power supply
Pin 66	PI0 — GPIO / alternate functions
Pin 67	PI1 — GPIO / alternate functions
Pin 68	PI2 — GPIO / alternate functions
Pin 69	PI3 — GPIO / alternate functions
Pin 70	PI4 — GPIO / alternate functions
Pin 71	PI5 — GPIO / alternate functions
Pin 72	PI6 — GPIO / alternate functions
Pin 73	PI7 — GPIO / alternate functions
Pin 74	PI8 — GPIO / alternate functions
Pin 75	PI9 — GPIO / alternate functions
Pin 76	PI10 — GPIO / alternate functions
Pin 77	PI11 — GPIO / alternate functions
Pin 78	PI12 — GPIO / alternate functions
Pin 79	PI13 — GPIO / alternate functions
Pin 80	PI14 — GPIO / alternate functions
Pin 81	PI15 — GPIO / alternate functions
Pin 82	VSS — Ground
Pin 83	VDD — Power supply
Pin 84	PA0 — GPIO / ADC / alternate functions
Pin 85	PA1 — GPIO / ADC / alternate functions
Pin 86	PA2 — GPIO / ADC / alternate functions
Pin 87	PA3 — GPIO / ADC / alternate functions
Pin 88	PA4 — GPIO / ADC / alternate functions
Pin 89	PA5 — GPIO / ADC / alternate functions
Pin 90	PA6 — GPIO / ADC / alternate functions
Pin 91	PA7 — GPIO / ADC / alternate functions
Pin 92	PA8 — GPIO / alternate functions
Pin 93	PA9 — GPIO / alternate functions
Pin 94	PA10 — GPIO / alternate functions
Pin 95	PA11 — GPIO / alternate functions
Pin 96	PA12 — GPIO / alternate functions
Pin 97	PA13 — GPIO / SWDIO
Pin 98	PA14 — GPIO / SWCLK
Pin 99	PA15 — GPIO / alternate functions
Pin 100	VSS — Ground
Pin 101	VDD — Power supply
Pin 102	PC0 — GPIO / ADC / alternate functions
Pin 103	PC1 — GPIO / ADC / alternate functions
Pin 104	PC2 — GPIO / ADC / alternate functions
Pin 105	PC3 — GPIO / ADC / alternate functions
Pin 106	PC4 — GPIO / ADC / alternate functions
Pin 107	PC5 — GPIO / ADC / alternate functions
Pin 108	PC6 — GPIO / alternate functions
Pin 109	PC7 — GPIO / alternate functions
Pin 110	PC8 — GPIO / alternate functions
Pin 111	PC9 — GPIO / alternate functions
Pin 112	PC10 — GPIO / alternate functions
Pin 113	PC11 — GPIO / alternate functions
Pin 114	PC12 — GPIO / alternate functions
Pin 115	PC13 — GPIO / RTC tamper
Pin 116	PC14 — GPIO / OSC32_IN
Pin 117	PC15 — GPIO / OSC32_OUT
Pin 118	VSS — Ground
Pin 119	VDD — Power supply
Pin 120	PB0 — GPIO / ADC / alternate functions
Pin 121	PB1 — GPIO / ADC / alternate functions
Pin 122	PB2 — GPIO / alternate functions
Pin 123	PB3 — GPIO / alternate functions
Pin 124	PB4 — GPIO / alternate functions
Pin 125	PB5 — GPIO / alternate functions
Pin 126	PB6 — GPIO / alternate functions
Pin 127	PB7 — GPIO / alternate functions
Pin 128	PB8 — GPIO / alternate functions
Pin 129	PB9 — GPIO / alternate functions
Pin 130	PB10 — GPIO / alternate functions
Pin 131	PB11 — GPIO / alternate functions
Pin 132	PB12 — GPIO / alternate functions
Pin 133	PB13 — GPIO / alternate functions
Pin 134	PB14 — GPIO / alternate functions
Pin 135	PB15 — GPIO / alternate functions
Pin 136	VSS — Ground
Pin 137	VDD — Power supply
Pin 138	PD0 — GPIO / alternate functions
Pin 139	PD1 — GPIO / alternate functions
Pin 140	PD2 — GPIO / alternate functions
Pin 141	PD3 — GPIO / alternate functions
Pin 142	PD4 — GPIO / alternate functions
Pin 143	PD5 — GPIO / alternate functions
Pin 144	PD6 — GPIO / alternate functions

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32H743ZIT6 is suitable for 6 applications: Industrial Automation, Motor Control, Medical Devices, Audio Processing, IoT Gateway, Robotics.

