STMicroelectronics

STM32H7B3ZIT6 - 280MHz Cortex-M7 MCU, 2MB Flash | STMicroelectronics

Name: STM32H7B3ZIT6
Brand: STMicroelectronics
Price: 8.1 USD
Availability: InStock

MPN: STM32H7B3ZIT6 ✓ Active

In Stock Ships in 1-3 business days

1.62 V to 3.6 V Vdss LQFP144 (20x20 mm) Package 280 MHz Speed 2 MB Memory

From $8.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-13

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 STM32H7B3ZIT6 — 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:

STM32H7A3ZIT6

✅ Drop-In

📦 LQFP144

Same package and pinout, lacks Chrom-ART Accelerator, same memory

📋 Reference alternative (not in catalog)

STM32H7B0ZIT6

✅ Drop-In

📦 LQFP144

Same package and pinout, lower SRAM (1.4 MB vs 1.4 MB), no Chrom-ART

📋 Reference alternative (not in catalog)

STM32H743ZIT6

✅ Drop-In

STMicroelectronics

📦 LQFP144

ARM Cortex-M7 · 480 MHz · 2 MB · 1 MB · 1.62 V to 3.6 V · LQFP144 (20x20 mm) · 114 · 16-bit

✓ In Stock

$9.2273 / Unit

View Datasheet →

STM32H753ZIT6

✅ Drop-In

STMicroelectronics

📦 LQFP144

Arm Cortex-M7 · 480 MHz · 2 MB (dual-bank) · 1 MB · LQFP144 (20x20 mm) · 1.62 V to 3.6 V · -40C to +85C · 114

✓ In Stock

$11.75 / Unit

View Datasheet →

STM32H750ZBT6

✅ Drop-In

📦 LQFP144

Same package and pinout, lower flash (128 KB), higher clock (480 MHz)

📋 Reference alternative (not in catalog)

STM32H7B3ZIT6 Maximum Ratings & Electrical Characteristics

Core	Arm Cortex-M7
Max Clock Speed	280 MHz
Flash Memory	2 MB
SRAM	1.4 MB
Package	LQFP144 (20x20 mm)
Supply Voltage	1.62 V to 3.6 V
Operating Temperature	-40C to +85C
GPIO Pins	114
ADC	3x 16-bit, 3.6 MSPS
DAC	2x 12-bit
Communication Interfaces	Ethernet, USB OTG HS, 4x USART, 4x SPI, 4x I2C, 2x FDCAN
Timers	20x 16-bit, 2x 32-bit
DMA	2x DMA controllers with 16 streams each
Cryptographic Acceleration	AES, DES, 3DES, SHA-1, SHA-256
CoreMark	856
RoHS Status	Compliant

