STMicroelectronics

STM32H7A3RGT6 - 280MHz Cortex-M7 MCU with 1.4MB RAM | STMicroelectronics

Name: STM32H7A3RGT6
Brand: STMicroelectronics
Price: 12.50 USD
Availability: InStock

MPN: STM32H7A3RGT6 ✓ Active

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

1.62 V to 3.6 V Vdss LQFP64 Package 280 MHz Speed 2 MB Memory

$12.5 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$12.5	$12.50
10	$11.25	$112.50
100	$10	$1,000.00
500	$9	$4,500.00
1,000	$8.1	$8,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32H7A3RGT6 — 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:

STM32H7A3RIT6

✅ Drop-In

📦 LQFP64

Same package and pinout, more flash (2 MB vs 2 MB), same SRAM

📋 Reference alternative (not in catalog)

STM32H7A3RGT6-Q

✅ Drop-In

📦 LQFP64

Automotive grade (AEC-Q100), same package and pinout

📋 Reference alternative (not in catalog)

STM32H7A3RGT6

✅ Drop-In

STMicroelectronics

📦 LQFP64

ARM Cortex-M7 · 280 MHz · 2 MB · 1.4 MB · LQFP64 · 1.62 V to 3.6 V · -40C to +85C · 53

✓ 99,999 In Stock

$8.1 / Unit

View Datasheet →

STM32H743RGT6

✅ Drop-In

📦 LQFP64

Higher clock (480 MHz), more SRAM (1 MB), same package and pinout

📋 Reference alternative (not in catalog)

STM32H750RBT6

✅ Drop-In

📦 LQFP64

Lower flash (128 KB), same package and pinout

📋 Reference alternative (not in catalog)

STM32H7A3RGT6

✅ Drop-In

STMicroelectronics

📦 LQFP64

ARM Cortex-M7 · 280 MHz · 2 MB · 1.4 MB · LQFP64 · 1.62 V to 3.6 V · -40C to +85C · 53

✓ 99,999 In Stock

$8.1 / Unit

View Datasheet →

STM32H7A3RGT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M7
Maximum Clock Frequency	280 MHz
Flash Memory	2 MB
SRAM	1.4 MB
Package	LQFP64
Supply Voltage	1.62 V to 3.6 V
Operating Temperature	-40C to +85C
GPIO Pins	53
ADC	3x 16-bit, 2 Msps
DAC	2x 12-bit
Timers	22 (16-bit and 32-bit)
Communication Interfaces	Ethernet, USB 2.0 OTG, 4x UART, 4x SPI, 4x I2C, 2x CAN, SAI, SDMMC
DMA	2x DMA controllers with 16 streams each
Cryptographic Acceleration	AES, DES, 3DES, SHA-1, SHA-256, TRNG
RoHS Status	Compliant

STM32H7A3RGT6 Pin Configuration

Pin 1	VBAT — Backup battery supply
Pin 2	PC13 — GPIO / RTC output
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO
Pin 6	PF1 — GPIO
Pin 7	NRST — Reset (active low)
Pin 8	VDD — Digital power supply
Pin 9	VSS — Ground
Pin 10	PD0 — GPIO / Ethernet
Pin 11	PD1 — GPIO / Ethernet
Pin 12	PD2 — GPIO
Pin 13	PD3 — GPIO
Pin 14	PD4 — GPIO
Pin 15	PD5 — GPIO
Pin 16	PD6 — GPIO
Pin 17	PD7 — GPIO
Pin 18	VDD — Digital power supply
Pin 19	VSS — Ground
Pin 20	PD8 — GPIO / UART
Pin 21	PD9 — GPIO / UART
Pin 22	PD10 — GPIO / UART
Pin 23	PD11 — GPIO / UART
Pin 24	PD12 — GPIO / UART
Pin 25	PD13 — GPIO / UART
Pin 26	PD14 — GPIO / UART
Pin 27	PD15 — GPIO / UART
Pin 28	VDD — Digital power supply
Pin 29	VSS — Ground
Pin 30	PE0 — GPIO
Pin 31	PE1 — GPIO
Pin 32	PE2 — GPIO
Pin 33	PE3 — GPIO
Pin 34	PE4 — GPIO
Pin 35	PE5 — GPIO
Pin 36	PE6 — GPIO
Pin 37	PE7 — GPIO
Pin 38	PE8 — GPIO
Pin 39	PE9 — GPIO
Pin 40	PE10 — GPIO
Pin 41	PE11 — GPIO
Pin 42	PE12 — GPIO
Pin 43	PE13 — GPIO
Pin 44	PE14 — GPIO
Pin 45	PE15 — GPIO
Pin 46	VDD — Digital power supply
Pin 47	VSS — Ground
Pin 48	PB0 — GPIO / ADC
Pin 49	PB1 — GPIO / ADC
Pin 50	PB2 — GPIO
Pin 51	PB3 — GPIO / SPI
Pin 52	PB4 — GPIO / SPI
Pin 53	PB5 — GPIO / I2C
Pin 54	PB6 — GPIO / I2C
Pin 55	PB7 — GPIO / I2C
Pin 56	BOOT0 — Boot mode selection
Pin 57	PB8 — GPIO / I2C
Pin 58	PB9 — GPIO / I2C
Pin 59	VDD — Digital power supply
Pin 60	VSS — Ground
Pin 61	PA0 — GPIO / ADC
Pin 62	PA1 — GPIO / ADC
Pin 63	PA2 — GPIO / UART
Pin 64	PA3 — GPIO / UART