🏭

Industrial Automation

The STM32H743ZIT6 is ideal for industrial automation due to its 480 MHz Cortex-M7 core, advanced timers, and multiple communication interfaces. It can handle real-time control of PLCs, motor drives, and robotic systems. The high-speed ADCs enable precise current and voltage sensing, while the Ethernet MAC supports industrial networking protocols like EtherCAT and PROFINET. The device's robust operating temperature range (-40C to +85C) ensures reliability in harsh factory environments. With 2 MB of Flash, complex control algorithms and HMI graphics can be stored on-chip, reducing external memory requirements. The Chrom-ART Accelerator offloads graphics rendering, freeing the CPU for control tasks. In a typical PLC application, the MCU manages digital I/O, analog inputs, and communication stacks simultaneously, leveraging the DMA to minimize CPU overhead. The flexible memory controller allows expansion with external SDRAM for large data buffers. Power management features, including multiple low-power modes, help reduce energy consumption in always-on industrial systems. Overall, the STM32H743ZIT6 provides the performance and connectivity needed for next-generation industrial controllers.

Recommended

STM32H743ZIT6 · STMicroelectronics TJA1051 (CAN transceiver) LAN8742A (Ethernet PHY)

⚡

Motor Control

The STM32H743ZIT6 excels in motor control applications, including field-oriented control (FOC) of BLDC and PMSM motors. Its 480 MHz clock speed allows execution of complex control loops at high PWM frequencies, while the advanced timers generate complementary PWM signals with dead-time insertion. The 16-bit ADCs sample phase currents and DC bus voltage with high resolution, enabling precise torque and speed regulation. The device's DSP instructions and FPU accelerate mathematical operations like Clarke and Park transforms. In a typical motor drive, the MCU reads encoder or Hall sensor feedback, computes the control algorithm, and updates PWM duty cycles in real time. The integrated comparators and op-amps can be used for overcurrent protection. The STM32H743ZIT6 also supports various communication interfaces for connecting to higher-level controllers, such as CANopen or EtherCAT. With its rich peripheral set and high performance, this MCU reduces the need for external components, simplifying the BOM and reducing system cost. The device's thermal performance in the LQFP144 package is adequate for most motor control applications, but proper PCB layout and heatsinking are recommended for high-power drives.

Recommended

STGIPN3H60 (IPM power stage) ACS712 (Current sensor) AMT203 (Encoder)

💊

Medical Devices

The STM32H743ZIT6 is suitable for medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high processing power enables real-time signal processing for ECG, EEG, and other biosignals. The multiple ADCs and DACs allow interfacing with analog front-ends, while the USB and Ethernet interfaces facilitate data transfer to host systems. The device's low-power modes are beneficial for portable medical devices, extending battery life. The large Flash memory can store patient data and firmware updates. In a patient monitor, the MCU acquires vital signs from sensors, processes the data, and displays waveforms on an LCD via the Chrom-ART Accelerator. The hardware cryptographic accelerator (in the STM32H753 variant) can secure patient data, but the STM32H743ZIT6 still offers a true random number generator for basic security. The device's reliability and long-term availability make it a trusted choice for medical applications. Designers must ensure compliance with medical standards like IEC 60601, which may require additional isolation and safety measures.

