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STMicroelectronics STM32F446VCT7
- Part No.:
- STM32F446VCT7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32F446VCT7.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:748
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Product details
Overview
STM32F446VCT7 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz (225 DMIPS), featuring 512 KB flash, 128+4 KB RAM, dual USB OTG (FS/HS), three 12-bit ADCs (7.2 MSPS in triple interleaved mode), and two 12-bit DACs - deployed in industrial motor control systems requiring real-time analog acquisition and high-speed communication.
For engineers reviewing the STM32F446VCT7 datasheet, STM32F446VCT7 pinout, STM32F446VCT7 application, or STM32F446VCT7 equivalent, key selection criteria include its 100-pin LQFP package, 112 5 V-tolerant I/Os, ART Accelerator™ enabling zero-wait-state flash execution, dual CAN 2.0B interfaces, and dedicated USB HS DMA channel for deterministic host/device throughput.
Technical Context
The STM32F446VCT7 integrates an Adaptive Real-Time Accelerator (ART Accelerator™) that eliminates flash wait states at 180 MHz, coupled with a multi-AHB bus matrix supporting concurrent access to flash, SRAM, and peripherals. Its memory subsystem includes flexible external memory controller (FMC) for SDRAM/NOR/NAND and dual-mode QuadSPI for high-bandwidth serial flash.
Timing architecture combines three independent PLLs - main PLL for CPU/system clocks, PLLI2S for audio-class I2S/SAI synchronization, and PLLSAI for SAI clock generation - enabling simultaneous high-fidelity audio streaming and real-time control loop execution without clock contention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 180 MHz max frequency, 225 DMIPS performance - enables floating-point-intensive motor algorithms and real-time signal processing. |
| Flash / RAM | 512 KB embedded flash + 128 KB SRAM + 4 KB backup SRAM - supports large firmware images, real-time data buffering, and RTC-critical state retention during power loss. |
| ADC Performance | Three 12-bit ADCs, 2.4 MSPS each; 7.2 MSPS in triple interleaved mode - delivers synchronized multi-channel sampling for PMSM FOC current sensing. |
| USB Interfaces | USB 2.0 FS OTG + USB 2.0 HS OTG with dedicated DMA and on-chip PHY - allows concurrent device/host operation with guaranteed bandwidth for firmware updates and data logging. |
| Communication Peripherals | 2× CAN 2.0B, 4× USART, 4× SPI (45 Mbps), 2× SAI, SPDIF-RX - supports industrial fieldbus integration, audio playback, and digital microphone arrays. |
| I/O Capability | 114 GPIOs, 112 5 V-tolerant, up to 90 MHz toggle rate - interfaces directly with legacy 5 V logic, encoders, and optocoupled isolation without level shifters. |
| Low-Power Modes | Sleep/Stop/Standby with VBAT-powered RTC and 20×32-bit backup registers - maintains timekeeping and critical state during mains dropout in smart grid meters. |
Pinout & Package
LQFP100 (14 × 14 mm) package with exposed thermal pad; 100 pins including 87 user I/Os, 5 power/ground, 4 debug, and 4 supply decoupling terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Main power supply/ground | 1.7–3.6 V core/I/O rail; requires separate 100 nF + 4.7 µF decoupling per VDD pair to stabilize ART Accelerator™ operation. |
| VCAP_1/VCAP_2 | Internal regulator bypass | Connect 2.2 µF ceramic capacitors to ground; mandatory for stable 180 MHz operation and low-noise analog subsystems. |
| PA13/PA14 | SWD debug interface | Serial Wire Debug (SWDIO/SWCLK); no JTAG required - reduces PCB footprint while retaining full trace and breakpoint capability. |
| PA11/PA12 | USB FS D+/D− | Dedicated full-speed USB transceiver pins; internal pull-up enables device enumeration without external components. |
| PA15/PB3/PB4 | JTAG/SWD alternate | Configurable as SWD or JTAG; PB3/PB4 default to JTDI/JTDO but remappable to SWO for trace output. |
| PC10/PC11 | USB HS ULPI | High-speed USB physical layer interface (ULPI); connects to external USB HS PHY for 480 Mbps host/device operation. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables zero-wait-state execution from flash at 180 MHz - eliminates instruction fetch stalls and ensures deterministic interrupt latency for servo control loops. |
| Dual USB OTG | Independent FS and HS controllers with dedicated DMA - permits simultaneous USB device (firmware update) and host (USB flash drive data import) operation without CPU overhead. |
| Triple-interleaved ADC | 7.2 MSPS aggregate sampling across three 12-bit ADCs - captures synchronized phase currents and DC-link voltage in single-shunt PMSM drives. |
| Flexible Memory Controller (FMC) | Supports SDRAM, PSRAM, NOR/NAND flash - enables external frame buffer for HMI displays or firmware-over-the-air (FOTA) staging area. |
| Audio Subsystem | 2× SAI + PLLI2S + SPDIF-RX - implements full-duplex I2S audio playback/recording with jitter-free clocking for VoIP gateways and industrial intercoms. |
Applications
| Industrial Motor Control | Smart Grid Metering |
|---|---|
Use Scenario: Field-oriented control (FOC) of 3-phase PMSM motors in HVAC compressors and pump drives. IC Role / Device Role / Timing Role: Real-time execution of Clarke/Park transforms, PWM generation (TIM1/TIM8), and synchronized ADC sampling via TRGO triggers. Use Value: Triple-interleaved ADC achieves 7.2 MSPS with sub-microsecond phase alignment - critical for accurate torque ripple suppression. | Use Scenario: Polyphase energy meter with harmonic analysis, tamper detection, and DLMS/COSEM protocol stack. IC Role / Device Role / Timing Role: High-precision metrology engine interfacing with sigma-delta ADCs, RTC-backed secure logging, and dual-CAN for utility communication. Use Value: 20×32-bit backup registers + 4 KB backup SRAM retain billing data and calibration coefficients during brownout events. |