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

STM32H7A3RGT6 is suitable for 6 applications: Industrial Automation, IoT Gateway, Motor Control, Smart Home Hub, Medical Monitoring Device, Consumer Electronics.

🏭

Industrial Automation

The STM32H7A3RGT6 is ideal for industrial automation due to its high processing power, multiple communication interfaces (Ethernet, CAN, UART), and advanced timers for precise motor control. Its 280 MHz Cortex-M7 core can handle complex control algorithms, while the large memory supports data logging and HMI applications. The device's wide supply voltage range and industrial temperature rating make it suitable for harsh environments.

Recommended

TJA1051 (CAN transceiver for industrial networking) ISO7741 (Digital isolator for safety isolation)

🌐

IoT Gateway

With built-in Ethernet MAC, USB OTG, and multiple UART/SPI/I2C interfaces, the STM32H7A3RGT6 is well-suited for IoT gateways that aggregate data from various sensors and communicate with cloud services. Its cryptographic acceleration and TRNG enhance security for secure communication protocols. The low-power modes help reduce energy consumption in always-on gateway applications.

Recommended

LAN8742A (Ethernet PHY for physical layer connectivity) ESP32-WROOM-32 (Wi-Fi module for wireless connectivity)

⚡

Motor Control

The STM32H7A3RGT6 excels in motor control applications, offering high-speed ADCs (2 Msps) for current sensing, advanced timers for PWM generation, and a powerful core for executing field-oriented control (FOC) algorithms. The device's multiple communication interfaces allow for easy integration with encoders and drives. Its large memory supports complex control loops and data logging.

Recommended

IR2104 (Gate driver for MOSFET/IGBT bridges) ACS712 (Current sensor for motor phase current measurement)

🧩

Smart Home Hub

The STM32H7A3RGT6 can serve as the central processor in a smart home hub, managing multiple communication protocols (Zigbee, Z-Wave, Wi-Fi) via external modules. Its high performance enables local processing of voice commands and automation rules, reducing cloud dependency. The device's security features protect user data and communication.

Recommended

CC2530 (Zigbee radio module for wireless sensor networks) WM8960 (Audio codec for voice interaction)

💊

Medical Monitoring Device

In medical monitoring devices, the STM32H7A3RGT6 provides the processing power for real-time signal processing (ECG, EEG) and data analysis. Its high-resolution ADCs capture physiological signals accurately, while the large memory stores patient data. The device's low-power modes extend battery life in portable monitors, and its security features ensure patient data confidentiality.

Recommended

ADS1298 (Biopotential ADC for ECG/EEG acquisition) BQ25120 (Battery charger for portable devices)

📱

Consumer Electronics

The STM32H7A3RGT6 is used in high-end consumer electronics such as smart speakers, home appliances, and wearable devices. Its high clock speed and graphics accelerator (Chrom-ART) enable rich user interfaces, while the large memory supports multimedia content. The device's connectivity options allow for seamless integration with smartphones and cloud services.

Recommended

SSD1963 (LCD controller for graphical displays) WM8731 (Audio codec for audio playback)

Recommended Products Summary

TJA1051 CAN transceiver for industrial networking Used in: Industrial Automation ISO7741 Digital isolator for safety isolation Used in: Industrial Automation LAN8742A Ethernet PHY for physical layer connectivity Used in: IoT Gateway ESP32-WROOM-32 Wi-Fi module for wireless connectivity Used in: IoT Gateway IR2104 Gate driver for MOSFET/IGBT bridges Used in: Motor Control ACS712 Current sensor for motor phase current measurement Used in: Motor Control CC2530 Zigbee radio module for wireless sensor networks Used in: Smart Home Hub WM8960 Audio codec for voice interaction Used in: Smart Home Hub ADS1298 Biopotential ADC for ECG/EEG acquisition Used in: Medical Monitoring Device BQ25120 Battery charger for portable devices Used in: Medical Monitoring Device SSD1963 LCD controller for graphical displays Used in: Consumer Electronics WM8731 Audio codec for audio playback Used in: Consumer Electronics

What is the maximum clock frequency of STM32H7A3RGT6?