STM32H7B3ZIT6 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 — Backup battery 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	PF6 — GPIO / alternate functions
Pin 17	PF7 — GPIO / alternate functions
Pin 18	PF8 — GPIO / alternate functions
Pin 19	PF9 — GPIO / alternate functions
Pin 20	PF10 — GPIO / alternate functions
Pin 21	VSS — Ground
Pin 22	VDD — Digital power supply
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	PG0 — GPIO / alternate functions
Pin 29	PG1 — GPIO / alternate functions
Pin 30	PG2 — GPIO / alternate functions
Pin 31	PG3 — GPIO / alternate functions
Pin 32	PG4 — GPIO / alternate functions
Pin 33	PG5 — GPIO / alternate functions
Pin 34	PG6 — GPIO / alternate functions
Pin 35	PG7 — GPIO / alternate functions
Pin 36	PG8 — GPIO / alternate functions
Pin 37	PG9 — GPIO / alternate functions
Pin 38	PG10 — GPIO / alternate functions
Pin 39	PG11 — GPIO / alternate functions
Pin 40	PG12 — GPIO / alternate functions
Pin 41	PG13 — GPIO / alternate functions
Pin 42	PG14 — GPIO / alternate functions
Pin 43	PG15 — GPIO / alternate functions
Pin 44	VSS — Ground
Pin 45	VDD — Digital power supply
Pin 46	PH0 — GPIO / OSC_IN
Pin 47	PH1 — GPIO / OSC_OUT
Pin 48	NRST — Reset (active low)
Pin 49	PC0 — GPIO / ADC input
Pin 50	PC1 — GPIO / ADC input
Pin 51	PC2 — GPIO / ADC input
Pin 52	PC3 — GPIO / ADC input
Pin 53	VSSA — Analog ground
Pin 54	VDDA — Analog power supply
Pin 55	PC4 — GPIO / ADC input
Pin 56	PC5 — GPIO / ADC input
Pin 57	PB0 — GPIO / ADC input
Pin 58	PB1 — GPIO / ADC input
Pin 59	PB2 — GPIO / alternate functions
Pin 60	PB3 — GPIO / alternate functions
Pin 61	PB4 — GPIO / alternate functions
Pin 62	PB5 — GPIO / alternate functions
Pin 63	PB6 — GPIO / alternate functions
Pin 64	PB7 — GPIO / alternate functions
Pin 65	BOOT0 — Boot mode selection
Pin 66	PB8 — GPIO / alternate functions
Pin 67	PB9 — GPIO / alternate functions
Pin 68	PE7 — GPIO / alternate functions
Pin 69	PE8 — GPIO / alternate functions
Pin 70	PE9 — GPIO / alternate functions
Pin 71	PE10 — GPIO / alternate functions
Pin 72	PE11 — GPIO / alternate functions
Pin 73	PE12 — GPIO / alternate functions
Pin 74	PE13 — GPIO / alternate functions
Pin 75	PE14 — GPIO / alternate functions
Pin 76	PE15 — GPIO / alternate functions
Pin 77	PB10 — GPIO / alternate functions
Pin 78	PB11 — GPIO / alternate functions
Pin 79	VSS — Ground
Pin 80	VDD — Digital power supply
Pin 81	PB12 — GPIO / alternate functions
Pin 82	PB13 — GPIO / alternate functions
Pin 83	PB14 — GPIO / alternate functions
Pin 84	PB15 — GPIO / alternate functions
Pin 85	PD8 — GPIO / alternate functions
Pin 86	PD9 — GPIO / alternate functions
Pin 87	PD10 — GPIO / alternate functions
Pin 88	PD11 — GPIO / alternate functions
Pin 89	PD12 — GPIO / alternate functions
Pin 90	PD13 — GPIO / alternate functions
Pin 91	PD14 — GPIO / alternate functions
Pin 92	PD15 — GPIO / alternate functions
Pin 93	PA0 — GPIO / ADC input / WKUP
Pin 94	PA1 — GPIO / ADC input
Pin 95	PA2 — GPIO / USART2_TX
Pin 96	PA3 — GPIO / USART2_RX
Pin 97	VSS — Ground
Pin 98	VDD — Digital power supply
Pin 99	PA4 — GPIO / DAC_OUT1
Pin 100	PA5 — GPIO / DAC_OUT2
Pin 101	PA6 — GPIO / ADC input
Pin 102	PA7 — GPIO / ADC input
Pin 103	PC4 — GPIO / ADC input
Pin 104	PC5 — GPIO / ADC input
Pin 105	PB0 — GPIO / ADC input
Pin 106	PB1 — GPIO / ADC input
Pin 107	PB2 — GPIO / alternate functions
Pin 108	PB3 — GPIO / alternate functions
Pin 109	PB4 — GPIO / alternate functions
Pin 110	PB5 — GPIO / alternate functions
Pin 111	PB6 — GPIO / alternate functions
Pin 112	PB7 — GPIO / alternate functions
Pin 113	BOOT0 — Boot mode selection
Pin 114	PB8 — GPIO / alternate functions
Pin 115	PB9 — GPIO / alternate functions
Pin 116	PE7 — GPIO / alternate functions
Pin 117	PE8 — GPIO / alternate functions
Pin 118	PE9 — GPIO / alternate functions
Pin 119	PE10 — GPIO / alternate functions
Pin 120	PE11 — GPIO / alternate functions
Pin 121	PE12 — GPIO / alternate functions
Pin 122	PE13 — GPIO / alternate functions
Pin 123	PE14 — GPIO / alternate functions
Pin 124	PE15 — GPIO / alternate functions
Pin 125	PB10 — GPIO / alternate functions
Pin 126	PB11 — GPIO / alternate functions
Pin 127	VSS — Ground
Pin 128	VDD — Digital power supply
Pin 129	PB12 — GPIO / alternate functions
Pin 130	PB13 — GPIO / alternate functions
Pin 131	PB14 — GPIO / alternate functions
Pin 132	PB15 — GPIO / alternate functions
Pin 133	PD8 — GPIO / alternate functions
Pin 134	PD9 — GPIO / alternate functions
Pin 135	PD10 — GPIO / alternate functions
Pin 136	PD11 — GPIO / alternate functions
Pin 137	PD12 — GPIO / alternate functions
Pin 138	PD13 — GPIO / alternate functions
Pin 139	PD14 — GPIO / alternate functions
Pin 140	PD15 — GPIO / alternate functions
Pin 141	PA0 — GPIO / ADC input / WKUP
Pin 142	PA1 — GPIO / ADC input
Pin 143	PA2 — GPIO / USART2_TX
Pin 144	PA3 — GPIO / USART2_RX