| Industrial HMI Gateway | Audio-Enabled IoT Edge Node |
Use Scenario: Touchscreen HMI with local PLC logic, Modbus TCP gateway, and SDIO-connected display controller. IC Role / Device Role / Timing Role: Application processor running FreeRTOS, managing Ethernet MAC, SDIO display interface, and FMC-connected SDRAM framebuffer. Use Value: FMC supports 16-bit SDRAM up to 90 MHz - enables 800×480 RGB565 display refresh at 60 Hz with zero CPU intervention. | Use Scenario: Voice-controlled industrial sensor node with far-field microphone array and encrypted audio streaming. IC Role / Device Role / Timing Role: Audio preprocessing hub using SAI/I2S interfaces, SPDIF-RX for digital input, and AES engine for payload encryption. Use Value: PLLI2S provides <10 ps RMS jitter for 192 kHz/24-bit I2S - meets AES3 professional audio timing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | No USB HS, no QuadSPI, 1 MB flash but only 192 KB RAM, no ART Accelerator™ - lower DMIPS/MHz efficiency at 168 MHz. | Lacks dedicated HS USB DMA and audio PLLs - unsuitable for simultaneous high-bandwidth data transfer and real-time audio processing. | Select when cost-sensitive designs require basic USB FS + Ethernet but omit advanced audio/motor control features. |
| STM32H743VIT6 | Cortex-M7 @ 480 MHz, 2 MB flash/1 MB RAM, dual-core option, no USB HS PHY - requires external HS PHY and lacks integrated VBUS sensing. | Higher compute density but increased BOM cost and layout complexity - better for AI inference edge nodes than deterministic motor control. | Select when >300 DMIPS and dual-core RTOS partitioning are required, accepting added design effort for USB HS implementation. |
Compared with STM32F407VGT6, the STM32F446VCT7 delivers 6% higher core frequency, integrated USB HS PHY, and ART Accelerator™ for consistent flash performance - making it superior for mixed-signal industrial gateways. Against STM32H743VIT6, it trades raw MIPS for lower power, simpler USB integration, and proven FOC peripheral coherency.
Availability
STM32F446VCT7 is available at Aetrix Electronics and suitable for industrial motor control, smart grid metering, HMI gateways, and audio-enabled IoT edge nodes requiring stable component supply through 2026 and beyond.
Supply support for STM32F446VCT7 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 demanding DSP capability, rich connectivity, and robust analog integration - optimized for motor control, digital power conversion, and human-machine interface systems.
FAQ
What is the maximum operating temperature range for STM32F446VCT7?
The STM32F446VCT7 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per JEDEC JESD22-A108 and confirmed in Section 6.3.1 of DS10693 Rev 11, with derating applied above 70 °C for sustained 180 MHz operation and full peripheral activation.
Does STM32F446VCT7 support hardware crypto acceleration?
No, the STM32F446VCT7 does not integrate hardware cryptographic accelerators (AES, SHA, PKA). It relies on software libraries (STM32Cube HAL + Mbed TLS) for encryption. For hardware crypto, ST recommends STM32L4+, STM32H7, or STM32WB series devices with dedicated crypto processors.
Can the internal 32 kHz RC oscillator calibrate the RTC without an external crystal?
Yes - the internal 32 kHz RC oscillator includes factory calibration and runtime trimming via the RTC_CALIBR register. Its typical accuracy is ±500 ppm over –40 °C to +85 °C, sufficient for non-precision timekeeping in industrial logging applications where external LSE crystal omission reduces BOM count.
How many independent PWM channels can be generated simultaneously on STM32F446VCT7?
The STM32F446VCT7 supports up to 36 independent PWM outputs: TIM1/TIM8 (8 channels each), TIM2–TIM5/TIM9–TIM14 (up to 4 channels each), totaling 36 OC/OCN channels. All timers operate synchronously at up to 180 MHz, enabling precise multi-phase motor drive waveforms with dead-time insertion and fault protection.
STM32F446VCT7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32F4
- Packaging:
- Tray
- 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:
- 256KB (256K 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446VCT7 FAQ
1.How can I place an order for STM32F446VCT7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446VCT7 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 STM32F446VCT7 reliable?
The price and inventory of STM32F446VCT7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446VCT7 is usually 5 days.
3.What payment methods are accepted for STM32F446VCT7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446VCT7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446VCT7?
STM32F446VCT7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446VCT7 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 STM32F446VCT7?
For technical support, including STM32F446VCT7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446VCT7 requirements.
6.How does Aetrix verify that STM32F446VCT7 is sourced from the original manufacturer or authorized distributors?
All STM32F446VCT7 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 STM32F446VCT7 meets industry standards.
7.What is the process for return or replacement of STM32F446VCT7?
All STM32F446VCT7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446VCT7, 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 STM32F446VCT7 part is unused and in its original packaging.
Return procedure for STM32F446VCT7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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