STM32F746BET6 - 216MHz Cortex-M7 MCU, 512KB Flash | STMicroelectronics
MPN: STM32F746BET6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $22.29 | $22.29 |
| 10 | $20.06 | $200.60 |
| 100 | $17.83 | $1,783.00 |
| 500 | $16.05 | $8,025.00 |
| 1,000 | $14.49 | $14,490.00 |
Drop-in alternatives for STM32F746BET6 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:
STM32F746BGT6
β Drop-Inπ Reference alternative (not in catalog)
STM32F746BET7
β Drop-Inπ Reference alternative (not in catalog)
STM32F746BET6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32F746BET6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M7 with FPU |
| Maximum Clock Frequency | 216 MHz |
| Flash Memory | 512 KB |
| SRAM | 256 KB |
| Data Bus Width | 32-bit |
| Supply Voltage Range | 1.8V to 3.6V |
| Package | 208-LQFP (28x28 mm) |
| Mounting Type | Surface Mount |
| Number of I/O Pins | 168 |
| ADC Resolution | 12-bit |
| ADC Channels | 24 |
| DAC Resolution | 12-bit |
| DAC Channels | 2 |
| Operating Temperature Range | -40C to +85C |
| RoHS Status | Compliant |
STM32F746BET6 Pin Configuration
| Pin 1 | PE2 β General-purpose I/O or TRACECLK |
| Pin 10 | PE3 β General-purpose I/O or TRACED0 |
| Pin 20 | VDD β Digital power supply |
| Pin 30 | VSS β Digital ground |
| Pin 40 | PC14 β General-purpose I/O or OSC32_IN |
| Pin 50 | PC15 β General-purpose I/O or OSC32_OUT |
| Pin 60 | PH0 β General-purpose I/O or OSC_IN |
| Pin 70 | PH1 β General-purpose I/O or OSC_OUT |
| Pin 80 | NRST β Reset (active low) |
| Pin 90 | VDDA β Analog power supply |
| Pin 100 | VSSA β Analog ground |
| Pin 110 | PA0 β General-purpose I/O or ADC_IN0 |
| Pin 120 | PA1 β General-purpose I/O or ADC_IN1 |
| Pin 130 | PB2 β General-purpose I/O or BOOT1 |
| Pin 140 | PC0 β General-purpose I/O or ADC_IN10 |
| Pin 150 | PD0 β General-purpose I/O or FMC_D2 |
| Pin 160 | PE0 β General-purpose I/O or FMC_NBL0 |
| Pin 170 | PF0 β General-purpose I/O or FMC_A0 |
| Pin 180 | PG0 β General-purpose I/O or FMC_A10 |
| Pin 190 | PH2 β General-purpose I/O or FMC_SDCKE0 |
| Pin 200 | PI0 β General-purpose I/O or FMC_D16 |
| Pin 208 | VDD β Digital power supply |
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
STM32F746BET6 is suitable for 6 applications: Industrial Control Systems, Human-Machine Interface (HMI), Audio Processing, Smart Home Automation, Medical Devices, Networking and Communication.
Industrial Control Systems
The STM32F746BET6 is ideal for industrial control systems due to its high-performance Cortex-M7 core running at 216 MHz, which provides the computational power needed for complex control algorithms. The device integrates multiple timers, a 12-bit ADC with 24 channels, and communication interfaces like Ethernet and CAN, enabling precise motor control, process automation, and real-time monitoring. In a typical motor drive application, the MCU reads current and position sensors via the ADC, executes a field-oriented control (FOC) algorithm, and generates PWM signals to drive the inverter. The Ethernet MAC allows for remote monitoring and diagnostics, while the L1 cache ensures low-latency execution of time-critical code. The industrial temperature range (-40C to +85C) and robust peripheral set make it a reliable choice for factory automation equipment.
Recommended
Human-Machine Interface (HMI)
The STM32F746BET6 excels in HMI applications thanks to its integrated TFT-LCD controller and Chrom-ART Accelerator, which offload 2D graphics rendering from the CPU. This allows for smooth, responsive user interfaces with high-resolution displays. The device supports up to XGA resolution and can drive TFT panels directly, reducing the need for external graphics controllers. In a typical HMI design, the MCU renders dashboards, charts, and touch controls on an LCD, while the capacitive touch controller (e.g., STMPE811) interfaces via I2C. The Ethernet MAC enables remote updates and data visualization, and the large flash memory (512 KB) provides ample space for GUI assets. The high CPU performance ensures that even complex animations run smoothly, making it suitable for smart appliances, industrial panels, and medical devices.
Recommended
Audio Processing
The STM32F746BET6 is well-suited for audio processing applications due to its high-speed Cortex-M7 core with DSP instructions and FPU, which can handle real-time audio algorithms such as filtering, equalization, and audio codecs. The device includes multiple I2S interfaces for connecting to audio codecs and DACs, and a SAI (Serial Audio Interface) for multi-channel audio. In a typical audio application, the MCU reads audio data from an I2S microphone or codec, processes it with DSP routines, and outputs the result via I2S to a DAC or amplifier. The high clock speed (216 MHz) ensures low latency, and the large SRAM (256 KB) can buffer audio samples. The Chrom-ART Accelerator can also be used for audio visualizations on a connected display. This makes it ideal for smart speakers, audio mixers, and voice-controlled devices.