The STM32H7A3RGT6 operates at a maximum clock frequency of 280 MHz. According to the STMicroelectronics datasheet, the ARM Cortex-M7 core can run at up to 280 MHz, providing high computational throughput for demanding applications.

How much flash memory and SRAM does STM32H7A3RGT6 have?

The STM32H7A3RGT6 has 2 MB of flash memory and 1.4 MB of SRAM. This large memory capacity allows for complex applications and data buffering without external memory in many cases.

What is the package type of STM32H7A3RGT6?

The STM32H7A3RGT6 is available in a 64-pin LQFP package (LQFP64). This surface-mount package is suitable for compact PCB designs and is widely used in industrial and consumer electronics.

What is the supply voltage range for STM32H7A3RGT6?

The STM32H7A3RGT6 operates with a supply voltage range of 1.62V to 3.6V. This wide range allows flexible power supply design, including battery-powered applications.

Does STM32H7A3RGT6 support Ethernet connectivity?

Yes, the STM32H7A3RGT6 includes an Ethernet MAC interface, supporting 10/100 Mbps Ethernet. This makes it suitable for IoT and industrial networking applications.

What are the key differences between STM32H7A3RGT6 and STM32H743RGT6?

The STM32H7A3RGT6 has a lower maximum clock frequency (280 MHz vs 480 MHz) and less SRAM (1.4 MB vs 1 MB) compared to the STM32H743RGT6. However, the H7A3 offers a more cost-effective solution with similar peripheral set, making it suitable for applications where the higher performance of the H743 is not required.

Can STM32H7A3RGT6 be used for motor control applications?

Yes, the STM32H7A3RGT6 is well-suited for motor control due to its high-speed ADC, advanced timers with PWM generation, and multiple communication interfaces. The 280 MHz Cortex-M7 core can handle complex control algorithms like field-oriented control (FOC).

What is the best drop-in replacement for STM32H7A3RGT6?

The STM32H7A3RGT6 has several drop-in replacements within the STM32H7 family, including STM32H7A3RGT6 (same part), STM32H7A3RIT6 (same package, more flash), and STM32H7A3RGT6-Q (automotive grade). Cross-brand alternatives are limited, but the NXP i.MX RT1052 is a functional alternative with similar performance, though it requires PCB changes due to different package.

Where can I download the STM32H7A3RGT6 datasheet PDF?

The STM32H7A3RGT6 datasheet is available for download from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32h7a3rg.pdf. The datasheet contains full specifications, pinout, and application notes.

What is the price of STM32H7A3RGT6?

As of 2026-08-09, the price of STM32H7A3RGT6 is approximately $12.50 for single-unit quantities, with volume pricing dropping to around $8.10 at 1000 units. Prices may vary by distributor and availability.

Is STM32H7A3RGT6 in stock at major distributors?

As of 2026-08-09, STM32H7A3RGT6 is typically in stock at major distributors like DigiKey and Mouser. However, stock levels can fluctuate, so it is recommended to check current availability on their websites.

What is the lead time for STM32H7A3RGT6?

The typical lead time for STM32H7A3RGT6 is 8-12 weeks for large orders, but smaller quantities may be available immediately from distributors. Lead times can vary based on market demand and supply chain conditions.

When should I choose STM32H7A3RGT6 over STM32H743RGT6?

Choose STM32H7A3RGT6 when you need a cost-effective solution with sufficient performance (280 MHz) and large memory (2 MB flash, 1.4 MB SRAM) but do not require the maximum 480 MHz clock speed of the STM32H743RGT6. The H7A3 is ideal for applications where power consumption and cost are more critical than raw processing speed.

Is STM32H7A3RGT6 suitable for IoT applications?

Yes, the STM32H7A3RGT6 is suitable for IoT applications due to its Ethernet MAC, USB OTG, and multiple communication interfaces. Its low power modes and security features (cryptographic acceleration, TRNG) make it a strong candidate for connected devices.

What are the key specifications of STM32H7A3RGT6 that engineers should know?

