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STMicroelectronics STM32F446ZEJ6TR
- Part No.:
- STM32F446ZEJ6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-UFBGA
- Datasheet:
-
STM32F446ZEJ6TR.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 144UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,868
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Product details
Overview
STM32F446ZEJ6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz, 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 signal processing and multi-interface connectivity.
For engineers reviewing the STM32F446ZEJ6TR datasheet, STM32F446ZEJ6TR pinout, STM32F446ZEJ6TR application, or STM32F446ZEJ6TR equivalent, key selection criteria include USB HS/FS dual PHY support, 114 GPIOs with 90 MHz toggle rate and 5 V tolerance, ART Accelerator-enabled zero-wait-state flash execution, and integrated SPDIFRX/SAI/DCMI for audio/video edge devices.
Technical Context
The device integrates an Adaptive Real-Time Accelerator (ART) enabling deterministic 0-wait-state execution from flash at 180 MHz, alongside 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-speed serial flash.
Peripherals are architected for concurrent real-time I/O: dual CAN 2.0B controllers, four USARTs (11.25 Mbit/s) with LIN/IrDA/ISO7816, two SAI interfaces for stereo audio, and a parallel DCMI interface (54 MB/s) with hardware JPEG acceleration - all synchronized via a centralized RCC with multiple PLLs (main, PLLI2S, PLLSAI).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, delivering 225 DMIPS @ 180 MHz - enables floating-point math and FFT-based control loops without external coprocessor. |
| Memory | 512 KB embedded flash (128-bit wide, ART-accelerated), 128 KB SRAM + 4 KB backup SRAM - supports large firmware images and real-time data buffering with RTC retention. |
| ADC/DAC | Three 12-bit ADCs (2.4 MSPS each, 7.2 MSPS interleaved), two 12-bit DACs - meets servo feedback resolution and analog waveform generation requirements in closed-loop systems. |
| Connectivity | Dual USB OTG (FS + HS with dedicated DMA and ULPI), 2× CAN 2.0B, 4× SPI (45 Mbit/s), 2× SAI, SPDIFRX, DCMI - enables simultaneous host/device USB, fieldbus communication, and HD audio/video capture. |
| Timers & I/O | Up to 17 timers including two advanced-control (TIM1/TIM8), 114 GPIOs (111 @ 90 MHz, 112 5 V-tolerant) - supports PWM-driven motor drives, encoder counting, and mixed-voltage system interfacing. |
| Power Management | 1.7–3.6 V supply, Sleep/Stop/Standby modes, VBAT-powered RTC with 20×32-bit backup registers - ensures sub-second timekeeping and state retention during brownout or main power loss. |
Pinout & Package
LQFP144 (20 × 20 mm) package with 144 leads; RoHS-compliant, moisture sensitivity level 3, rated for industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Main power/ground rails | 12 dedicated VDD pins (including VDDA for analog, VDDUSB for USB PHY) ensure low-noise operation across digital, analog, and high-speed interface domains. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O banks | 114 total GPIOs grouped into 11 ports (A–K), each with configurable pull-up/down, alternate function mapping, and interrupt capability - supports multiplexed peripheral routing. |
| PA9/PA10, PB14/PB15 | USB OTG FS D+/D− / USB OTG HS ULPI | Dedicated full-speed differential pair and 8-bit ULPI bus enable concurrent USB device/host operation without software arbitration overhead. |
| PC0–PC3, PD0–PD7 | DCMI data bus (D0–D15) | 16-bit parallel camera interface with HSYNC/VSYNC/PCLK timing signals - captures raw Bayer or YUV video at up to 54 MB/s for machine vision preprocessing. |
| PF0–PF15, PG0–PG15 | FMC address/data bus | External memory controller interface supporting 16-bit SDRAM, PSRAM, NOR flash - extends code/data space beyond on-chip limits for GUI or firmware update storage. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Eliminates flash wait states at 180 MHz, enabling deterministic real-time response for time-critical ISR execution without RAM shadowing. |
| Dual USB OTG PHY | On-chip full-speed PHY + external ULPI-capable high-speed PHY - reduces BOM count and PCB area while supporting simultaneous USB host/device roles. |
| Triple-interleaved ADC | 7.2 MSPS aggregate sampling rate across three 12-bit ADCs with hardware synchronization - captures multi-channel motor phase currents with <100 ns inter-channel skew. |
| Flexible Clock System | Four independent PLLs (main, PLLI2S, PLLSAI, USB) with fine-grained fractional dividers - allows independent clock domain tuning for audio, USB, and CPU without jitter coupling. |
| Backup Domain | VBAT-supplied RTC with calendar, 20×32-bit backup registers, and optional 4 KB backup SRAM - retains critical configuration and timestamp data during main power removal. |
Applications
| Industrial Motor Control | Audio Processing Gateway |
|---|---|
Use Scenario: Closed-loop PMSM/BLDC motor drive with field-oriented control (FOC), current sensing, and thermal monitoring. IC Role / Device Role / Timing Role: Main controller executing FOC algorithm, synchronizing PWM outputs (TIM1/TIM8), sampling ADCs at 20 kHz, and communicating via CAN bus. Use Value: Triple-interleaved ADC enables simultaneous phase current sampling; 180 MHz core handles complex Clarke/Park transforms within 1 µs latency budget. | Use Scenario: Multi-format audio gateway bridging USB audio class, S/PDIF input, and I2S output to DACs or codecs. IC Role / Device Role / Timing Role: Audio hub managing sample-rate conversion, format translation, and real-time mixing using SAI/SPDIFRX/USB OTG HS. Use Value: Dual SAI interfaces support independent TX/RX streams; PLLI2S and PLLSAI provide jitter-free 44.1/48/96 kHz audio clocks with <50 ps RMS jitter. |
