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STMicroelectronics STM32F446RCT6TR
- Part No.:
- STM32F446RCT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32F446RCT6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,837
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Product details
Overview
STM32F446RCT6TR 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. It targets high-performance embedded control in industrial HMI, motor drives, and audio-enabled IoT gateways.
For engineers reviewing the STM32F446RCT6TR datasheet, STM32F446RCT6TR pinout, STM32F446RCT6TR application, or STM32F446RCT6TR equivalent, key selection factors include its 180 MHz real-time execution via ART Accelerator, 112 5 V-tolerant I/Os, dual CAN 2.0B interfaces, and integrated QuadSPI for external memory expansion.
Technical Context
The device integrates an Adaptive Real-Time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz, paired with a Memory Protection Unit (MPU) for secure task isolation. Its multi-AHB bus matrix supports concurrent access to flash, SRAM, and peripherals without contention.
It features dual USB controllers - one full-speed OTG with on-chip PHY, another high-speed/full-speed OTG with dedicated DMA and ULPI support - plus dual SAI and SPDIF-RX for synchronized multi-channel audio processing in real time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions; enables floating-point math and signal processing in real-time control loops. |
| Max Clock Frequency | 180 MHz with ART Accelerator; delivers 225 DMIPS and deterministic interrupt latency for hard real-time tasks. |
| Flash / RAM | 512 KB flash (with ECC), 128 KB SRAM + 4 KB backup SRAM; supports firmware updates and data logging with retention during standby. |
| Analog Peripherals | Three 12-bit ADCs (2.4 MSPS each, 7.2 MSPS interleaved), two 12-bit DACs; suitable for closed-loop motor control and audio waveform generation. |
| Communication Interfaces | 2× CAN 2.0B, 4× USART, 4× SPI (45 Mbps), 2× SAI, SPDIF-Rx, SDIO, CEC; enables robust industrial networking and multimedia I/O. |
| USB Support | Dual USB OTG: FS controller with on-chip PHY + HS/FS controller with dedicated DMA and ULPI; allows simultaneous host/device roles and high-bandwidth peripheral attachment. |
| Package & Pins | LQFP64 (10 × 10 mm), 51 I/Os with 5 V tolerance; fits compact industrial PCBs while maintaining compatibility with legacy STM32F4 layouts. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced with exposed pad; RoHS-compliant, rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Core and I/O domain supply (1.7–3.6 V); decoupling required per datasheet layout guidelines for stable 180 MHz operation. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/O | Up to 51 5 V-tolerant GPIOs; configurable as EXTI sources, timer channels, or alternate function peripherals including USB, CAN, and SAI. |
| PA11/PA12 | USB FS DP/DM | Dedicated full-speed USB differential pair; internal PHY eliminates need for external transceiver in FS-only designs. |
| PA9/PA10 | USART1 TX/RX | Default debug/console interface; supports LIN, IrDA, and modem control for field service and diagnostics. |
| PD0/PD1 | OSC_IN/OSC_OUT | Connects to 4–26 MHz crystal; provides precise clock source for USB, RTC, and system timing with ±50 ppm stability. |
| PC13 | RTC oscillator input | Drives 32.768 kHz LSE crystal for hardware calendar and subsecond-accurate wake-up from Stop/Standby modes. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables 0-wait-state execution from flash at 180 MHz, eliminating cache misses and ensuring deterministic code timing for safety-critical loops. |
| Dual USB OTG Controllers | One FS-only with integrated PHY, one HS/FS with ULPI and dedicated DMA - supports simultaneous device/host roles and high-throughput data streaming. |
| Triple Interleaved ADC | 7.2 MSPS aggregate sampling across three 12-bit ADCs; enables synchronized current/voltage sensing in 3-phase motor control without external sequencers. |
| Flexible External Memory Interface | FMC supports NOR/NAND/PSRAM/SDRAM up to 16-bit bus width; allows offloading GUI assets or firmware images to external memory in HMI applications. |
| Audio-Capable Peripherals | Dual SAI, SPDIF-Rx, and audio PLL (PLLI2S); supports I²S/TDM/PCM protocols for multi-microphone arrays or speaker amplification with <1 µs inter-channel skew. |
Applications
| Industrial Motor Control | Smart HMI Gateway |
|---|---|
Use Scenario: Closed-loop control of BLDC/PMSM motors in HVAC compressors and factory automation drives. IC Role / Device Role / Timing Role: Real-time execution engine managing PWM generation, current sensing (via triple ADC), position feedback, and field-oriented control (FOC) algorithms. Use Value: 180 MHz CPU + ART Accelerator ensures sub-µs loop timing; dual CAN interfaces enable J1939 or CANopen network integration with PLCs and sensors. |
Use Scenario: Edge gateway aggregating Modbus RTU, BACnet MS/TP, and BLE sensor data for building management dashboards. IC Role / Device Role / Timing Role: Protocol translation hub with USB OTG host (for flash drives), SDIO (for Wi-Fi/BLE modules), and multiple UARTs for legacy fieldbus bridging. Use Value: 512 KB flash stores multiple protocol stacks; 112 5 V-tolerant I/Os simplify interfacing with RS-485 transceivers and optocoupled inputs. |
| Audio-Enabled IoT Node | Medical Diagnostic Interface |