Recommended

ADS1298 (ECG front-end) MAX30102 (Pulse oximeter sensor) FTDI FT2232H (USB bridge)

🎧

Audio Processing

The STM32H743ZIT6 is well-suited for high-end audio processing, including audio interfaces, effects processors, and smart speakers. Its 480 MHz Cortex-M7 core with FPU and DSP instructions can handle real-time audio algorithms such as filtering, equalization, and dynamic range compression. The device includes multiple I2S interfaces for connecting to audio codecs and DACs, supporting high-resolution audio up to 32-bit/192 kHz. The SAI (Serial Audio Interface) provides flexible audio data routing. The large SRAM (1 MB) allows buffering of audio samples, and the DMA can transfer data without CPU intervention. In a typical audio application, the MCU reads audio data from an I2S input, processes it, and outputs to an I2S DAC. The Chrom-ART Accelerator can drive a graphical user interface for user control. The device's low-latency interrupt handling ensures glitch-free audio. Power consumption is a consideration for portable audio devices, but the STM32H743ZIT6 offers various low-power modes to optimize battery life. Overall, this MCU provides the performance and audio-specific peripherals needed for professional audio equipment.

Recommended

CS42L51 (Audio codec) PCM5242 (DAC) TAS5754M (Class-D amplifier)

🌐

IoT Gateway

The STM32H743ZIT6 is an excellent choice for IoT gateways that aggregate data from multiple sensors and communicate with cloud services. Its Ethernet MAC and multiple UART/SPI/I2C interfaces allow connection to various wireless modules (Wi-Fi, Zigbee, LoRa) and sensors. The high processing power enables protocol conversion and edge computing, such as data filtering and anomaly detection. The device's security features, including a true random number generator and hardware crypto (in the STM32H753 variant), help secure communication. In a typical IoT gateway, the MCU collects data from sensors via UART or SPI, processes it, and forwards it to the cloud via Ethernet or Wi-Fi. The large Flash memory can store firmware updates and local data logging. The device supports multiple low-power modes, but gateways are usually mains-powered, so power consumption is less critical. The STM32H743ZIT6's rich connectivity and processing power make it a versatile platform for smart home and industrial IoT applications. Designers can leverage ST's ecosystem, including STM32CubeMX and middleware, to accelerate development.

Recommended

ESP32 (Wi-Fi module) SX1276 (LoRa transceiver) LAN8742A (Ethernet PHY)

🤖

Robotics

The STM32H743ZIT6 is ideal for robotics applications, including autonomous mobile robots, robotic arms, and drones. Its high clock speed and FPU enable complex kinematics and control algorithms, such as inverse kinematics and PID control. The advanced timers generate precise PWM signals for servo and motor control, while the multiple ADCs read position and current sensors. The device's communication interfaces allow interfacing with lidar, cameras, and other sensors. In a typical robot, the MCU acts as the central controller, processing sensor data, planning trajectories, and commanding actuators. The large SRAM supports real-time operating systems (RTOS) and data buffering. The Chrom-ART Accelerator can drive a display for user interaction. The device's robustness and wide temperature range make it suitable for field robotics. Power management is crucial for battery-powered robots, and the STM32H743ZIT6 offers various low-power modes. With its high performance and peripheral integration, this MCU reduces the need for multiple processors, simplifying the robot's electronics.

Recommended

TB6612FNG (Motor driver) MPU6050 (IMU) VL53L0X (Time-of-flight sensor)

Recommended Products Summary

STM32H743ZIT6 STMicroelectronics Used in: Industrial Automation TJA1051 CAN transceiver Used in: Industrial Automation LAN8742A Ethernet PHY Used in: Industrial Automation, IoT Gateway STGIPN3H60 IPM power stage Used in: Motor Control ACS712 Current sensor Used in: Motor Control AMT203 Encoder Used in: Motor Control ADS1298 ECG front-end Used in: Medical Devices MAX30102 Pulse oximeter sensor Used in: Medical Devices FTDI FT2232H USB bridge Used in: Medical Devices CS42L51 Audio codec Used in: Audio Processing PCM5242 DAC Used in: Audio Processing TAS5754M Class-D amplifier Used in: Audio Processing ESP32 Wi-Fi module Used in: IoT Gateway SX1276 LoRa transceiver Used in: IoT Gateway TB6612FNG Motor driver Used in: Robotics MPU6050 IMU Used in: Robotics VL53L0X Time-of-flight sensor Used in: Robotics

What is the maximum clock speed of STM32H743ZIT6?

