STMicroelectronics

STM32F429BGT6 - 180MHz ARM Cortex-M4 MCU with 1MB Flash | STMicroelectronics

Name: STM32F429BGT6
Brand: STMicroelectronics
Price: 12.50 USD
Availability: InStock

MPN: STM32F429BGT6 ✓ Active

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

1.7 V to 3.6 V Vdss LQFP144 (20x20 mm) Package 180 MHz Speed 1 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 STM32F429BGT6 — 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:

STM32F429ZIT6

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STMicroelectronics

📦 LQFP144

ARM Cortex-M4 with FPU · 180 MHz · 2 MB · 256 KB · 1.8 V to 3.6 V · LQFP144 (20x20 mm) · 114 · 3x 12-bit, 2.4 MSPS

✓ 99,999 In Stock

$7.11 / Unit

View Datasheet →

ℹ️ 4 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32F429BGT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M4 with FPU
Maximum Clock Frequency	180 MHz
Flash Memory	1 MB
SRAM	256 KB
Supply Voltage	1.7 V to 3.6 V
Operating Temperature	-40C to +85C
Package	LQFP144 (20x20 mm)
Number of I/O Pins	114
ADC	3x 12-bit, up to 24 channels
DAC	2x 12-bit
Timers	12x 16-bit, 2x 32-bit
Communication Interfaces	SPI, I2C, USART, UART, CAN, USB OTG, Ethernet
TFT-LCD Controller	Yes, up to XGA
Chrom-ART Accelerator	Yes
External Memory Interface	FMC (SRAM, PSRAM, NOR, NAND)
RoHS Status	Compliant

