STM32F429BIT6 - 180MHz ARM Cortex-M4 MCU with 2MB Flash | STMicroelectronics
MPN: STM32F429BIT6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.8 | $168.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.9 | $6,450.00 |
| 1,000 | $11.5 | $11,500.00 |
Drop-in alternatives for STM32F429BIT6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32F427BIT6
β Drop-Inπ Reference alternative (not in catalog)
STM32F429BIT7
β Drop-Inπ Reference alternative (not in catalog)
STM32F429BIT6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32F439BIT6
β Drop-Inπ Reference alternative (not in catalog)
LPC4357FET256
β‘ Same Packageπ Reference alternative (not in catalog)
R7S721000VCBG
β‘ Same Packageπ Reference alternative (not in catalog)
STM32F429BIT6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4 with FPU |
| Maximum Clock Frequency | 180 MHz |
| Flash Memory | 2 MB |
| SRAM | 256 KB |
| Package | LQFP208 (28x28 mm) |
| Supply Voltage | 1.8V to 3.6V |
| Operating Temperature | -40C to +85C |
| Number of I/Os | 168 |
| ADC | 3x 12-bit, 2.4 MSPS |
| DAC | 2x 12-bit |
| Communication Interfaces | USB OTG HS/FS, Ethernet MAC, 4x USART, 4x SPI, 3x I2C, 2x CAN |
| Timers | 12x 16-bit, 2x 32-bit |
| DMA | 16-stream DMA controller |
| RTC | Yes |
| RoHS Status | Compliant |
STM32F429BIT6 Pin Configuration
| Pin 1 | PE2 β GPIO port E pin 2 |
| Pin 2 | PE3 β GPIO port E pin 3 |
| Pin 3 | PE4 β GPIO port E pin 4 |
| Pin 4 | PE5 β GPIO port E pin 5 |
| Pin 5 | PE6 β GPIO port E pin 6 |
| Pin 6 | VBAT β Backup battery supply |
| Pin 7 | PC13 β GPIO port C pin 13 (RTC/Tamper) |
| Pin 8 | PC14 β GPIO port C pin 14 (OSC32_IN) |
| Pin 9 | PC15 β GPIO port C pin 15 (OSC32_OUT) |
| Pin 10 | PF0 β GPIO port F pin 0 |
| Pin 11 | PF1 β GPIO port F pin 1 |
| Pin 12 | PF2 β GPIO port F pin 2 |
| Pin 13 | PF3 β GPIO port F pin 3 |
| Pin 14 | PF4 β GPIO port F pin 4 |
| Pin 15 | PF5 β GPIO port F pin 5 |
| Pin 16 | PF6 β GPIO port F pin 6 |
| Pin 17 | PF7 β GPIO port F pin 7 |
| Pin 18 | PF8 β GPIO port F pin 8 |
| Pin 19 | PF9 β GPIO port F pin 9 |
| Pin 20 | PF10 β GPIO port F pin 10 |
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
STM32F429BIT6 is suitable for 6 applications: Industrial Automation, Motor Control, Human-Machine Interface (HMI), IoT Gateway, Medical Devices, Smart Home.
Industrial Automation
The STM32F429BIT6 is ideal for industrial automation due to its high processing power, multiple communication interfaces (Ethernet, CAN, USART), and advanced timers for precise motor control. It can handle complex control algorithms and real-time data processing, making it suitable for PLCs, robotic controllers, and industrial HMI panels. The device's 180 MHz Cortex-M4 core with FPU accelerates mathematical computations, while the 2 MB Flash and 256 KB SRAM provide ample storage for firmware and data logging. Its robust temperature range (-40C to +85C) ensures reliable operation in harsh industrial environments.
Recommended
Motor Control
The STM32F429BIT6 excels in motor control applications, particularly field-oriented control (FOC) of brushless DC (BLDC) and permanent magnet synchronous motors (PMSM). Its advanced timers generate complementary PWM signals with dead-time insertion, while the 12-bit ADCs sample phase currents with high precision. The Cortex-M4 FPU accelerates the complex mathematical computations required for FOC, enabling high-speed control loops. The device also includes a quadrature encoder interface and hall sensor support, simplifying position feedback. With its rich peripheral set and high performance, the STM32F429BIT6 is a preferred choice for industrial drives, robotics, and automotive motor control systems.
Recommended
Human-Machine Interface (HMI)
The STM32F429BIT6 is well-suited for HMI applications due to its Chrom-ART Accelerator, which offloads graphics rendering from the CPU, and its support for external SDRAM via the flexible memory controller (FMC). This enables smooth GUI performance on TFT-LCD displays with high resolutions. The device's rich connectivity options (USB, Ethernet, UART) allow easy integration with touch controllers, communication modules, and host systems. The 2 MB Flash provides ample space for GUI assets, while the 256 KB SRAM supports frame buffering. With its high processing power and graphics acceleration, the STM32F429BIT6 is ideal for smart home panels, industrial HMIs, and medical device interfaces.