Use Scenario: Portable ultrasound or ECG device requiring low-latency analog acquisition and local waveform rendering. IC Role / Device Role / Timing Role: Signal acquisition processor capturing analog inputs via 12-bit ADCs, performing FIR filtering, and driving LCD via 8080 parallel interface. Use Value: Triple ADC interleaving achieves 7.2 MSPS for high-fidelity sampling; dual SAI supports stereo audio playback and microphone array beamforming. |
Use Scenario: Patient monitor front-end acquiring ECG, SpO₂, and temperature with local alarm triggering and USB data export. IC Role / Device Role / Timing Role: Safety-aware controller using MPU to isolate critical monitoring tasks from UI firmware; RTC with VBAT backup maintains time during power loss. Use Value: 4 KB backup SRAM retains patient session data; 32-bit unique ID enables traceability and regulatory compliance (IEC 62304 Class B). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F407VGT6 | Lower max frequency (168 MHz), no QuadSPI, single USB OTG FS only, 1 MB flash but only 192 KB RAM. | Lacks HS USB, SAI, and SPDIF-Rx; unsuitable for audio streaming or high-bandwidth peripheral attachment. | Select when cost-sensitive industrial control requires proven maturity over advanced audio/connectivity features. |
| STM32H743VIT6 | Higher performance (480 MHz Cortex-M7), dual-core option, 2 MB flash, 1 MB RAM, but larger LQFP100 package and higher power consumption. | Overqualified for many F446 use cases; requires more complex power sequencing and thermal management. | Choose only when AI inference, dual-core RTOS partitioning, or >1 MB code size justifies migration and board redesign. |
Compared with STM32F407VGT6, the STM32F446RCT6TR adds HS USB, SAI, and QuadSPI at identical LQFP64 footprint - enabling richer connectivity without layout change; versus STM32H743VIT6, it delivers optimal balance of performance, peripheral set, and power efficiency in space-constrained industrial designs.
Availability
STM32F446RCT6TR is available at Aetrix Electronics and suitable for industrial motor control, smart HMI gateways, audio-enabled IoT nodes, and medical diagnostic interfaces requiring stable component supply through 2026 and beyond.
Supply support for STM32F446RCT6TR 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, and automotive ICs with strong industrial and IoT focus.
The STM32F446xC/E series belongs to ST's high-performance Cortex-M4 portfolio, designed specifically for real-time embedded applications demanding rich analog integration, advanced connectivity, and deterministic execution - especially where USB HS, audio, and motor control coexist.
FAQ
What is the maximum operating temperature range for STM32F446RCT6TR?
The STM32F446RCT6TR is specified for industrial temperature range: –40°C to +85°C ambient. Its thermal resistance (θJA) is 44.5°C/W in LQFP64 package, and derating begins above 85°C case temperature. No extended temperature grade (–40°C to +105°C) is offered for this specific part number.
Does STM32F446RCT6TR support external SDRAM via FMC?
Yes - the Flexible Memory Controller (FMC) supports SDRAM/LPSDR SDRAM with 16-bit data bus, compatible with standard IS42S16400J and MT48LC4M32B2 chips. Configuration requires precise timing setup per datasheet Section 3.9 and AN4861 application note.
Can the ART Accelerator be disabled, and what is the impact on flash execution?
Yes, ART Accelerator can be disabled via SYSCFG register. When disabled, flash access incurs wait states above 30 MHz - e.g., at 180 MHz, up to five wait states apply, reducing effective throughput by ~40% versus zero-wait-state ART-enabled operation.
Is the STM32F446RCT6TR pin-compatible with other STM32F446 variants in LQFP64?
Yes - all STM32F446xR parts (e.g., STM32F446RET6, STM32F446RCT6TR) share identical LQFP64 pinout and electrical characteristics. Differences are limited to flash size (512 KB vs. 256 KB) and RAM configuration, both software-configurable and footprint-compatible.
STM32F446RCT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-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:
- 50
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446RCT6TR FAQ
1.How can I place an order for STM32F446RCT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446RCT6TR 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 STM32F446RCT6TR reliable?
The price and inventory of STM32F446RCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446RCT6TR is usually 5 days.
3.What payment methods are accepted for STM32F446RCT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446RCT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446RCT6TR?
STM32F446RCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446RCT6TR 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 STM32F446RCT6TR?
For technical support, including STM32F446RCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446RCT6TR requirements.
6.How does Aetrix verify that STM32F446RCT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F446RCT6TR 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 STM32F446RCT6TR meets industry standards.
7.What is the process for return or replacement of STM32F446RCT6TR?
All STM32F446RCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446RCT6TR, 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 STM32F446RCT6TR part is unused and in its original packaging.
Return procedure for STM32F446RCT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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