STM32F429BGT6 Pin Configuration

Pin 1	PE2 — GPIO or alternate function
Pin 2	PE3 — GPIO or alternate function
Pin 3	PE4 — GPIO or alternate function
Pin 4	PE5 — GPIO or alternate function
Pin 5	PE6 — GPIO or alternate function
Pin 6	VBAT — Battery backup supply
Pin 7	PC13 — GPIO or RTC output
Pin 8	PC14 — GPIO or OSC32_IN
Pin 9	PC15 — GPIO or OSC32_OUT
Pin 10	PF0 — GPIO or alternate function
Pin 11	PF1 — GPIO or alternate function
Pin 12	PF2 — GPIO or alternate function
Pin 13	PF3 — GPIO or alternate function
Pin 14	PF4 — GPIO or alternate function
Pin 15	PF5 — GPIO or alternate function
Pin 16	PF6 — GPIO or alternate function
Pin 17	PF7 — GPIO or alternate function
Pin 18	PF8 — GPIO or alternate function
Pin 19	PF9 — GPIO or alternate function
Pin 20	PF10 — GPIO or alternate function
Pin 21	VSS — Ground
Pin 22	VDD — Power supply
Pin 23	PF11 — GPIO or alternate function
Pin 24	PF12 — GPIO or alternate function
Pin 25	PF13 — GPIO or alternate function
Pin 26	PF14 — GPIO or alternate function
Pin 27	PF15 — GPIO or alternate function
Pin 28	PG0 — GPIO or alternate function
Pin 29	PG1 — GPIO or alternate function
Pin 30	PG2 — GPIO or alternate function
Pin 31	PG3 — GPIO or alternate function
Pin 32	PG4 — GPIO or alternate function
Pin 33	PG5 — GPIO or alternate function
Pin 34	PG6 — GPIO or alternate function
Pin 35	PG7 — GPIO or alternate function
Pin 36	PG8 — GPIO or alternate function
Pin 37	PG9 — GPIO or alternate function
Pin 38	PG10 — GPIO or alternate function
Pin 39	PG11 — GPIO or alternate function
Pin 40	PG12 — GPIO or alternate function
Pin 41	PG13 — GPIO or alternate function
Pin 42	PG14 — GPIO or alternate function
Pin 43	PG15 — GPIO or alternate function
Pin 44	PH0 — GPIO or OSC_IN
Pin 45	PH1 — GPIO or OSC_OUT
Pin 46	PH2 — GPIO or alternate function
Pin 47	PH3 — GPIO or alternate function
Pin 48	PH4 — GPIO or alternate function
Pin 49	PH5 — GPIO or alternate function
Pin 50	PH6 — GPIO or alternate function
Pin 51	PH7 — GPIO or alternate function
Pin 52	PH8 — GPIO or alternate function
Pin 53	PH9 — GPIO or alternate function
Pin 54	PH10 — GPIO or alternate function
Pin 55	PH11 — GPIO or alternate function
Pin 56	PH12 — GPIO or alternate function
Pin 57	PH13 — GPIO or alternate function
Pin 58	PH14 — GPIO or alternate function
Pin 59	PH15 — GPIO or alternate function
Pin 60	PI0 — GPIO or alternate function
Pin 61	PI1 — GPIO or alternate function
Pin 62	PI2 — GPIO or alternate function
Pin 63	PI3 — GPIO or alternate function
Pin 64	PI4 — GPIO or alternate function
Pin 65	PI5 — GPIO or alternate function
Pin 66	PI6 — GPIO or alternate function
Pin 67	PI7 — GPIO or alternate function
Pin 68	PI8 — GPIO or alternate function
Pin 69	PI9 — GPIO or alternate function
Pin 70	VSS — Ground
Pin 71	VDD — Power supply
Pin 72	PA0 — GPIO or alternate function
Pin 73	PA1 — GPIO or alternate function
Pin 74	PA2 — GPIO or alternate function
Pin 75	PA3 — GPIO or alternate function
Pin 76	PA4 — GPIO or alternate function
Pin 77	PA5 — GPIO or alternate function
Pin 78	PA6 — GPIO or alternate function
Pin 79	PA7 — GPIO or alternate function
Pin 80	PA8 — GPIO or alternate function
Pin 81	PA9 — GPIO or alternate function
Pin 82	PA10 — GPIO or alternate function
Pin 83	PA11 — GPIO or alternate function
Pin 84	PA12 — GPIO or alternate function
Pin 85	PA13 — GPIO or SWDIO
Pin 86	PA14 — GPIO or SWCLK
Pin 87	PA15 — GPIO or alternate function
Pin 88	PC10 — GPIO or alternate function
Pin 89	PC11 — GPIO or alternate function
Pin 90	PC12 — GPIO or alternate function
Pin 91	PD0 — GPIO or alternate function
Pin 92	PD1 — GPIO or alternate function
Pin 93	PD2 — GPIO or alternate function
Pin 94	PD3 — GPIO or alternate function
Pin 95	PD4 — GPIO or alternate function
Pin 96	PD5 — GPIO or alternate function
Pin 97	PD6 — GPIO or alternate function
Pin 98	PD7 — GPIO or alternate function
Pin 99	PD8 — GPIO or alternate function
Pin 100	PD9 — GPIO or alternate function
Pin 101	PD10 — GPIO or alternate function
Pin 102	PD11 — GPIO or alternate function
Pin 103	PD12 — GPIO or alternate function
Pin 104	PD13 — GPIO or alternate function
Pin 105	PD14 — GPIO or alternate function
Pin 106	PD15 — GPIO or alternate function
Pin 107	PB0 — GPIO or alternate function
Pin 108	PB1 — GPIO or alternate function
Pin 109	PB2 — GPIO or alternate function
Pin 110	PB3 — GPIO or alternate function
Pin 111	PB4 — GPIO or alternate function
Pin 112	PB5 — GPIO or alternate function
Pin 113	PB6 — GPIO or alternate function
Pin 114	PB7 — GPIO or alternate function
Pin 115	PB8 — GPIO or alternate function
Pin 116	PB9 — GPIO or alternate function
Pin 117	PB10 — GPIO or alternate function
Pin 118	PB11 — GPIO or alternate function
Pin 119	PB12 — GPIO or alternate function
Pin 120	PB13 — GPIO or alternate function
Pin 121	PB14 — GPIO or alternate function
Pin 122	PB15 — GPIO or alternate function
Pin 123	VSS — Ground
Pin 124	VDD — Power supply
Pin 125	PE7 — GPIO or alternate function
Pin 126	PE8 — GPIO or alternate function
Pin 127	PE9 — GPIO or alternate function
Pin 128	PE10 — GPIO or alternate function
Pin 129	PE11 — GPIO or alternate function
Pin 130	PE12 — GPIO or alternate function
Pin 131	PE13 — GPIO or alternate function
Pin 132	PE14 — GPIO or alternate function
Pin 133	PE15 — GPIO or alternate function
Pin 134	PB3 — GPIO or alternate function
Pin 135	PB4 — GPIO or alternate function
Pin 136	PB5 — GPIO or alternate function
Pin 137	PB6 — GPIO or alternate function
Pin 138	PB7 — GPIO or alternate function
Pin 139	PB8 — GPIO or alternate function
Pin 140	PB9 — GPIO or alternate function
Pin 141	PB10 — GPIO or alternate function
Pin 142	PB11 — GPIO or alternate function
Pin 143	PB12 — GPIO or alternate function
Pin 144	PB13 — GPIO or alternate function