Engineers should know that the STM32H7A3RGT6 features a 280 MHz ARM Cortex-M7 core, 2 MB flash, 1.4 MB SRAM, 3x 16-bit ADCs, 2x 12-bit DACs, Ethernet MAC, USB 2.0 OTG, and a wide supply voltage range of 1.62V to 3.6V. It is packaged in LQFP64 and operates from -40C to +85C.

Hey Google, what can replace STM32H7A3RGT6?

The STM32H7A3RGT6 can be replaced by other STM32H7 family members such as STM32H7A3RIT6 (same package, more flash) or STM32H7A3RGT6-Q (automotive grade). For cross-brand alternatives, the NXP i.MX RT1052 offers similar performance but requires a different PCB layout due to its BGA package.

Is STM32H7A3RGT6 the same as STM32H7A3RIT6?

No, the STM32H7A3RGT6 and STM32H7A3RIT6 are not the same. The STM32H7A3RIT6 has 2 MB flash and 1.4 MB SRAM, while the STM32H7A3RGT6 has 2 MB flash and 1.4 MB SRAM as well, but the 'I' suffix indicates a different package variant (LQFP64 vs LQFP64). They are pin-compatible and can be used as drop-in replacements.

What is the best NXP equivalent for STM32H7A3RGT6?

The NXP i.MX RT1052 is a functional equivalent to the STM32H7A3RGT6, offering a 600 MHz Cortex-M7 core, 512 KB SRAM, and similar connectivity options. However, it is not pin-compatible due to its BGA package, so it is not a drop-in replacement.

What is the operating temperature range of STM32H7A3RGT6?

The STM32H7A3RGT6 operates over a temperature range of -40C to +85C. This makes it suitable for industrial and automotive environments where temperature extremes are common.

Does STM32H7A3RGT6 have hardware cryptographic acceleration?

Yes, the STM32H7A3RGT6 includes hardware cryptographic acceleration for AES, DES, 3DES, SHA-1, and SHA-256 algorithms, along with a true random number generator (TRNG). This enhances security for applications requiring encryption.

Engineering reference data for STM32H7A3RGT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32H7A3RGT6 when you need a high-performance MCU with 280 MHz clock speed, 2 MB flash, and 1.4 MB SRAM in a compact LQFP64 package. It is ideal for applications requiring Ethernet connectivity, advanced motor control, or rich user interfaces. If you require automotive qualification, select the STM32H7A3RGT6-Q. If you need even higher performance (480 MHz) and can tolerate higher cost, consider the STM32H743RGT6. For cost-sensitive applications with lower flash requirements, the STM32H750RBT6 offers a cheaper alternative, but with only 128 KB flash. All alternatives share the same LQFP64 package and are pin-compatible, allowing easy PCB reuse.

Comparison with Alternatives

Parameter	This Product	STM32H7A3RIT6	STM32H7A3RGT6-Q	STM32H743RGT6	STM32H750RBT6
Package	LQFP64	LQFP64	LQFP64	LQFP64	LQFP64
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Core Clock	280 MHz	280 MHz	280 MHz	480 MHz	480 MHz
Flash Memory	2 MB	2 MB	2 MB	2 MB	128 KB
SRAM	1.4 MB	1.4 MB	1.4 MB	1 MB	1 MB
Automotive Grade	No	No	Yes (AEC-Q100)	No	No
Ethernet MAC	Yes	Yes	Yes	Yes	Yes
Price (1pc)	$12.50	$13.00	$14.00	$15.00	$10.00

Key Differentiators

Higher SRAM capacity (1.4 MB) compared to STM32H743RGT6 (1 MB) (vs STM32H743RGT6)
Lower cost than STM32H743RGT6 while maintaining similar peripheral set (vs STM32H743RGT6)
Automotive grade variant available (STM32H7A3RGT6-Q) (vs STM32H7A3RGT6)

Design Notes

The STM32H7A3RGT6 requires a stable power supply. Place a 100 nF ceramic capacitor close to each VDD pin and a 4.7 uF bulk capacitor near the power input. For VDDA (analog supply), use a ferrite bead and a 1 uF capacitor to filter noise. Ensure the supply voltage stays within 1.62V to 3.6V.

For high-speed interfaces like Ethernet and USB, follow the layout guidelines in the datasheet. Keep traces short and matched for differential pairs. Use a solid ground plane and avoid routing high-speed signals over split planes. Place decoupling capacitors as close to the pins as possible.

Do not leave unused pins floating; configure them as analog inputs or outputs to avoid excessive current draw. Ensure the BOOT0 pin is properly pulled to the correct level for the desired boot mode. For low-power applications, use the device's low-power modes and disable unused peripherals to reduce current consumption.