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

STM32H7B3ZIT6 is suitable for 6 applications: Industrial Automation, Human-Machine Interface (HMI), Motor Control, Audio Processing, IoT Gateway, Medical Devices.

🏭

Industrial Automation

The STM32H7B3ZIT6 is ideal for industrial automation controllers due to its high clock speed, rich communication interfaces (Ethernet, FDCAN, USART), and advanced timers for precise motor control. It can handle complex PLC logic, real-time control loops, and HMI interfaces simultaneously. The 2 MB flash allows storing large firmware and data logs, while the 1.4 MB SRAM supports large data buffers for industrial protocols. The device's robust operating temperature range (-40°C to +85°C) ensures reliability in factory environments. Its cryptographic acceleration enhances secure communication in industrial IoT applications.

Recommended

TJA1042 (CAN transceiver for FDCAN interface) LAN8720A (Ethernet PHY for MAC interface)

📺

Human-Machine Interface (HMI)

The STM32H7B3ZIT6 excels in HMI applications with its Chrom-ART Accelerator, which offloads 2D graphics rendering from the CPU, enabling smooth animations and responsive touch interfaces. The device supports external SDRAM via its flexible memory controller, allowing large frame buffers for high-resolution displays. The 280 MHz Cortex-M7 core handles complex UI logic and communication with ease. The device's rich peripheral set includes LTDC (LCD-TFT controller) and DSI host, simplifying display integration. The 2 MB flash provides ample storage for GUI assets and fonts. This makes it suitable for smart home panels, industrial HMIs, and medical devices.

Recommended

FT5x06 (Capacitive touch controller for HMI) IS42S16400J (SDRAM for frame buffer)

⚡

Motor Control

The STM32H7B3ZIT6 is well-suited for motor control applications, including field-oriented control (FOC) of BLDC and PMSM motors. Its advanced timers generate complementary PWM signals with dead-time insertion, while the 16-bit ADC with 3.6 MSPS provides high-speed current sensing. The device's high clock speed ensures fast control loop execution, and the 2 MB flash allows storing complex control algorithms and safety routines. The FDCAN interface enables communication with industrial drives. The device's cryptographic acceleration can be used for secure firmware updates. The wide supply voltage range and industrial temperature range make it robust for motor drive environments.

Recommended

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

🎧

Audio Processing

The STM32H7B3ZIT6 is capable of high-quality audio processing due to its high clock speed and DSP instructions. It can handle audio codecs, effects processing, and audio streaming. The device includes I2S interfaces for connecting audio codecs, and its DMA controllers enable efficient data transfer. The 1.4 MB SRAM allows buffering large audio samples, and the 2 MB flash can store audio data or firmware. The Chrom-ART Accelerator can be used for audio visualizations. The device's low-latency interrupt handling ensures real-time audio performance. This makes it suitable for audio interfaces, smart speakers, and professional audio equipment.

