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STMicroelectronics STM32F446ZET7TR
- Part No.:
- STM32F446ZET7TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-LQFP
- Datasheet:
-
STM32F446ZET7TR.pdf
- Description:
- IC MCU 32BIT 512KB FLASH 144LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,085
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Product details
Overview
STM32F446ZET7TR 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 motor control and audio gateway systems.
For engineers reviewing the STM32F446ZET7TR datasheet, STM32F446ZET7TR pinout, STM32F446ZET7TR application, or STM32F446ZET7TR equivalent, key selection criteria include USB HS/FS dual PHY support, 144-pin LQFP package with 112 5 V-tolerant I/Os, ART Accelerator-enabled zero-wait-state flash execution, and integrated audio peripherals (SAI, I2S, PLLI2S) for real-time signal processing.
Technical Context
The device integrates an Adaptive Real-Time Accelerator (ART Accelerator™) enabling deterministic 0-wait-state execution from flash at 180 MHz, paired with a multi-AHB bus matrix for concurrent peripheral access. Its memory subsystem includes flexible external memory controller (FMC) supporting SDRAM, NOR/NAND, and PSRAM, plus Dual QuadSPI for high-speed serial flash expansion.
Timing architecture combines multiple clock domains: main PLL (up to 180 MHz), dedicated audio PLLs (PLLI2S, PLLSAI) for jitter-sensitive audio paths, and independent 32 kHz RTC oscillator with calibration. Debug infrastructure includes SWD/JTAG and Cortex-M4 Trace Macrocell™ for cycle-accurate profiling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M4 with FPU, 180 MHz max, 225 DMIPS - enables real-time DSP algorithms (e.g., motor FOC, audio FFT) without external coprocessor |
| Memory | 512 KB flash + 128 KB SRAM + 4 KB backup SRAM - sufficient for complex firmware with OTA update partitioning and RTC-critical data retention |
| ADC | 3× 12-bit, 2.4 MSPS each; 7.2 MSPS in triple interleaved mode - supports simultaneous sampling of motor phase currents and DC bus voltage |
| USB | Dual USB OTG: FS controller with on-chip PHY + HS controller with dedicated DMA and ULPI interface - enables host/device dual-role operation with full-speed peripheral enumeration and high-speed bulk transfers |
| I/O | 114 GPIOs, 112 5 V-tolerant, up to 90 MHz toggle - drives industrial I/O modules and interfaces directly with legacy 5 V logic without level shifters |
| Audio Interfaces | 2× SAI, 3× I2S (muxed with SPI), SPDIF-RX, PLLI2S/PLLSAI - supports multi-channel digital audio input/output (e.g., 4-in/4-out I2S + TDM over SAI) with sub-ppm clock accuracy |
| Timers | 17 timers including 2× advanced-control (TIM1/TIM8), 12× general-purpose - provides 6-channel complementary PWM with dead-time insertion for 3-phase inverter control |
Pinout & Package
LQFP144 (20 × 20 mm) package with exposed thermal pad; 144-pin square grid, 0.5 mm pitch, RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Main power supply/ground | 1.7–3.6 V core/I/O rail; separate VCAP pins require 2.2 µF ceramic capacitors for regulator stability |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 112 pins 5 V-tolerant; support multiple alternate functions (e.g., TIMx_CHy, USARTx_TX/RX, I2Cx_SCL/SDA) |
| PA11/PA12 | USB FS D+/D− | Integrated full-speed PHY; no external transceiver needed - reduces BOM cost and PCB area |
| OTG_HS_ULPI_Dx / CLK | USB HS ULPI interface | 8-bit parallel ULPI bus (D0–D7 + CLK) for external high-speed PHY - enables 480 Mbps data rates with minimal pin count |
| PC6–PC9, PD0–PD7 | DCMI data bus | 8- to 14-bit parallel camera interface (54 MB/s max) - connects directly to CMOS image sensors in machine vision edge nodes |
| PF6–PF10, PG6–PG15 | SAI1/SAI2 signals | Dual SAI blocks support TDM/I2S/AC97 protocols; each with MCLK, FS, SCK, SD lines - enables stereo audio codec interfacing and digital microphone arrays |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Eliminates flash wait states at 180 MHz, reducing instruction fetch latency by >40% vs. uncached execution - critical for deterministic interrupt response in motor control loops |
| Flexible Memory Controller (FMC) | Supports 16-bit SDRAM (up to 64 MB), NOR/NAND flash, and PSRAM - enables external frame buffer for HMI graphics or firmware storage beyond internal flash limits |
| Dual Audio PLLs (PLLI2S/PLLSAI) | Independent clock synthesis for SAI/I2S with <±10 ppm jitter - meets AES3 professional audio timing requirements without external clock generators |
| Advanced-Control Timers (TIM1/TIM8) | 6-channel complementary PWM with programmable dead-time, brake, and synchronization - implements space-vector modulation for 3-phase PMSM/BLDC inverters |
| Backup Domain | RTC with hardware calendar, 20×32-bit backup registers, and optional 4 KB backup SRAM powered by VBAT - retains time/date and critical state across full power cycles |
Applications
| Industrial Motor Control | Professional Audio Gateway |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors in HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, generating 6-channel PWM via TIM1/TIM8, sampling current/voltage via triple-interleaved ADC, and managing CAN 2.0B fieldbus communication. Use Value: Integrated ART Accelerator ensures sub-1 µs interrupt latency for PWM update; 5 V-tolerant I/Os interface directly with gate drivers and isolated current sensors. | Use Scenario: Multi-format audio bridge converting USB Audio Class 2.0 streams to I2S/TDM outputs for studio monitors and digital mixers. IC Role / Device Role / Timing Role: USB HS host endpoint processor with SAI/I2S audio interface, PLLI2S clock generator, and SPDIF-RX receiver for digital audio input synchronization. Use Value: Dual SAI blocks handle simultaneous 4-in/4-out TDM streams; dedicated USB HS DMA prevents audio buffer underruns during high-bandwidth transfers. |
