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STMicroelectronics STM32F446ZCT6TR
- Part No.:
- STM32F446ZCT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32F446ZCT6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,699
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Product details
Overview
STM32F446ZCT6TR 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 triple interleaved), two DACs, and 20 communication interfaces including dual CAN 2.0B, SAI, SPDIF-RX, and SDIO - deployed in industrial HMI, motor control gateways, and audio-enabled IoT edge nodes.
For engineers reviewing the STM32F446ZCT6TR datasheet, STM32F446ZCT6TR pinout, STM32F446ZCT6TR application, or STM32F446ZCT6TR equivalent, key selection criteria include USB HS/FS dual-role capability, 144-pin LQFP package I/O count (114 total, 112 5 V-tolerant), ART Accelerator™ for zero-wait-state flash execution, and integrated audio peripherals (SAI, SPDIF-RX, audio PLLs) enabling real-time voice processing without external co-processors.
Technical Context
The device integrates an Adaptive Real-Time Accelerator (ART Accelerator™) that enables deterministic 0-wait-state execution from flash at 180 MHz, eliminating cache misses in time-critical control loops. Its multi-AHB bus matrix supports concurrent access to flash, SRAM, and peripherals - critical for high-throughput data movement in audio streaming or camera interface (DCMI) applications.
It implements dual USB controllers: one full-speed OTG with on-chip PHY, and one high-speed/full-speed OTG with dedicated DMA and ULPI support - allowing simultaneous host/device roles across separate USB domains. The dual audio PLLs (PLLI2S and PLLSAI) provide independent, jitter-optimized clocks for SAI and SPDIF-RX, ensuring <100 ps phase noise for Class A audio fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 180 MHz max, 225 DMIPS - enables real-time DSP filtering and motor control algorithms in single-cycle precision. |
| Memory | 512 KB flash + 128 KB SRAM + 4 KB backup SRAM - sufficient for bootloader, secure firmware, and audio buffer storage without external memory. |
| ADC | 3× 12-bit, 2.4 MSPS each; 7.2 MSPS in triple interleaved mode - supports high-resolution current/voltage sampling in 3-phase motor drives. |
| USB | Dual OTG: FS controller with embedded PHY + HS controller with dedicated DMA and ULPI - enables simultaneous USB audio class device and mass-storage host operation. |
| Audio Interfaces | 2× SAI, SPDIF-RX, PLLI2S/PLLSAI - provides hardware-accelerated I²S/TDM/PCM routing and sample-rate conversion for multi-mic far-field voice capture. |
| I/O | 114 GPIOs, 112 5 V-tolerant, 90 MHz toggle rate - supports direct interfacing with legacy industrial sensors and displays without level shifters. |
| Package | LQFP144 (20 × 20 mm), T = –40 to +105 °C - suitable for convection-cooled industrial PCBs with standard reflow profiles. |
Pinout & Package
LQFP144 (20 × 20 mm, 0.5 mm pitch) with exposed thermal pad; 144 pins arranged in four 36-pin sides; RoHS-compliant, halogen-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | 1.7–3.6 V core/I/O rail; decoupling required per datasheet Section 6.3.6 - ensures stable operation under dynamic USB/SAI load transients. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 114 total GPIOs; 112 support 5 V tolerance - allows direct connection to 5 V logic sensors or displays without external buffers. |
| PA11/PA12 | USB FS D+/D− | Dedicated full-speed OTG interface with internal PHY - eliminates need for external transceiver in USB device-only designs. |
| OTG_HS_* (e.g., PB12–PB15) | USB HS ULPI interface | 8-bit ULPI bus supporting external HS PHY - enables high-bandwidth USB video/audio streaming at 480 Mbps. |
| PD0–PD7, PE0–PE7 | DCMI data bus | 8-bit parallel camera interface up to 54 MB/s - supports OV5640 and similar VGA/UXGA sensors for embedded vision. |
| PC1–PC7 | SAI1 clock/data lines | Supports master/slave I²S, PCM, and TDM modes with programmable bit clock polarity and frame sync - essential for multi-channel microphone arrays. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables zero-wait-state execution from flash at 180 MHz - eliminates instruction fetch stalls in safety-critical motor control loops. |
| Dual Audio PLLs | PLLI2S and PLLSAI provide independent, low-jitter clocks for SAI and SPDIF-RX - avoids audio artifacts during simultaneous playback/recording. |
| Flexible Memory Controller (FMC) | Supports NOR/NAND/PSRAM/SDRAM with 16-bit data bus - enables expansion of code space or frame buffer for HMI graphics. |
| QuadSPI Interface | Dual-mode QuadSPI with XIP support - allows direct execution from external flash, reducing boot time and internal flash usage. |
| Backup Domain | RTC + 20×32-bit registers + 4 KB backup SRAM powered by VBAT - retains configuration and timestamps during main power loss. |
Applications
| Industrial Motor Control Gateway | Smart Audio Edge Node |
|---|---|
Use Scenario: Central gateway managing multiple BLDC drives via CAN 2.0B, collecting sensor data, and exposing USB HID interface for configuration. IC Role / Device Role / Timing Role: Real-time scheduler and protocol bridge - executes field-oriented control (FOC) at 20 kHz while handling CAN arbitration and USB enumeration. Use Value: Dual CAN controllers enable redundant bus topology; 180 MHz core with FPU delivers 3× faster FOC computation vs. STM32F407, reducing torque ripple. | Use Scenario: Voice-controlled smart speaker with 4-mic array, local wake-word detection, and USB audio streaming to PC. IC Role / Device Role / Timing Role: Audio subsystem controller - synchronizes SAI input (mics), SPDIF-RX (reference clock), and USB audio output with sub-microsecond jitter alignment. Use Value: Integrated PLLI2S/PLLSAI eliminate external clock generators; 7.2 MSPS ADC supports oversampled PDM-to-PCM conversion for SNR > 95 dB. |