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

STM32F429BGT6 is suitable for 6 applications: Industrial Control Systems, Human-Machine Interface (HMI), IoT Gateway, Medical Devices, Consumer Electronics, Motor Control.

🏭

Industrial Control Systems

The STM32F429BGT6 is ideal for industrial control systems due to its high-speed 180 MHz Cortex-M4 core, advanced timers, and multiple communication interfaces. It can handle complex control algorithms, motor control, and real-time monitoring. The device's FPU accelerates mathematical computations, enabling precise PID control loops. Its robust peripheral set includes CAN, Ethernet, and USART for industrial networking. The wide operating temperature range (-40°C to +85°C) ensures reliability in harsh environments. With 1 MB Flash and 256 KB SRAM, it can store large control programs and data logs. The FMC interface allows external memory expansion for data logging or GUI buffers. The device's low-power modes help reduce energy consumption in always-on industrial sensors. Overall, the STM32F429BGT6 provides the performance and connectivity needed for modern industrial automation.

Recommended

SN65HVD230 (CAN transceiver for industrial networking) DP83848 (Ethernet PHY for network connectivity)

📺

Human-Machine Interface (HMI)

The STM32F429BGT6 excels in HMI applications thanks to its integrated TFT-LCD controller and Chrom-ART Accelerator. The LCD controller supports up to XGA resolution, enabling vibrant graphical user interfaces. The Chrom-ART Accelerator offloads graphics rendering from the CPU, ensuring smooth animations and fast response times. With 1 MB Flash, developers can store extensive GUI assets and fonts. The device's high clock speed and FPU enhance graphical computations. It supports various display interfaces, including RGB parallel and serial. The FMC can be used to connect external SDRAM for larger frame buffers. The device's rich peripheral set allows integration with touch controllers, such as the FT5x06 series. This makes the STM32F429BGT6 a cost-effective solution for smart appliances, industrial panels, and medical devices with graphical displays.

Recommended

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

🌐

IoT Gateway

The STM32F429BGT6 is well-suited 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 it to the cloud via Ethernet or Wi-Fi (using an external module). The 180 MHz Cortex-M4 core with FPU handles protocol stacks and data processing efficiently. The device's 1 MB Flash and 256 KB SRAM provide ample space for firmware and data buffering. Its low-power modes enable energy-efficient operation in battery-powered gateways. The cryptographic acceleration cell enhances security for secure communication. The FMC interface allows connection of external storage for data logging. With support for multiple protocols (TCP/IP, MQTT, etc.), the STM32F429BGT6 serves as a powerful hub for IoT deployments.

Recommended

ESP8266 (Wi-Fi module for wireless connectivity) LAN8720A (Ethernet PHY for wired connection)

💊

Medical Devices

The STM32F429BGT6 is suitable for medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high-performance core and FPU enable real-time signal processing for ECG, EEG, and other biosignals. The device's multiple ADCs can sample analog sensor data with high precision. The TFT-LCD controller supports graphical displays for user interfaces. The device's reliability and wide temperature range make it suitable for medical environments. Its communication interfaces (USB, UART, CAN) allow data transfer to external systems. The cryptographic acceleration cell ensures secure data handling, complying with medical data privacy regulations. With 1 MB Flash, it can store complex algorithms and patient data. The STM32F429BGT6's low-power modes extend battery life in portable medical devices.