Recommended

CS42L51 (Audio codec for I2S interface) TAS5754M (Digital audio amplifier)

🌐

IoT Gateway

The STM32H7B3ZIT6 is an excellent choice for IoT gateways due to its Ethernet MAC, USB OTG, and multiple communication interfaces. It can aggregate data from various sensors and devices, process it locally, and transmit to the cloud via Ethernet or Wi-Fi (using external modules). The device's cryptographic acceleration ensures secure data transmission and firmware updates. The 2 MB flash and 1.4 MB SRAM provide ample resources for protocol stacks and data buffering. The device's low-power modes enable energy-efficient operation. This makes it suitable for smart building controllers, industrial IoT gateways, and edge computing nodes.

Recommended

ESP32 (Wi-Fi module for wireless connectivity) LAN8720A (Ethernet PHY for wired connectivity)

💊

Medical Devices

The STM32H7B3ZIT6 is suitable for medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high performance enables real-time signal processing, while the rich peripheral set supports various sensors and displays. The device's cryptographic acceleration can secure patient data. The 2 MB flash allows storing complex algorithms and patient data logs. The device's reliability and long-term availability make it suitable for medical applications. The industrial temperature range ensures operation in clinical environments. The device's low-power modes are beneficial for battery-powered portable medical devices.

Recommended

ADS1298 (Biopotential ADC for ECG/EEG) SSD1306 (OLED display for patient interface)

Recommended Products Summary

TJA1042 CAN transceiver for FDCAN interface Used in: Industrial Automation LAN8720A Ethernet PHY for MAC interface Used in: Industrial Automation, IoT Gateway FT5x06 Capacitive touch controller for HMI Used in: Human-Machine Interface (HMI) IS42S16400J SDRAM for frame buffer Used in: Human-Machine Interface (HMI) IR2104 Gate driver for MOSFET/IGBT Used in: Motor Control ACS712 Current sensor for motor phase Used in: Motor Control CS42L51 Audio codec for I2S interface Used in: Audio Processing TAS5754M Digital audio amplifier Used in: Audio Processing ESP32 Wi-Fi module for wireless connectivity Used in: IoT Gateway ADS1298 Biopotential ADC for ECG/EEG Used in: Medical Devices SSD1306 OLED display for patient interface Used in: Medical Devices

What is the maximum clock speed of STM32H7B3ZIT6?

The STM32H7B3ZIT6 operates at a maximum clock speed of 280 MHz. According to the STMicroelectronics datasheet, this is achieved with the Arm Cortex-M7 core and a 1.62V to 3.6V supply. This high clock speed enables 856 CoreMark points, making it suitable for real-time control and signal processing.

How much flash memory does STM32H7B3ZIT6 have?

The STM32H7B3ZIT6 has 2 MB of flash memory. This is organized as dual-bank flash, allowing simultaneous read-while-write operations. The large flash capacity supports complex firmware and data logging applications without external memory.

What is the difference between STM32H7B3ZIT6 and STM32H7B3ZET6?

The STM32H7B3ZIT6 and STM32H7B3ZET6 differ in package and pin count. The ZIT6 is in a 144-pin LQFP package, while the ZET6 is in a 144-pin LQFP as well, but the ZET6 has 512 KB flash and 1 MB SRAM, whereas the ZIT6 has 2 MB flash and 1.4 MB SRAM. Both share the same core and peripherals, but the ZIT6 offers more memory for data-intensive applications.

Can STM32H7B3ZIT6 be used for motor control?

Yes, the STM32H7B3ZIT6 is well-suited for motor control applications. It features advanced timers with complementary PWM outputs, a 16-bit ADC with 3.6 MSPS for current sensing, and multiple FDCAN interfaces for industrial communication. The high clock speed ensures fast control loops, and the 2 MB flash allows storing complex control algorithms.

What is the supply voltage range of STM32H7B3ZIT6?

The STM32H7B3ZIT6 operates from 1.62V to 3.6V. This wide range allows flexible power supply design, including battery-powered applications. The device has an internal LDO that can be bypassed for lower power consumption, but the external supply must be within the specified range.

Does STM32H7B3ZIT6 support Ethernet?

Yes, the STM32H7B3ZIT6 includes a 10/100 Ethernet MAC with dedicated DMA. This enables network connectivity for industrial IoT and remote monitoring applications. The MAC supports MII and RMII interfaces, and requires an external PHY chip.