Recommended
IoT Gateway
The STM32F429BIT6 is an excellent choice for IoT gateways due to its Ethernet MAC, USB OTG, and multiple UART/SPI/I2C interfaces. It can connect to cloud services via Ethernet or Wi-Fi modules (through SPI or SDIO), and its low-power modes help reduce energy consumption. The device's high processing power enables protocol conversion, data aggregation, and edge computing. With 2 MB Flash and 256 KB SRAM, it can handle complex networking stacks such as lwIP and mbedTLS. The STM32F429BIT6 also supports secure boot and hardware cryptography (on the STM32F439 variant), enhancing security for IoT deployments.
Recommended
Medical Devices
The STM32F429BIT6 is suitable for medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high processing power supports real-time signal processing for ECG, EEG, and other biosignals. The device's multiple ADCs and DACs enable precise analog signal acquisition and generation. The large Flash and SRAM accommodate complex algorithms and data logging. The STM32F429BIT6's reliability and long-term availability make it a trusted choice for medical applications. Its compliance with RoHS and REACH ensures environmental safety, and its industrial temperature range supports various operating environments.
Recommended
Smart Home
The STM32F429BIT6 is ideal for smart home hubs and controllers due to its rich connectivity options and high processing power. It can manage multiple communication protocols (Zigbee, Z-Wave, Wi-Fi, Bluetooth) via external modules, and its Ethernet MAC enables wired backbone connectivity. The device's low-power modes are beneficial for always-on hubs, while its large memory supports complex home automation logic. With its advanced timers and ADCs, it can interface with sensors and actuators for lighting, HVAC, and security systems. The STM32F429BIT6's scalability and performance make it a versatile choice for smart home applications.
Recommended
Recommended Products Summary
Engineering reference data for STM32F429BIT6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F427BIT6 | STM32F429BIT7 | STM32F429BIT6TR | STM32F439BIT6 | LPC4357FET256 | R7S721000VCBG |
|---|---|---|---|---|---|---|---|
| Package | LQFP208 | LQFP208 - same | LQFP208 - same | LQFP208 - same | LQFP208 - same | LQFP208 - same | LQFP208 - same |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | NXP Semiconductors | Renesas Electronics |
| Core | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | ARM Cortex-M4 with FPU | Dual-core ARM Cortex-M4/M0 | ARM Cortex-A9 |
| Maximum Clock Frequency | 180 MHz | 180 MHz | 180 MHz | 180 MHz | 180 MHz | 204 MHz | 400 MHz |
| Flash Memory | 2 MB | 2 MB | 2 MB | 2 MB | 2 MB | 1 MB | 4 MB |
| SRAM | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 136 KB | 1.25 MB |
| Ethernet MAC | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| USB OTG | HS/FS | HS/FS | HS/FS | HS/FS | HS/FS | HS/FS | HS/FS |
| Chrom-ART Accelerator | Yes | No | Yes | Yes | Yes | No | No |
Key Differentiators
- Chrom-ART Accelerator for enhanced GUI performance (vs STM32F427BIT6)
- 2 MB dual-bank Flash for read-while-write (vs LPC4357FET256)
- Higher SRAM capacity (vs LPC4357FET256)
Design Notes
The STM32F429BIT6 requires a 3.3V supply. Decouple each VDD pin with a 100nF ceramic capacitor placed as close as possible to the pin. Additionally, use a 4.7uF capacitor on the VDDA pin and a ferrite bead in series to filter high-frequency noise. The VBAT pin should be connected to a backup battery (e.g., 3V coin cell) for RTC operation when main power is off.
For high-speed interfaces like USB and Ethernet, follow the layout guidelines in the STM32F4 datasheet and application notes. Use controlled impedance traces for USB D+/D- (90 ohms differential) and Ethernet (100 ohms differential). Place the external PHY and crystal oscillator close to the MCU to minimize trace lengths. Ensure a solid ground plane beneath the MCU for signal integrity.
Ensure the BOOT0 pin is configured correctly to boot from Flash (pull-down to GND). The NRST pin should have a 100nF capacitor to GND and a 10k ohm pull-up to VDD. Do not leave unused I/O pins floating; configure them as outputs or enable internal pull-ups/pull-downs to reduce power consumption and avoid noise. For ADC accuracy, use a low-pass filter on the analog input and ensure VDDA is clean.
Compliance Information
RoHS and REACH compliant per STMicroelectronics. Not AEC-Q100 qualified; for automotive, consider STM32F429BIT7Q or other automotive-grade variants.
