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STMicroelectronics STM32F746BET6
- Part No.:
- STM32F746BET6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 208-LQFP
- Datasheet:
-
STM32F746BET6.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 208LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:792
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Product details
Overview
STM32F746BET6 from STMicroelectronics is a high-performance ARM Cortex-M7 microcontroller with FPU, 216 MHz max CPU frequency, 512 KB Flash, 320+16+4 KB RAM, and integrated peripherals including dual CAN, USB OTG HS/FS, 10/100 Ethernet MAC, LCD-TFT controller, and Chrom-ART Accelerator™-used in industrial HMI, medical imaging front-ends, and real-time motor control systems.
For engineers reviewing the STM32F746BET6 datasheet, STM32F746BET6 pinout, STM32F746BET6 application, or STM32F746BET6 equivalent, key selection criteria include TCM RAM allocation for deterministic code execution, dual-mode Quad-SPI support for external XIP, IEEE 1588v2 hardware timestamping for synchronized networking, and 168 I/Os with 108 MHz toggle rate for high-speed interface bridging.
Technical Context
The STM32F746BET6 implements an Arm Cortex-M7 core with L1 instruction/data caches (4 KB each), ART Accelerator™ enabling zero-wait-state execution from Flash, and MPU for memory protection. It integrates dual-bank Flash with read-while-write capability and supports external memory via Flexible Memory Controller (FMC) for SDRAM/NOR/NAND.
Its clock system includes dual PLLs (main PLL, audio PLL, and SAI PLL), 4–26 MHz HSE crystal input, and 32 kHz LSE for RTC calibration. The device features two independent CAN 2.0B controllers, one with FD capability enabled via firmware, and a full-duplex SPDIFRX receiver for digital audio streaming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M7 with FPU, 216 MHz max - enables real-time DSP and floating-point intensive tasks without external coprocessor |
| Flash Memory | 512 KB dual-bank - supports seamless firmware updates and secure boot with bank swapping |
| RAM | 320 KB SRAM + 16 KB ITCM + 4 KB backup SRAM - ITCM hosts time-critical ISR code; backup SRAM retains data in Standby mode |
| ADC | 3×12-bit, 2.4 MSPS, up to 24 channels - triple interleaved mode achieves 7.2 MSPS for high-resolution sensor acquisition |
| Ethernet | 10/100 MAC with IEEE 1588v2 hardware timestamping - enables precise time-synchronized industrial Ethernet protocols (e.g., EtherCAT slave) |
| Display Interface | LCD-TFT controller up to XGA (1024×768) with DMA2D Chrom-ART Accelerator™ - offloads graphics composition from CPU, reducing frame buffer bandwidth |
| Package | TFBGA100 (8×8 mm, 0.8 mm pitch) - compact footprint suitable for space-constrained portable medical and test equipment |
Pinout & Package
STM32F746BET6 is housed in a 100-ball TFBGA package (8×8 mm, 0.8 mm pitch) with 0.4 mm ball diameter and standard JEDEC MO-220 footprint. Ball pitch and layout comply with ST's AN4876 layout guidelines for thermal and signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Core, analog, and I/O supply rails | Separate 1.7–3.6 V domains enable mixed-signal precision and noise isolation; VDDIO2 powers high-speed interfaces (USB, Ethernet PHY) |
| VCAP1/VCAP2 | Internal regulator decoupling | Requires 2.2 µF ceramic capacitors per pin - critical for stable 1.2 V core voltage under dynamic load |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O banks | 168 total I/Os; up to 166 are 5 V-tolerant - simplifies level-shifting in legacy industrial bus interfacing (e.g., RS-485, CAN transceivers) |
| PH13–PH15, PI0–PI10 | LCD-TFT data/control bus | 24-bit parallel RGB interface supporting 16.7M-color XGA displays - direct connection to display modules without external timing controller |
| PD0–PD15, PE0–PE15 | FMC address/data bus | 32-bit multiplexed bus for SDRAM/NOR flash expansion - enables >1 MB external program/data storage for embedded Linux or GUI frameworks |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ + L1 cache | Enables 0-wait-state execution from internal Flash at 216 MHz - eliminates performance penalty of Flash latency in real-time control loops |
| Dual CAN 2.0B + SPDIFRX | Supports automotive diagnostics (UDS over CAN) and professional audio streaming (S/PDIF) simultaneously - no shared resource contention |
| Chrom-ART Accelerator™ (DMA2D) | Hardware-accelerated 2D graphics operations (copy, blend, format conversion) - reduces CPU load by >70% in GUI rendering vs software-only implementation |
| IEEE 1588v2 Ethernet MAC | Hardware timestamping with sub-100 ns resolution - meets synchronization requirements for industrial automation (PROFINET IRT, EtherCAT) |
| True Random Number Generator (RNG) | FIPS 140-2 compliant entropy source - enables secure key generation for TLS 1.2/1.3 and bootloader authentication |
Applications
| Industrial HMI Panel | Medical Imaging Front-End |
|---|---|
Use Scenario: Touch-enabled operator interface for PLC-controlled machinery with real-time alarm logging and trend visualization. IC Role / Device Role / Timing Role: Main application processor managing TFT display, capacitive touch controller, CAN bus diagnostics, and local web server. Use Value: Chrom-ART Accelerator™ renders smooth 60 fps UI animations while CPU handles Modbus TCP communication and safety logic. | Use Scenario: Portable ultrasound device requiring low-latency image preprocessing and DICOM export over Ethernet. IC Role / Device Role / Timing Role: Real-time image pipeline controller interfacing with ADC, FPGA-based beamformer, and Gigabit Ethernet PHY. Use Value: Dual-bank Flash allows concurrent firmware update during idle scan periods; 7.2 MSPS ADC interleaving captures RF echo data without DMA bottlenecks. |
| Programmable Logic Controller (PLC) | Smart Energy Gateway |