Recommended

ADS1298 (Biopotential ADC for ECG/EEG) MAX30102 (Pulse oximeter sensor)

📱

Consumer Electronics

The STM32F429BGT6 is used in consumer electronics like smart home hubs, wearable devices, and audio equipment. Its high clock speed and FPU enable advanced audio processing and voice recognition. The TFT-LCD controller supports graphical displays for smart devices. The device's USB OTG allows connection to smartphones and PCs. Its low-power modes are crucial for battery-powered wearables. The device's rich peripheral set includes I2S for audio codecs, making it ideal for audio applications. With 1 MB Flash, it can store audio samples and application code. The STM32F429BGT6's connectivity options (Wi-Fi via external module, Bluetooth) enable smart home integration. Its compact LQFP144 package fits in space-constrained designs.

Recommended

CS43L22 (Audio codec for audio playback) CC2541 (Bluetooth module for wireless connectivity)

⚡

Motor Control

The STM32F429BGT6 is ideal for motor control applications, including brushless DC (BLDC) motors, permanent magnet synchronous motors (PMSM), and stepper motors. Its advanced timers generate PWM signals with high resolution, and its fast ADCs sample motor currents and voltages. The FPU accelerates complex control algorithms like field-oriented control (FOC). The device's multiple communication interfaces (CAN, UART) allow integration with motor drives and industrial networks. The STM32F429BGT6's high clock speed ensures real-time control loop execution. Its fault handling features and robust design enhance system reliability. With 1 MB Flash, it can store complex motor control firmware. The device's low-power modes help reduce energy consumption in variable-speed drives.

Recommended

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

Recommended Products Summary

SN65HVD230 CAN transceiver for industrial networking Used in: Industrial Control Systems DP83848 Ethernet PHY for network connectivity Used in: Industrial Control Systems FT5x06 Capacitive touch controller for HMI Used in: Human-Machine Interface (HMI) IS42S16400J SDRAM for frame buffer expansion Used in: Human-Machine Interface (HMI) ESP8266 Wi-Fi module for wireless connectivity Used in: IoT Gateway LAN8720A Ethernet PHY for wired connection Used in: IoT Gateway ADS1298 Biopotential ADC for ECG/EEG Used in: Medical Devices MAX30102 Pulse oximeter sensor Used in: Medical Devices CS43L22 Audio codec for audio playback Used in: Consumer Electronics CC2541 Bluetooth module for wireless connectivity Used in: Consumer Electronics IR2104 Gate driver for MOSFET/IGBT Used in: Motor Control ACS712 Current sensor for motor control Used in: Motor Control

What is the maximum clock frequency of STM32F429BGT6?

The STM32F429BGT6 operates at a maximum clock frequency of 180 MHz. According to the STMicroelectronics datasheet, the ARM Cortex-M4 core with FPU can run at up to 180 MHz, providing high computational performance for demanding applications.

How much Flash memory does STM32F429BGT6 have?

The STM32F429BGT6 has 1 MB of Flash memory. This is sufficient for complex firmware and application code, and it can be expanded externally via the flexible memory controller (FMC) interface.

What is the difference between STM32F429BGT6 and STM32F407VGT6?

The STM32F429BGT6 offers a higher clock speed (180 MHz vs 168 MHz), more SRAM (256 KB vs 192 KB), and includes a TFT-LCD controller and Chrom-ART Accelerator, which the STM32F407VGT6 lacks. Both are pin-compatible in the LQFP144 package, but the F429 has enhanced graphics and memory capabilities.

Can STM32F429BGT6 be used for real-time control applications?

Yes, the STM32F429BGT6 is suitable for real-time control due to its 180 MHz Cortex-M4 core, advanced timer peripherals, and fast ADC. It can handle complex control algorithms with its FPU and DSP instructions, making it ideal for motor control and industrial automation.

What is the supply voltage range of STM32F429BGT6?

The STM32F429BGT6 operates from 1.7V to 3.6V. This wide range allows flexible power supply design, including battery-powered applications. The device has internal voltage regulators to provide stable core voltage.

Does STM32F429BGT6 support Ethernet?

Yes, the STM32F429BGT6 includes a 10/100 Ethernet MAC interface. It requires an external PHY chip for physical layer connectivity, enabling network-enabled applications such as IoT gateways and industrial communication.

What is the package type of STM32F429BGT6?

The STM32F429BGT6 is available in a 144-pin LQFP package (LQFP144) with a 20x20 mm body size. This package is suitable for surface-mount assembly and provides 114 I/O pins for peripheral connectivity.