What is the price of STM32H7B3ZIT6?

As of 2026-08-13, the price of STM32H7B3ZIT6 is approximately $12.50 for single-unit quantities, decreasing to $8.10 at 1000 units. Prices vary by distributor and quantity, and are subject to change. Check DigiKey or Mouser for current pricing and availability.

Where can I buy STM32H7B3ZIT6?

STM32H7B3ZIT6 is available from major distributors such as DigiKey, Mouser, and Farnell. You can also purchase directly from STMicroelectronics' authorized distributors. Ensure you verify the part's authenticity and lifecycle status before ordering.

What is the lead time for STM32H7B3ZIT6?

The lead time for STM32H7B3ZIT6 typically ranges from 8 to 12 weeks, depending on distributor stock and order quantity. As of 2026-08-13, some distributors may have stock available for immediate shipment. Contact your preferred distributor for accurate lead time information.

Is STM32H7B3ZIT6 in stock?

Stock availability for STM32H7B3ZIT6 varies by distributor. As of 2026-08-13, DigiKey and Mouser may have limited stock. Check their websites for real-time inventory and lead times. For large quantities, consider contacting STMicroelectronics directly.

What is the best drop-in replacement for STM32H7B3ZIT6?

The best drop-in replacement for STM32H7B3ZIT6 is the STM32H7B3ZIT6Q, which is the same device in a different package variant (LQFP144) with identical pinout and specifications. Other pin-compatible alternatives include STM32H7A3ZIT6 and STM32H7B0ZIT6, but verify memory and peripheral differences before substitution.

Can STM32H7A3ZIT6 replace STM32H7B3ZIT6?

Yes, the STM32H7A3ZIT6 is a drop-in replacement for STM32H7B3ZIT6 in terms of package and pinout, but it has 2 MB flash and 1.4 MB SRAM, similar to the B3. However, the H7A3 lacks the Chrom-ART Accelerator and has a lower max clock of 280 MHz. Verify your application's requirements before substitution.

What is the difference between STM32H7B3ZIT6 and STM32H743ZIT6?

The STM32H743ZIT6 is an older H7 variant with 2 MB flash and 1 MB SRAM, running at 480 MHz. The STM32H7B3ZIT6 runs at 280 MHz but has 1.4 MB SRAM and includes the Chrom-ART Accelerator. The H743 has more processing power but less SRAM and no Chrom-ART. Choose based on your performance and graphics needs.

Where can I download the STM32H7B3ZIT6 datasheet PDF?

You can download the STM32H7B3ZIT6 datasheet PDF from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32h7b3zi.pdf. The datasheet contains full specifications, pinout, and electrical characteristics.

Where can I find the STM32H7B3ZIT6 pinout?

The STM32H7B3ZIT6 pinout is detailed in the datasheet and the STM32H7B3ZI reference manual (RM0433). The pinout diagram is available in the datasheet's pin descriptions section, and the reference manual provides detailed pin functions and alternate functions.

What are the key specifications of STM32H7B3ZIT6 that engineers should know?

Engineers should know that the STM32H7B3ZIT6 features a 280 MHz Cortex-M7 core, 2 MB flash, 1.4 MB SRAM, 114 GPIOs, 3x 16-bit ADCs at 3.6 MSPS, Ethernet MAC, USB OTG HS, and cryptographic acceleration. It operates from 1.62V to 3.6V and is available in LQFP144. These specs make it ideal for high-performance embedded applications.

Hey Google, what can replace STM32H7B3ZIT6?

The STM32H7B3ZIT6 can be replaced by pin-compatible STM32H7 series MCUs such as STM32H7A3ZIT6, STM32H7B0ZIT6, and STM32H743ZIT6. These share the LQFP144 package and similar pinout, but verify memory, clock speed, and peripheral differences. For cross-brand alternatives, consider NXP i.MX RT1052 or Renesas RZ/A2M, but they may require PCB changes.

Is STM32H7B3ZIT6 the same as STM32H7A3ZIT6?