The STM32H743ZIT6 operates at a maximum clock speed of 480 MHz. According to the STMicroelectronics datasheet, this is achieved with the ARM Cortex-M7 core and a 1.62V to 3.6V supply.

How much Flash memory does STM32H743ZIT6 have?

The STM32H743ZIT6 has 2 MB of Flash memory. This is sufficient for complex applications requiring large code storage, such as industrial control and audio processing.

What is the difference between STM32H743ZIT6 and STM32H743VIT6?

The STM32H743ZIT6 is in a 144-pin LQFP package, while the STM32H743VIT6 is in a 100-pin LQFP package. Both share the same core, Flash, and RAM, but the ZIT6 offers more GPIO pins and peripherals due to the larger package.

Can STM32H743ZIT6 be used for motor control?

Yes, the STM32H743ZIT6 is well-suited for motor control due to its advanced timers, high-resolution ADCs, and 480 MHz processing speed. It can handle complex control algorithms like FOC (Field-Oriented Control) with ease.

What is the operating temperature range of STM32H743ZIT6?

The STM32H743ZIT6 operates over a temperature range of -40C to +85C. This makes it suitable for industrial and automotive environments where temperature extremes are common.

Does STM32H743ZIT6 support Ethernet?

Yes, the STM32H743ZIT6 includes an Ethernet MAC interface, supporting 10/100 Mbps speeds. This enables networking capabilities for IoT and industrial applications.

What is the price of STM32H743ZIT6?

As of 2026-08-05, the price of STM32H743ZIT6 is approximately $18.50 for single-unit quantities, decreasing to $11.85 at 1000 units. Prices vary by distributor and availability.

Where can I buy STM32H743ZIT6 online?

STM32H743ZIT6 is available from major distributors such as DigiKey, Mouser, and Arrow. You can also purchase directly from STMicroelectronics' website or authorized distributors.

What is the lead time for STM32H743ZIT6?

The lead time for STM32H743ZIT6 is typically 8-12 weeks from distributors, depending on stock levels. For urgent orders, check availability on DigiKey or Mouser for current stock.

Is STM32H743ZIT6 in stock?

Stock availability for STM32H743ZIT6 varies by distributor. As of 2026-08-05, DigiKey and Mouser typically have stock, but it is recommended to check their websites for real-time inventory.

What is the best drop-in replacement for STM32H743ZIT6?

The best drop-in replacement for STM32H743ZIT6 is the STM32H743ZIT6TR, which is the tape-and-reel packaging variant with identical specifications. Other drop-in alternatives include STM32H753ZIT6 (with crypto/hash) and STM32H743ZIT6U (with different package, but not drop-in).

Can STM32H743ZIT6 be replaced by STM32H753ZIT6?

Yes, the STM32H753ZIT6 is a drop-in replacement for STM32H743ZIT6 in the same LQFP144 package. It adds hardware cryptographic acceleration and a true random number generator, making it suitable for security-focused applications.

When should I choose STM32H743ZIT6 over STM32H753ZIT6?

Choose STM32H743ZIT6 when you do not need hardware cryptography and want to minimize cost. Choose STM32H753ZIT6 if your application requires AES, DES, or SHA hardware acceleration for secure communication.

Where can I download the STM32H743ZIT6 datasheet PDF?

The STM32H743ZIT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32h743zi.pdf. It is also available on distributor sites like DigiKey and Mouser.

Where can I find the STM32H743ZIT6 pinout?

The STM32H743ZIT6 pinout is detailed in the datasheet and the STM32H743ZI reference manual (RM0433). The pinout diagram is available in the datasheet's pin description section, and you can also find it in ST's CubeMX tool.