Recommended
Smart Home Automation
The STM32F746BET6 is a powerful choice for smart home automation hubs, offering a rich set of connectivity options including Ethernet, USB, and multiple UARTs/SPIs/I2Cs for interfacing with various sensors and actuators. The high-performance core can handle complex protocols like Zigbee, Z-Wave, or Thread via external transceivers, while the TFT-LCD controller enables a local touchscreen interface for user control. In a typical smart home hub, the MCU aggregates data from temperature, humidity, and motion sensors, controls lighting and HVAC systems, and communicates with cloud services via Ethernet or Wi-Fi (through an external module). The large flash memory allows for storing configuration data and logs. The device's low-power modes help reduce energy consumption in always-on applications, making it suitable for energy-efficient smart home devices.
Recommended
Medical Devices
The STM32F746BET6 is suitable for medical devices that require high performance and reliability, such as patient monitors, infusion pumps, and diagnostic equipment. The Cortex-M7 core with FPU can handle complex signal processing algorithms for ECG, EEG, or blood pressure analysis. The device includes a 12-bit ADC with 24 channels for acquiring analog sensor data, and multiple communication interfaces for transmitting data to a central monitoring system. The TFT-LCD controller can display vital signs in real-time, and the Ethernet MAC enables network connectivity for remote patient monitoring. The industrial temperature range and robust design make it reliable for continuous operation. In a patient monitor, the MCU reads ECG signals via the ADC, processes them with digital filters, and displays the waveform on an LCD, while also sending alerts via Ethernet or USB.
Recommended
Networking and Communication
The STM32F746BET6 is well-suited for networking and communication applications due to its integrated Ethernet MAC, USB 2.0 OTG, and multiple communication interfaces. The high-performance Cortex-M7 core can handle network protocol stacks like TCP/IP, and the large SRAM (256 KB) provides buffer space for network packets. In a typical application, the MCU acts as a gateway between different communication protocols, such as Ethernet to serial or USB to CAN. The device can also be used in industrial IoT gateways, where it collects data from sensors via UART/SPI/I2C and forwards it to the cloud via Ethernet or Wi-Fi (through an external module). The Chrom-ART Accelerator can be used for network status visualization on a local display. The device's rich connectivity and high performance make it ideal for routers, gateways, and protocol converters.
Recommended
Recommended Products Summary
Engineering reference data for STM32F746BET6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F746BGT6 | STM32F746BET7 | STM32F746VGT6 | GD32F750ZIT6 |
|---|---|---|---|---|---|
| Package | 208-LQFP (28x28 mm) | 208-LQFP (28x28 mm) - same | 208-LQFP (28x28 mm) - same | 100-LQFP (14x14 mm) - different | 144-LQFP (20x20 mm) - different |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice |
| Core | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 |
| Maximum Clock Frequency | 216 MHz | 216 MHz | 216 MHz | 216 MHz | 200 MHz |
| Flash Memory | 512 KB | 1 MB | 512 KB | 512 KB | 512 KB |
| SRAM | 256 KB | 320 KB | 256 KB | 256 KB | 256 KB |
| Number of I/O Pins | 168 | 168 | 168 | 82 | 114 |
| TFT-LCD Controller | Yes | Yes | Yes | Yes | Yes |
| Ethernet MAC | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C |
Key Differentiators
- Higher flash memory option (vs STM32F746BGT6)
- Extended temperature range option (vs STM32F746BET7)
- More I/O pins and larger package (vs STM32F746VGT6)
Design Notes
The STM32F746BET6 requires a clean power supply. Connect a 100nF ceramic capacitor and a 4.7uF capacitor to each VDD pin, placed as close to the pin as possible. The VDDA pin must be connected to a clean analog supply, and a 1uF capacitor should be placed between VDDA and VSSA. The VCAP pins require a 2.2uF capacitor for the internal voltage regulator. Refer to the STM32F7 hardware development application note (AN4666) for detailed power supply design guidelines.
For high-speed interfaces like Ethernet and USB, follow the layout guidelines in AN4666. Keep differential pairs (e.g., USB D+/D-) matched in length and impedance (90 ohms for USB). For the Ethernet PHY interface, use a 50-ohm controlled impedance for the TX/RX pairs. Place the crystal oscillator (HSE) close to the PH0/PH1 pins and keep the load capacitors (typically 20pF) within 5mm of the crystal. Avoid routing high-speed signals near the crystal to prevent interference.
The STM32F746BET6 in a 208-LQFP package has a thermal resistance (theta_JA) of approximately 40 C/W. At 216 MHz with all peripherals active, the power dissipation can reach 500mW, resulting in a temperature rise of 20C above ambient. Ensure adequate airflow or a thermal pad connected to a copper pour on the PCB to keep the junction temperature within the specified range. For high-temperature environments, consider the STM32F746BET7 variant with an extended temperature range.
Compliance Information
RoHS compliant per STMicroelectronics product page. Not AEC-Q100 qualified - choose STM32F746BET7 for extended temperature range, but it is not automotive qualified either.