No, the STM32H7B3ZIT6 and STM32H7A3ZIT6 are not the same. While they share the same package and pinout, the H7B3 has a Chrom-ART Accelerator and 1.4 MB SRAM, whereas the H7A3 has 2 MB flash and 1.4 MB SRAM but lacks Chrom-ART. The H7B3 also has a slightly different peripheral set. They are drop-in compatible but not identical.

What is the best STMicroelectronics equivalent for STM32H7B3ZIT6?

The best STMicroelectronics equivalent for STM32H7B3ZIT6 is the STM32H7B3ZIT6Q, which is the same silicon in a different package variant (LQFP144) with identical specifications. Other STM32H7 series parts like STM32H7A3ZIT6 and STM32H743ZIT6 are also pin-compatible but have different memory and peripheral configurations.

What is the operating temperature range of STM32H7B3ZIT6?

The STM32H7B3ZIT6 operates over a temperature range of -40°C to +85°C. This industrial temperature range makes it suitable for harsh environments. For extended temperature ranges, consider the STM32H7B3ZIT6Q with -40°C to +125°C option.

Engineering reference data for STM32H7B3ZIT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32H7B3ZIT6 when you need a high-performance MCU with 2 MB flash, 1.4 MB SRAM, and a Chrom-ART Accelerator for graphics-intensive HMI applications. If you require higher clock speed (480 MHz) and can sacrifice SRAM, consider the STM32H743ZIT6. For applications with limited flash but high speed, the STM32H750ZBT6 offers 128 KB flash at 480 MHz. The STM32H7A3ZIT6 is a drop-in alternative with similar memory but no Chrom-ART, suitable for cost-sensitive designs. All alternatives share the LQFP144 package, allowing PCB reuse. Evaluate your specific requirements for graphics, memory, and power to make the best choice.

Comparison with Alternatives

Parameter	This Product	STM32H7A3ZIT6	STM32H7B0ZIT6	STM32H743ZIT6	STM32H753ZIT6	STM32H750ZBT6
Package	LQFP144	LQFP144	LQFP144	LQFP144	LQFP144	LQFP144
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Max Clock Speed	280 MHz	280 MHz	280 MHz	480 MHz	480 MHz	480 MHz
Flash Memory	2 MB	2 MB	2 MB	2 MB	2 MB	128 KB
SRAM	1.4 MB	1.4 MB	1.4 MB	1 MB	1 MB	1 MB
Chrom-ART Accelerator	Yes	No	No	No	No	No
Ethernet MAC	Yes	Yes	Yes	Yes	Yes	Yes
Cryptographic Acceleration	Yes	Yes	Yes	Yes	Yes	Yes

Key Differentiators

Chrom-ART Accelerator for 2D graphics (vs STM32H743ZIT6)
Higher SRAM capacity (1.4 MB) (vs STM32H743ZIT6)
Lower power consumption at 280 MHz (vs STM32H743ZIT6)

Design Notes

The STM32H7B3ZIT6 requires a stable power supply. Use a 100nF decoupling capacitor on each VDD pin and a 4.7uF bulk capacitor on the main supply. The VDDA pin should be filtered with a ferrite bead and a 1uF capacitor to reduce analog noise. Ensure the supply voltage is within 1.62V to 3.6V. For low-power operation, the internal LDO can be bypassed by connecting VCAP pins to an external capacitor, but follow the datasheet recommendations.

For the LQFP144 package, ensure proper grounding and thermal relief. Use a solid ground plane and place vias near the ground pins. The exposed pad (if present) should be soldered to the ground plane for thermal dissipation. Keep high-speed traces short and avoid routing near the crystal oscillator pins. Follow the layout guidelines in the STM32H7 hardware development application note (AN4666).

A common pitfall is incorrect boot configuration. The BOOT0 pin must be set correctly to boot from flash, system memory, or SRAM. Also, ensure the HSE crystal is properly connected with load capacitors as specified in the datasheet. Do not exceed the absolute maximum ratings on any pin. For firmware development, use the STM32CubeH7 software package and STM32CubeProgrammer for flashing.

Compliance Information

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Yes

Conflict Minerals

Compliant

RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32H7A3ZIT6Q or other automotive-grade variants.

Data verified on: 2026-08-13

Sources: Distributor, Distributor, Distributor