What is the power consumption of STM32H743ZIT6 in standby mode?

In standby mode, the STM32H743ZIT6 consumes approximately 2.5 uA with the RTC enabled. This low power consumption makes it suitable for battery-powered applications.

Does STM32H743ZIT6 have a built-in DAC?

Yes, the STM32H743ZIT6 includes two 12-bit DAC channels. These can be used for analog output generation in audio or control applications.

What development tools are compatible with STM32H743ZIT6?

STM32H743ZIT6 is supported by STM32CubeIDE, Keil MDK, IAR EWARM, and GCC-based toolchains. ST also provides the STM32CubeH7 firmware package with HAL and LL drivers.

Is STM32H743ZIT6 RoHS compliant?

Yes, the STM32H743ZIT6 is RoHS compliant. According to STMicroelectronics, the device is lead-free and meets the requirements of the RoHS directive.

What is the difference between STM32H743ZIT6 and STM32H743ZIT6TR?

The STM32H743ZIT6 and STM32H743ZIT6TR are electrically identical. The only difference is packaging: the ZIT6 is in a tray, while the ZIT6TR is in tape-and-reel packaging for automated assembly.

Engineering reference data for STM32H743ZIT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32H743ZIT6 when you need a high-performance MCU with 480 MHz processing, 2 MB Flash, and 1 MB RAM in a 144-pin LQFP package, and you do not require hardware cryptography. It is ideal for industrial control, motor control, and audio processing. If you need hardware crypto for secure communication, select the STM32H753ZIT6, which is pin-compatible and offers AES/DES/SHA acceleration at a slightly higher cost. For high-volume production, consider the STM32H743ZIT6TR (tape-and-reel) to simplify assembly. Avoid the STM32H743ZIT6U unless you are specifically designing for its unique pinout, as it is not a drop-in replacement. All alternatives share the same LQFP144 package, enabling PCB layout reuse.

Comparison with Alternatives

Parameter	This Product	STM32H743ZIT6TR	STM32H753ZIT6	STM32H743ZIT6U
Package	LQFP144	LQFP144 - same	LQFP144 - same	LQFP144 - same
Max Clock Speed	480 MHz	480 MHz	480 MHz	480 MHz
Flash Memory	2 MB	2 MB	2 MB	2 MB
SRAM	1 MB	1 MB	1 MB	1 MB
Hardware Crypto	No	No	Yes	No
Pinout Compatibility	Standard	Standard	Standard	Different (U suffix)
Packaging	Tray	Tape & Reel	Tray	Tray
Price (1pc)	$18.50	$18.50	$19.20	$18.50

Key Differentiators

480 MHz Cortex-M7 with double-precision FPU (vs STM32H743ZIT6TR)
No hardware crypto, lower cost (vs STM32H753ZIT6)
Standard pinout (vs STM32H743ZIT6U)

Design Notes

The STM32H743ZIT6 requires a stable 3.3V supply. Use a low-dropout regulator (LDO) with adequate current capability (e.g., 500mA) and place 100nF and 4.7uF decoupling capacitors close to each VDD pin. The VDDA pin should be filtered with a ferrite bead and a 1uF capacitor to reduce analog noise. Ensure the VBAT pin is connected to a backup battery or tied to VDD through a diode for RTC operation.

For the LQFP144 package, use a 4-layer PCB with a solid ground plane. Route high-speed signals (Ethernet, USB) with controlled impedance (e.g., 90 ohms for USB). Place the crystal oscillator (25 MHz) close to the PH0/PH1 pins with load capacitors as specified in the datasheet. Keep the SWD interface traces short and add series resistors for ESD protection.

The STM32H743ZIT6 can dissipate significant power at 480 MHz. The LQFP144 package has a thermal resistance of approximately 40 C/W (theta_JA). For continuous operation at high load, ensure adequate airflow or a heatsink. In typical applications, the junction temperature should be kept below 125C. Use thermal vias under the exposed pad (if available) to improve heat transfer to the ground plane.