| Medical Portable Monitor | Automotive Diagnostic Tool |
Use Scenario: Battery-powered patient monitor acquiring ECG, SpO₂, and temperature with LCD display and USB data export. IC Role / Device Role / Timing Role: Multi-sensor aggregator and UI processor - manages analog front-end timing, LCD parallel interface (8080 mode), and low-power state transitions. Use Value: 12-bit ADCs with 24-channel mux and hardware oversampling achieve 16-bit effective resolution for ECG; Stop mode consumes 42 µA @ 3.3 V. | Use Scenario: Handheld OBD-II scanner reading vehicle CAN bus, displaying diagnostics on color LCD, and logging via SDIO to microSD card. IC Role / Device Role / Timing Role: Automotive protocol interpreter - handles ISO 15765-2 (CAN TP) framing, LCD refresh at 60 Hz, and SDIO 4-bit high-speed transfers. Use Value: Dual CAN controllers allow simultaneous monitoring of powertrain and body networks; SDIO interface achieves 25 MB/s write speed for raw log capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F429ZIT6 | Higher-resolution LCD-TFT controller (RGB interface), no SPDIF-RX, same 144-pin LQFP package and 180 MHz core. | Better suited for high-color-depth graphical HMIs; lacks native digital audio input for voice-centric edge devices. | Select when display performance outweighs audio interface needs; requires external codec for microphone input. |
| STM32H743ZIT6 | Cortex-M7 core (480 MHz), dual-core option, 1 MB flash, no SPDIF-RX but enhanced SAI with FIFO and DMA chaining. | Targeted at AI inference + real-time control fusion; higher power and cost, not drop-in compatible due to voltage regulator and reset timing differences. | Choose for ML-based predictive maintenance; requires PCB redesign and toolchain migration. |
Compared with STM32F429ZIT6, STM32F446ZCT6TR trades LCD-TFT capability for superior audio peripheral integration and lower active power; versus STM32H743ZIT6, it offers proven maturity, smaller footprint, and lower BOM cost for audio/motor control convergence without M7-level complexity.
Availability
STM32F446ZCT6TR is available at Aetrix Electronics and suitable for industrial motor control gateways, smart audio edge nodes, and medical portable monitors requiring stable component supply across extended product lifecycles.
Supply support for STM32F446ZCT6TR 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 automotive chips since 1987.
This part belongs to the STM32F4x6 mainstream MCUs product line, engineered for cost-sensitive, high-integration applications demanding rich analog/mixed-signal capability, USB connectivity, and real-time audio/motor control - targeting industrial automation, healthcare, and consumer audio markets.
FAQ
What is the maximum operating temperature range for STM32F446ZCT6TR?
The STM32F446ZCT6TR is rated for industrial temperature range: –40 °C to +105 °C ambient. This is validated per datasheet Section 6.3.1 and confirmed in the LQFP144 package thermal characteristics table (Section 7.4). Operation beyond +105 °C risks SRAM retention failure and flash programming instability.
Does STM32F446ZCT6TR support USB High-Speed device mode natively?
No - the USB HS peripheral requires an external ULPI PHY (e.g., SMSC USB3343) connected via the 8-bit ULPI bus (PB12–PB15, PA5, etc.). The chip includes only the HS controller logic and dedicated DMA; on-chip PHY is provided only for Full-Speed mode (PA11/PA12).
How many independent clock sources does STM32F446ZCT6TR integrate?
It integrates five independent clock sources: HSE (4–26 MHz crystal), HSI (16 MHz RC, ±1%), LSE (32.768 kHz crystal), LSI (37 kHz RC), and PLL (with three input sources: HSE/HSI/PLL source). All are documented in Section 3.13 and electrical specs Table 39–42.
Can the QuadSPI interface execute code directly from external flash (XIP)?
Yes - the dual-mode QuadSPI supports eXecute-In-Place (XIP) from compatible Octal or Quad SPI flash devices (e.g., Micron MT25QL), as specified in Section 3.10 and functional description Table 2. This reduces internal flash pressure and enables secure firmware updates via external memory.
STM32F446ZCT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-LQFP
- Series:
- STM32F4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M4F
- Core Size:
- 32-Bit
- 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:
- 114
- 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 24x12b SAR; D/A 2x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446ZCT6TR FAQ
1.How can I place an order for STM32F446ZCT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446ZCT6TR 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 STM32F446ZCT6TR reliable?
The price and inventory of STM32F446ZCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446ZCT6TR is usually 5 days.
3.What payment methods are accepted for STM32F446ZCT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446ZCT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446ZCT6TR?
STM32F446ZCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446ZCT6TR 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 STM32F446ZCT6TR?
For technical support, including STM32F446ZCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446ZCT6TR requirements.
6.How does Aetrix verify that STM32F446ZCT6TR is sourced from the original manufacturer or authorized distributors?
All STM32F446ZCT6TR 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 STM32F446ZCT6TR meets industry standards.
7.What is the process for return or replacement of STM32F446ZCT6TR?
All STM32F446ZCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446ZCT6TR, 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 STM32F446ZCT6TR part is unused and in its original packaging.
Return procedure for STM32F446ZCT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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