| Smart Camera Edge Node | Human-Machine Interface (HMI) |
Use Scenario: Low-latency vision node capturing VGA/720p video via parallel DCMI, performing edge inference, and streaming over USB or Ethernet. IC Role / Device Role / Timing Role: Vision processor handling DCMI frame capture, DMA-to-SRAM transfer, and neural network inference using CMSIS-NN on Cortex-M4+FPU. Use Value: 54 MB/s DCMI bandwidth sustains 30 fps VGA capture; 512 KB flash stores lightweight CNN model; ART accelerator ensures consistent inference timing. | Use Scenario: Touch-enabled industrial display with graphics rendering, button feedback, and serial communication to PLCs. IC Role / Device Role / Timing Role: HMI controller driving 8080-mode LCD via FSMC, scanning capacitive touch via ADC, and exchanging data via UART/CAN. Use Value: Parallel LCD interface achieves >20 fps GUI refresh; 114 GPIOs support resistive/capacitive touch matrix and LED/button arrays without external expanders. |
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 SPDIFRX, same 512 KB flash but only 256 KB RAM | Better suited for high-end graphical HMIs; lacks audio receiver capability for consumer audio gateways | Select when TFT display driving dominates over audio/video capture requirements |
| STM32H743ZIT6 | Cortex-M7 core (480 MHz), dual-core option, 1 MB flash/1 MB RAM, no DCMI, adds Ethernet MAC and crypto accelerators | Targeted at high-throughput networking or AI inference; lacks parallel camera interface and SPDIFRX for legacy AV systems | Choose for applications needing >2× CPU performance or Ethernet connectivity, accepting higher cost and power |
Compared with STM32F429ZIT6, STM32F446ZEJ6TR offers superior audio interface integration (SPDIFRX/SAI) and lower-power Stop mode operation, while STM32H743ZIT6 trades DCMI and analog audio peripherals for raw compute throughput and security features - making STM32F446ZEJ6TR optimal for balanced real-time audio-video-motor control edge nodes.
Availability
STM32F446ZEJ6TR is available at Aetrix Electronics and suitable for industrial motor control, audio processing gateways, smart camera edge nodes, and human-machine interface applications requiring stable component supply across extended product lifecycles.
Supply support for STM32F446ZEJ6TR 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, sensors, and automotive ICs with strong industrial and consumer market presence.
The STM32F4 series targets high-performance real-time embedded applications demanding DSP capability, rich connectivity, and analog integration - specifically optimized for motor control, audio processing, and industrial automation where deterministic timing and multi-peripheral concurrency are critical.
FAQ
What is the maximum operating frequency and how is it achieved?
The STM32F446ZEJ6TR achieves 180 MHz maximum CPU frequency using its internal main PLL with HSE (4–26 MHz) or HSI (16 MHz) as source, combined with the ART Accelerator that eliminates flash wait states. This enables deterministic instruction fetch and execution without RAM caching, verified per DS10693 Rev 11 Section 3.2.
Does this MCU support USB High-Speed device mode without an external PHY?
No - USB HS device mode requires an external ULPI PHY; the MCU provides only the ULPI interface and dedicated DMA. However, USB FS device mode uses the integrated on-chip PHY, eliminating external components for basic USB communication per Section 3.33 of the datasheet.
How many ADC channels can be used simultaneously in triple interleaved mode?
In triple interleaved mode, all 24 ADC channels (8 per ADC unit) are accessible concurrently, with synchronized sampling across ADC1/2/3. The aggregate 7.2 MSPS rate is achieved by time-interleaving conversions, maintaining <100 ns inter-channel skew as specified in Section 6.3.21.
What packaging and temperature grade does the 'J6TR' suffix indicate?
The 'J6TR' suffix denotes LQFP144 (20 × 20 mm) package, tape-and-reel packaging, and industrial temperature grade (–40 °C to +85 °C), confirmed in ST's ordering information table (Section 8) and package drawings (Section 7.4) of DS10693 Rev 11.
STM32F446ZEJ6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-UFBGA
- 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:
- 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; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446ZEJ6TR FAQ
1.How can I place an order for STM32F446ZEJ6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446ZEJ6TR 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 STM32F446ZEJ6TR reliable?
The price and inventory of STM32F446ZEJ6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446ZEJ6TR is usually 5 days.
3.What payment methods are accepted for STM32F446ZEJ6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446ZEJ6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446ZEJ6TR?
STM32F446ZEJ6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446ZEJ6TR 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 STM32F446ZEJ6TR?
For technical support, including STM32F446ZEJ6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446ZEJ6TR requirements.
6.How does Aetrix verify that STM32F446ZEJ6TR is sourced from the original manufacturer or authorized distributors?
All STM32F446ZEJ6TR 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 STM32F446ZEJ6TR meets industry standards.
7.What is the process for return or replacement of STM32F446ZEJ6TR?
All STM32F446ZEJ6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446ZEJ6TR, 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 STM32F446ZEJ6TR part is unused and in its original packaging.
Return procedure for STM32F446ZEJ6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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