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STMicroelectronics STM32F446VET6TR
- Part No.:
- STM32F446VET6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32F446VET6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:6,780
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Product details
Overview
STM32F446VET6TR from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 180 MHz max CPU frequency, 512 KB flash, 128+4 KB RAM, and dual USB OTG (FS/HS) support. It integrates three 12-bit ADCs (2.4 MSPS), two 12-bit DACs, two CAN 2.0B interfaces, and up to 20 communication peripherals - deployed in industrial motor control, audio processing, and USB-connected embedded gateways.
For engineers reviewing the STM32F446VET6TR datasheet, STM32F446VET6TR pinout, STM32F446VET6TR application, or STM32F446VET6TR equivalent, key selection criteria include USB HS/FS dual-role capability, triple-interleaved ADC throughput (7.2 MSPS), ART Accelerator-enabled zero-wait-state flash execution, and 114 I/Os with 90 MHz toggle rate and 5 V tolerance on 112 pins.
Technical Context
The device implements a tightly coupled Cortex-M4 core with FPU and MPU, supported by ST's Adaptive Real-Time Accelerator (ART) for deterministic flash execution at 180 MHz. Its memory subsystem includes dual-bank flash with ECC, flexible external memory controller (FMC) supporting SDRAM/NOR/NAND, and Dual QuadSPI for XIP-capable serial flash expansion.
Peripherals are organized across multiple AHB/APB buses with dedicated DMA streams: two SAI interfaces for multi-channel audio I/O, SPDIF-RX for digital audio input, DCMI for parallel camera capture (54 MB/s), and bxCAN controllers with time-triggered communication support - all synchronized via a multi-source clock tree with four PLLs (main, PLLI2S, PLLSAI, SSCG).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and MPU; enables DSP-intensive real-time control (e.g., field-oriented motor control) and secure partitioning. |
| Max Clock Frequency | 180 MHz; delivers 225 DMIPS (1.25 DMIPS/MHz), sufficient for concurrent USB HS + audio + motor control tasks. |
| Flash / RAM | 512 KB flash with ART Accelerator; 128 KB SRAM + 4 KB backup SRAM; supports firmware updates without external memory. |
| ADC Performance | 3× 12-bit ADCs, 2.4 MSPS each; 7.2 MSPS in triple interleaved mode - meets high-speed sensor sampling in PLC analog I/O modules. |
| USB Interfaces | Dual USB controllers: OTG_FS (on-chip PHY) + OTG_HS (dedicated DMA + ULPI support); enables simultaneous host/device roles with full-speed and high-speed connectivity. |
| I/O Capability | Up to 114 I/Os; 112 pins 5 V-tolerant, 111 pins rated for 90 MHz toggle - suitable for direct interfacing with legacy industrial logic and displays. |
| Communication Peripherals | 2× CAN 2.0B, 4× I2C, 4× USART/2× UART, 4× SPI/3× I2S, 2× SAI, SDIO, CEC, SPDIF-RX - covers factory automation, audio gateway, and smart metering stacks. |
Pinout & Package
LQFP100 (14 × 14 mm) package with 100-pin surface-mount footprint, thermal pad exposed on underside for enhanced heat dissipation in continuous operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground rails | Separate analog/digital domains ensure <1 LSB ADC noise floor; VDDA must be ≥ VDD for accurate conversion. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O banks | 114 total GPIOs grouped into 10 ports; most support EXTI, remappable AF functions, and 5 V tolerance (112 pins). |
| PC13–PC15 | RTC oscillator inputs | Support 32.768 kHz crystal; PC14/PC15 are dedicated low-power pins with built-in load capacitors (12.5 pF). |
| PA11/PA12 | USB FS D+/D− | Full-speed USB transceiver pins; require 1.5 kΩ pull-up on D+ for device enumeration; no external PHY needed. |
| ULPI_D0–ULPI_D7, ULPI_CLK, etc. | USB HS physical layer interface | 8-bit ULPI bus for external high-speed PHY; enables 480 Mbps USB operation while freeing internal resources. |
| PH0/PH1 | HSE oscillator inputs | Accept 4–26 MHz crystal; essential for USB HS clock derivation and precise system timing. |
| BOOT0 | Boot mode selection | High at reset forces boot from system memory (DFU mode); used for field firmware recovery without debugger. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables zero-wait-state execution from 512 KB flash at 180 MHz - eliminates cache misses in deterministic control loops. |
| Dual USB OTG | Independent FS and HS controllers with dedicated DMA; allows simultaneous USB device (e.g., HID) and host (e.g., flash drive) operation. |
| Triple-interleaved ADC | 7.2 MSPS aggregate sampling across three 12-bit ADCs - captures synchronized multi-sensor data for predictive maintenance analytics. |
| Flexible Memory Controller (FMC) | 16-bit bus supporting SDRAM, PSRAM, NOR/NAND; enables external frame buffer for LCD-TFT or HMI graphics rendering. |
| Audio Subsystem | 2× SAI + SPDIF-RX + PLLI2S/PLLSAI; supports TDM/I2S master/slave, 32-bit stereo, and sample-rate flexibility (8–192 kHz). |
Applications
| Industrial Motor Control | USB Audio Gateway |
|---|---|
Use Scenario: Closed-loop PMSM/BLDC drive with current sensing, encoder feedback, and safety monitoring. IC Role / Device Role / Timing Role: Real-time computation engine executing FOC algorithm, PWM generation (TIM1/TIM8), ADC synchronization, and CAN-based status reporting. Use Value: 180 MHz Cortex-M4+FPU + triple ADC interleaving ensures sub-µs current loop timing; 2× CAN interfaces enable dual-network redundancy. | Use Scenario: USB-powered audio bridge converting USB audio class 2.0 streams to I2S/TDM output for DACs or amplifiers. IC Role / Device Role / Timing Role: USB HS endpoint processor, SAI transmitter, and PLLI2S clock generator with jitter <50 ps RMS. Use Value: Dual SAI + SPDIF-RX + audio PLLs support multi-format input (USB, optical, coaxial) and simultaneous stereo/quad output. |