| Medical Imaging Edge Node | Smart Energy Gateway |
Use Scenario: Portable ultrasound probe preprocessing raw echo data from linear array transducers before transmission to central station. IC Role / Device Role / Timing Role: Real-time signal processor using ADC oversampling, FIR filtering, and DCMI interface to capture 14-bit sensor frames at 54 MB/s. Use Value: Parallel camera interface eliminates need for external FIFO; 128 KB SRAM buffers full-frame data for on-chip beamforming computation. | Use Scenario: DIN-rail mounted energy meter aggregating Modbus RTU (RS-485), M-Bus, and PLC data while hosting secure TLS-encrypted cellular backhaul. IC Role / Device Role / Timing Role: Secure communications hub running FreeRTOS, managing dual CAN 2.0B for local bus, SDIO for eMMC logging, and USB OTG for field configuration. Use Value: FMC interface supports encrypted NAND flash for firmware rollback protection; 96-bit unique ID enables hardware-rooted device attestation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F429ZIT6 | Same Cortex-M4 core, 2 MB flash, LCD-TFT controller, no USB HS - lacks dedicated audio PLLs and SPDIF-RX | Better suited for GUI-rich HMI applications; insufficient for professional audio timing or digital receiver functions | Select when display interface is primary requirement and audio/USB HS not needed |
| STM32H743ZIT6 | Cortex-M7 core, 1 MB flash, 1 MB SRAM, dual-core capability, USB HS/FS with PHY - higher performance but no SPDIF-RX or DCMI | Targeted at AI inference at edge; lacks native digital audio receiver and parallel camera interface | Choose for compute-intensive tasks requiring double-precision FP or CMSIS-NN acceleration |
Compared with STM32F429ZIT6, STM32F446ZET7TR trades LCD-TFT support for superior audio and digital interface integration; versus STM32H743ZIT6, it offers lower power consumption and specialized peripherals for real-time signal acquisition - making it optimal for audio/motor/audio-visual edge nodes where feature alignment outweighs raw MIPS.
Availability
STM32F446ZET7TR is available at Aetrix Electronics and suitable for industrial motor control, professional audio gateways, medical imaging edge nodes, and smart energy gateways requiring stable component supply throughout product lifecycles.
Supply support for STM32F446ZET7TR 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, Switzerland, 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 - specifically optimized for motor control, audio processing, and industrial automation.
FAQ
What is the maximum operating frequency and associated DMIPS rating?
The STM32F446ZET7TR operates at up to 180 MHz with a measured 225 DMIPS (Dhrystone 2.1), achieved via the ART Accelerator enabling zero-wait-state execution from flash. This performance level supports real-time execution of complex control algorithms such as field-oriented motor control and multi-channel audio processing without external co-processors.
Does this MCU support both USB Full-Speed and High-Speed operation simultaneously?
Yes - the device integrates two independent USB controllers: a full-speed OTG controller with on-chip PHY and a high-speed OTG controller with dedicated DMA, on-chip full-speed PHY, and ULPI interface. This allows concurrent FS device enumeration (e.g., HID keyboard) and HS bulk transfers (e.g., audio streaming) without resource contention.
How many 5 V-tolerant I/O pins does the LQFP144 package provide?
The STM32F446ZET7TR in LQFP144 package supports up to 112 5 V-tolerant I/Os across its GPIO ports (PA–PG). This eliminates external level-shifting circuitry when interfacing with legacy 5 V peripherals such as RS-232 transceivers, optocouplers, or industrial digital I/O modules.
What audio-specific peripherals are integrated for professional-grade signal processing?
The MCU integrates two Serial Audio Interfaces (SAI1/SAI2), three I2S interfaces (muxed with SPI), SPDIF-RX receiver, and two dedicated audio PLLs (PLLI2S and PLLSAI). These enable low-jitter (<±10 ppm) clock generation, TDM/I2S/AC97 protocol handling, and digital audio input capture - meeting AES3 timing requirements for studio-grade audio equipment.
STM32F446ZET7TR 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:
- 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 24x12b SAR; D/A 2x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446ZET7TR FAQ
1.How can I place an order for STM32F446ZET7TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446ZET7TR 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 STM32F446ZET7TR reliable?
The price and inventory of STM32F446ZET7TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446ZET7TR is usually 5 days.
3.What payment methods are accepted for STM32F446ZET7TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446ZET7TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446ZET7TR?
STM32F446ZET7TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446ZET7TR 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 STM32F446ZET7TR?
For technical support, including STM32F446ZET7TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446ZET7TR requirements.
6.How does Aetrix verify that STM32F446ZET7TR is sourced from the original manufacturer or authorized distributors?
All STM32F446ZET7TR 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 STM32F446ZET7TR meets industry standards.
7.What is the process for return or replacement of STM32F446ZET7TR?
All STM32F446ZET7TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446ZET7TR, 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 STM32F446ZET7TR part is unused and in its original packaging.
Return procedure for STM32F446ZET7TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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