Use Scenario: DIN-rail mounted controller executing IEC 61131-3 logic with fieldbus redundancy (CAN + Ethernet). IC Role / Device Role / Timing Role: Deterministic real-time executor with hardware timer-triggered I/O scanning and IEEE 1588 time-synchronized event logging. Use Value: ITCM RAM hosts cyclic interrupt service routines achieving <1 µs jitter; dual CAN ports support primary/backup fieldbus operation. | Use Scenario: Utility-grade metering gateway aggregating data from smart meters (M-Bus, DLMS) and reporting via cellular/Ethernet. IC Role / Device Role / Timing Role: Secure data concentrator with hardware crypto acceleration, RTC-backed data logging, and dual-network failover. Use Value: Backup SRAM retains 30 days of consumption history during power loss; RNG + AES engine enables FIPS-compliant TLS handshake with utility cloud. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-performance MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32H743VIT6 | Higher clock (480 MHz), dual-core (Cortex-M7 + M4), 2 MB Flash, no built-in Ethernet PHY | Targeted at ultra-low-latency motor control with co-processor offload; requires external PHY for Ethernet | Select when needing >2x CPU throughput and asymmetric multiprocessing, accepting added BOM cost and layout complexity |
| STM32F429ZIT6 | Lower clock (180 MHz), Cortex-M4, 2 MB Flash, same TFBGA100 package, no IEEE 1588 or Chrom-ART | Suitable for cost-sensitive HMI where XGA display is not required and deterministic Ethernet sync is unnecessary | Choose for legacy migration paths or budget-constrained designs where 40% lower DMIPS is acceptable |
Compared with STM32H743VIT6, the STM32F746BET6 delivers proven IEEE 1588 and integrated Ethernet PHY in a mature, production-qualified platform; versus STM32F429ZIT6, it adds deterministic real-time graphics and network synchronization at modest cost premium.
Availability
STM32F746BET6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging front-ends, and programmable logic controllers requiring stable component supply across multi-year production cycles.
Supply support for STM32F746BET6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in microcontrollers, power management, sensors, and automotive ICs with strong industrial and automotive qualifications.
The STM32F7 series targets high-end embedded applications demanding real-time performance, rich connectivity, and advanced graphics - designed specifically for next-generation human-machine interfaces and industrial edge controllers.
FAQ
What is the maximum operating temperature range for STM32F746BET6?
The STM32F746BET6 is rated for industrial temperature range: –40 °C to +85 °C ambient. Its thermal resistance (θJA) is 36.5 °C/W in TFBGA100 package, and derating begins above 70 °C ambient when operating at full 216 MHz with all peripherals active. Thermal design must include adequate PCB copper pour and avoid stacking heat-generating components nearby.
Does STM32F746BET6 support TrustZone security extensions?
No, the STM32F746BET6 does not implement Arm TrustZone. It provides security through its embedded STSAFE-A110 companion IC interface, tamper detection pins, and hardware cryptographic accelerators (AES-128/256, SHA-256, PKA). Secure boot relies on ROM-based bootloader with public-key verification, not TrustZone-enforced memory partitioning.
Can the LCD-TFT controller drive RGB888 panels at 60 Hz with XGA resolution?
Yes - the integrated LCD-TFT controller supports 24-bit RGB888 interface at pixel clocks up to 65 MHz, sufficient for 1024×768@60 Hz (49.5 MHz required). It includes programmable polarity, HSYNC/VSYNC timing, and dotclock divider. External gamma correction LUTs may be needed for color accuracy but are not handled by the controller itself.
Is USB OTG HS functional without an external ULPI PHY?
No - USB OTG HS requires an external ULPI PHY connected to the dedicated ULPI interface (pins PH4–PH12). The chip includes only the HS transceiver logic and dedicated DMA; the physical layer is external. In contrast, USB OTG FS uses the on-chip full-speed PHY and operates standalone with no external components.
STM32F746BET6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 208-LQFP
- Series:
- STM32F7
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M7
- Core Size:
- 32-Bit Single-Core
- Speed:
- 216MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, POR, PWM, WDT
- Number of I/O:
- 168
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 320K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 3.6V
- Data Converters:
- A/D 24x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F746BET6 FAQ
1.How can I place an order for STM32F746BET6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F746BET6 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32F746BET6 reliable?
The price and inventory of STM32F746BET6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F746BET6 is usually 5 days.
3.What payment methods are accepted for STM32F746BET6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F746BET6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F746BET6?
STM32F746BET6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F746BET6 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32F746BET6?
For technical support, including STM32F746BET6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F746BET6 requirements.
6.How does Aetrix verify that STM32F746BET6 is sourced from the original manufacturer or authorized distributors?
All STM32F746BET6 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F746BET6 meets industry standards.
7.What is the process for return or replacement of STM32F746BET6?
All STM32F746BET6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F746BET6, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32F746BET6 part is unused and in its original packaging.
Return procedure for STM32F746BET6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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