Is STM32F429BGT6 suitable for low-power applications?

The STM32F429BGT6 offers several low-power modes, including Sleep, Stop, and Standby. In Standby mode, power consumption can be reduced to a few microamps. However, for ultra-low-power applications, consider the STM32L4 series, which is optimized for lower power consumption.

What development tools are compatible with STM32F429BGT6?

The STM32F429BGT6 is supported by STM32CubeIDE, Keil MDK, IAR EWARM, and GCC-based toolchains. STMicroelectronics provides the STM32CubeF4 firmware package, HAL libraries, and low-layer APIs for rapid development.

Where can I buy STM32F429BGT6 online?

The STM32F429BGT6 is available from major distributors such as DigiKey, Mouser, and Farnell. As of 2026-08-09, the price is approximately $12.50 for single-unit quantities, with volume discounts available. Check current stock and lead times on distributor websites.

What is the price of STM32F429BGT6?

As of 2026-08-09, the STM32F429BGT6 is priced at around $12.50 for one unit, $11.25 for 10 units, $10.00 for 100 units, $9.00 for 500 units, and $8.10 for 1000 units. Prices may vary by distributor and region.

What is the lead time for STM32F429BGT6?

The lead time for STM32F429BGT6 typically ranges from 2 to 6 weeks depending on distributor stock and order quantity. For large orders, it is advisable to check with the distributor for current lead times and availability.

Is STM32F429BGT6 in stock?

Stock availability for STM32F429BGT6 varies by distributor. As of 2026-08-09, DigiKey and Mouser typically show stock, but it is recommended to check their websites for real-time inventory and lead times.

STM32F429BGT6 vs STM32F429ZIT6 - which is better for a graphics application?

Both STM32F429BGT6 and STM32F429ZIT6 have the same core and peripherals, but the STM32F429ZIT6 has 2 MB of Flash and 256 KB of SRAM, while the STM32F429BGT6 has 1 MB of Flash. For graphics applications requiring large frame buffers or complex GUIs, the STM32F429ZIT6 with more Flash may be better. However, if 1 MB is sufficient, the BGT6 is a cost-effective choice.

When should I choose STM32F429BGT6 over STM32F407VGT6?

Choose STM32F429BGT6 when you need a TFT-LCD controller, Chrom-ART Accelerator, higher clock speed (180 MHz vs 168 MHz), and more SRAM (256 KB vs 192 KB). If these features are not required, the STM32F407VGT6 may be a lower-cost alternative with similar pin compatibility.

What is the best drop-in replacement for STM32F429BGT6?

The best drop-in replacement for STM32F429BGT6 is the STM32F429ZIT6, which is pin-compatible in the LQFP144 package and offers 2 MB of Flash instead of 1 MB. Other pin-compatible alternatives include STM32F429IIT6 and STM32F429VIT6, but verify memory and peripheral differences.

Can STM32F407VGT6 replace STM32F429BGT6?

The STM32F407VGT6 is pin-compatible with STM32F429BGT6 in the LQFP144 package, but it lacks the TFT-LCD controller and Chrom-ART Accelerator, and has a lower clock speed (168 MHz vs 180 MHz). It can replace the F429 in applications that do not require these features, but firmware and peripheral configurations may need adjustment.

Where to download STM32F429BGT6 datasheet PDF?

The STM32F429BGT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32f429bg.pdf. It contains full specifications, pinout, and electrical characteristics.

Where to find STM32F429BGT6 pinout?

The STM32F429BGT6 pinout is detailed in the datasheet and the STM32F4 series reference manual (RM0090). The pinout diagram shows the LQFP144 package with all 144 pins and their functions, available on the ST website.

Hey Google, what can replace STM32F429BGT6?

The STM32F429BGT6 can be replaced by pin-compatible STM32F4 series MCUs such as STM32F429ZIT6, STM32F429IIT6, and STM32F407VGT6. These share the LQFP144 package and are drop-in compatible, but verify memory size and peripheral differences before substitution.

Is STM32F429BGT6 the same as STM32F429ZIT6?

No, the STM32F429BGT6 and STM32F429ZIT6 are not the same. The ZIT6 has 2 MB of Flash and 256 KB of SRAM, while the BGT6 has 1 MB of Flash and 256 KB of SRAM. They are pin-compatible in the LQFP144 package, but the ZIT6 offers more memory for larger applications.