| Smart Energy Metering | Factory Automation HMI |
Use Scenario: DIN-rail mounted meter with polyphase energy calculation, tamper detection, and DLMS/COSEM over RS-485/PLC. IC Role / Device Role / Timing Role: High-precision metrology co-processor interfacing with external ΣΔ ADCs, managing secure crypto, RTC calendar, and dual-comms stack. Use Value: 128 KB SRAM hosts full DLMS stack; backup SRAM retains billing data during power loss; 32 kHz RTC with ±1 ppm calibration enables tariff scheduling. | Use Scenario: Touch-enabled panel PC front-end for PLC visualization, with local graphics rendering and Modbus TCP gateway. IC Role / Device Role / Timing Role: Graphics controller driving 800×480 RGB LCD via 8080 parallel interface, handling touch interrupt, and bridging Ethernet to RS-485. Use Value: LCD parallel interface + FMC-driven SDRAM frame buffer enables smooth GUI; 114 GPIOs support keypad, LED indicators, and isolated I/O expansion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | Same Cortex-M4 core but no USB HS, lower ADC speed (2.4 MSPS single), no SAI/SPDIF, 1 MB flash, no QuadSPI. | Lacks audio interface suite and high-speed USB; suited for general-purpose control without multimedia I/O. | Select when USB HS, SAI, or SPDIF-RX are unnecessary and larger flash is preferred. |
| STM32H743VIT6 | Cortex-M7 core, 480 MHz, dual-core option, 2 MB flash, 1 MB RAM, USB HS/FS, advanced graphics (LTDC), no SPDIF-RX. | Higher performance and memory, but higher power and cost; lacks SPDIF-RX and has different peripheral mapping. | Select for demanding HMI or AI-edge inference where M7 throughput and LTDC outweigh SPDIF-RX omission. |
Compared with STM32F407VGT6, the STM32F446VET6TR adds USB HS, SAI, SPDIF-RX, and QuadSPI - critical for audio gateways and high-bandwidth sensor fusion. Versus STM32H743VIT6, it trades raw M7 performance for lower cost, lower power, and dedicated audio peripherals - ideal for cost-sensitive, audio-centric edge nodes.
Availability
STM32F446VET6TR is available at Aetrix Electronics and suitable for industrial motor control, USB audio gateways, smart energy metering, and factory automation HMI requiring stable component supply through 2026 and beyond.
Supply support for STM32F446VET6TR 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32F4 series targets high-performance real-time embedded applications requiring DSP capability, rich connectivity, and robust peripheral integration - optimized for motor control, audio processing, and USB-connected IoT edge nodes.
FAQ
What is the maximum operating temperature range for STM32F446VET6TR?
The STM32F446VET6TR is specified for industrial temperature range: –40 °C to +85 °C ambient. Thermal derating begins above 70 °C ambient when operating at 180 MHz with all peripherals active; junction temperature must remain below 125 °C per datasheet Section 6.3.1.
Does STM32F446VET6TR support external SDRAM, and what is the maximum clock rate?
Yes, the Flexible Memory Controller (FMC) supports external SDRAM with 16-bit data bus. It operates up to 90 MHz clock frequency (half of 180 MHz APB3 clock), enabling up to 144 MB/s bandwidth for LCD frame buffers or real-time data logging.
How many independent PWM channels can be generated simultaneously on this MCU?
Up to 36 independent PWM outputs are possible: twelve 16-bit timers (TIM2–TIM5, TIM9–TIM14) and two 32-bit timers (TIM1/TIM8), each supporting up to four OC/PWM channels. TIM1 and TIM8 also provide complementary dead-time configurable outputs for 3-phase inverter control.
Is the STM32F446VET6TR pin-compatible with other STM32F446 variants?
Yes - all STM32F446xx LQFP100-packaged variants (e.g., STM32F446RET6, STM32F446ZET6) share identical pinout and ball mapping per datasheet Table 10. Flash/RAM size differences do not affect I/O assignment or peripheral routing on this package.
STM32F446VET6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32F4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 180MHz
- Connectivity:
- CANbus, EBI/EMI, I2C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LVD, POR, PWM, WDT
- Number of I/O:
- 81
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446VET6TR FAQ
1.How can I place an order for STM32F446VET6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446VET6TR 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 STM32F446VET6TR reliable?
The price and inventory of STM32F446VET6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446VET6TR is usually 5 days.
3.What payment methods are accepted for STM32F446VET6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446VET6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446VET6TR?
STM32F446VET6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446VET6TR 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 STM32F446VET6TR?
For technical support, including STM32F446VET6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446VET6TR requirements.
6.How does Aetrix verify that STM32F446VET6TR is sourced from the original manufacturer or authorized distributors?
All STM32F446VET6TR 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 STM32F446VET6TR meets industry standards.
7.What is the process for return or replacement of STM32F446VET6TR?
All STM32F446VET6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446VET6TR, 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 STM32F446VET6TR part is unused and in its original packaging.
Return procedure for STM32F446VET6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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