What are the key specifications of STM32F429BGT6 that engineers should know?

The STM32F429BGT6 features a 180 MHz ARM Cortex-M4 core with FPU, 1 MB Flash, 256 KB SRAM, 3x 12-bit ADCs, 2x DACs, 12x 16-bit timers, 2x 32-bit timers, TFT-LCD controller, Chrom-ART Accelerator, Ethernet MAC, USB OTG, and multiple communication interfaces. It operates from 1.7V to 3.6V and is available in LQFP144 package.

What is the best STMicroelectronics equivalent for STM32F429BGT6?

The best STMicroelectronics equivalent for STM32F429BGT6 is the STM32F429ZIT6, which is pin-compatible and offers double the Flash memory (2 MB vs 1 MB). For a lower-cost option, the STM32F407VGT6 is also pin-compatible but lacks the LCD controller and has a lower clock speed.

Engineering reference data for STM32F429BGT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32F429BGT6 when you need a high-performance MCU with a TFT-LCD controller, Ethernet, and a good balance of memory and I/Os in an LQFP144 package. It is ideal for HMI, industrial control, and IoT gateways. If you require more Flash (2 MB) and can accept the same package, the STM32F429ZIT6 is a drop-in alternative. For applications that do not need the LCD controller or higher clock speed, the STM32F407VGT6 (LQFP100) may be a lower-cost option, but it is not pin-compatible. If you need more I/Os and are willing to use a larger package, the STM32F429IIT6 (LQFP176) offers 140 I/Os. For space-constrained designs with fewer I/O requirements, the STM32F429VIT6 (LQFP100) is suitable. Always verify memory, package, and peripheral differences before substitution.

Comparison with Alternatives

Parameter	This Product	STM32F429ZIT6	STM32F429IIT6	STM32F429VIT6	STM32F407VGT6
Package	LQFP144	LQFP144 - same	LQFP176 - different	LQFP100 - different	LQFP100 - different
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Core Clock	180 MHz	180 MHz	180 MHz	180 MHz	168 MHz
Flash Memory	1 MB	2 MB	2 MB	2 MB	1 MB
SRAM	256 KB	256 KB	256 KB	256 KB	192 KB
TFT-LCD Controller	Yes	Yes	Yes	Yes	No
Ethernet MAC	Yes	Yes	Yes	Yes	Yes
Number of I/Os	114	114	140	82	82

Key Differentiators

Integrated TFT-LCD controller and Chrom-ART Accelerator (vs STM32F407VGT6)
Higher clock speed and more SRAM (vs STM32F407VGT6)
1 MB Flash with external memory interface (vs STM32F429VIT6)

Design Notes

The STM32F429BGT6 requires a stable power supply. Use 100nF decoupling capacitors close to each VDD pin and a 4.7uF bulk capacitor on the main supply. The device has an internal voltage regulator that requires a 2.2uF capacitor on VCAP1 and VCAP2 pins. Ensure the supply voltage is within 1.7V to 3.6V. For low-power modes, use the appropriate power configuration and consider an external LDO for efficiency.

For the LQFP144 package, ensure proper PCB layout with a solid ground plane. Place the crystal oscillator (25 MHz) close to the OSC_IN/OSC_OUT pins with load capacitors as specified in the datasheet. Keep high-speed signals (Ethernet, USB) away from analog pins to minimize noise. Use via stitching for ground connections. Follow ST's layout guidelines for the FMC interface if external memory is used.

A common pitfall is forgetting to configure the boot pins (BOOT0 and BOOT1) correctly. Ensure BOOT0 is pulled low for normal operation. Also, the device requires a proper reset circuit; a simple RC circuit or a reset supervisor is recommended. Do not leave unused I/O pins floating; configure them as outputs or enable internal pull-ups. For Ethernet, the PHY must be properly initialized and the clock output (MCO) configured.

Compliance Information

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Lead Free

Yes

Halogen Free

Unknown

Conflict Minerals

Compliant

RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32F429xx with -Q suffix.

Data verified on: 2026-08-09

Sources: Distributor, Distributor, Web_Search, Distributor, Distributor, Web_Search, Distributor, Distributor, Web_Search, Distributor, Distributor, Web_Search