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STMicroelectronics STM32F446ZEH7
- Part No.:
- STM32F446ZEH7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-UFBGA
- Datasheet:
-
STM32F446ZEH7.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 144UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,796
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Product details
Overview
STM32F446ZEH7 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 CAN 2.0B interfaces - deployed in industrial motor control and audio processing systems requiring deterministic real-time response.
For engineers reviewing the STM32F446ZEH7 datasheet, STM32F446ZEH7 pinout, STM32F446ZEH7 application, or STM32F446ZEH7 equivalent, key selection criteria include its 144-pin LQFP package, 180 MHz CPU clock with ART Accelerator enabling zero-wait-state flash execution, dual USB PHY support across full-speed and high-speed modes, and integrated SAI/SPDIFRX for multi-channel digital audio I/O.
Technical Context
The STM32F446ZEH7 integrates an Arm Cortex-M4 core with floating-point unit and DSP extensions, coupled with ST's Adaptive Real-Time Accelerator (ART) that eliminates flash wait states at 180 MHz. Its memory subsystem includes 512 KB of embedded flash with ECC, 128 KB SRAM plus 4 KB backup SRAM, and flexible external memory controller supporting SDRAM, NOR/NAND, and PSRAM.
Peripherals are organized around a multi-AHB bus matrix: two independent SAI blocks support I²S/TDM/AC97 protocols; SPDIF-RX enables optical audio input; dual CAN 2.0B controllers operate concurrently; and the DCMI interface handles 8–14-bit parallel camera data up to 54 MB/s - all synchronized via dedicated audio PLL (PLLI2S) and SAI PLL (PLLSAI).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU and DSP instructions, 180 MHz max frequency (225 DMIPS @ Dhrystone 2.1) |
| Flash / RAM | 512 KB flash (ECC-enabled), 128 KB SRAM + 4 KB backup SRAM - supports zero-wait-state execution via ART Accelerator |
| ADC Performance | Three 12-bit ADCs, 2.4 MSPS each; 7.2 MSPS aggregate in triple interleaved mode with hardware oversampling |
| USB Connectivity | Dual USB controllers: OTG_FS (on-chip FS PHY) and OTG_HS (dedicated DMA + on-chip FS PHY + ULPI for HS) |
| Audio Interfaces | 2× SAI (I²S/TDM/AC97), SPDIF-RX, PLLI2S and PLLSAI for independent audio clock generation |
| Timers & Control | Up to 17 timers including 2x advanced-control (TIM1/TIM8), 2x watchdogs, SysTick, and 12x general-purpose 16-/32-bit timers |
| Package | LQFP144 (20 × 20 mm), 144-pin, 0.5 mm pitch - RoHS-compliant, industrial temperature range (–40°C to +105°C) |
Pinout & Package
LQFP144 (20 × 20 mm) package with 0.5 mm pitch, 144 leads, exposed thermal pad, and industrial-grade reliability (operating junction temperature –40°C to +125°C). Pinout validated per STMicroelectronics DS10693 Rev 11, Section 4 "Pinout and pin description".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Core and I/O supply pins (1.7–3.6 V); multiple VDD/VSS pairs ensure low-noise operation and decoupling integrity |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 114 total GPIOs; up to 111 support 90 MHz toggle rate; 112 are 5 V-tolerant - enable direct interfacing with legacy logic |
| PA11/PA12 | USB OTG FS D+/D− | Dedicated full-speed USB transceiver pins with internal pull-ups; require no external PHY for FS device/host operation |
| ULPI_D[0:7], ULPI_CLK, etc. | USB OTG HS physical layer | ULPI interface for external high-speed PHY; enables 480 Mbps USB communication without internal HS PHY |
| PC6–PC9, PD3–PD7 | DCMI data bus | 8–14-bit parallel camera interface supporting up to 54 MB/s throughput - used for real-time image capture in vision systems |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator | Enables 0-wait-state execution from flash at 180 MHz - eliminates cache misses and guarantees deterministic interrupt latency |
| Dual USB PHY Support | On-chip FS PHY for OTG_FS + dedicated OTG_HS controller with ULPI - allows concurrent full-speed and high-speed USB operation |
| Triple Interleaved ADC | Three 12-bit ADCs synchronized to sample up to 24 channels at 7.2 MSPS aggregate - ideal for multi-phase motor current sensing |
| Audio-Centric Clocking | Dedicated PLLI2S and PLLSAI generate precise, jitter-free clocks for SAI/SPDIFRX - meets Class A audio timing requirements |
| Flexible External Memory | FMC supports SDRAM, PSRAM, NOR/NAND flash - enables expansion of code/data space beyond embedded SRAM limits |
Applications
| Industrial Motor Drive | Professional Audio Mixer |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM/BLDC motors with real-time current/voltage feedback. IC Role / Device Role / Timing Role: Main system controller executing FOC algorithm, PWM generation (via TIM1/TIM8), and ADC sampling synchronization. Use Value: Triple interleaved ADC delivers 7.2 MSPS for simultaneous phase current sampling; 180 MHz CPU ensures sub-1 µs control loop latency. |
Use Scenario: Multi-channel digital audio routing, mixing, and effects processing in stage console hardware. IC Role / Device Role / Timing Role: Central audio processor managing dual SAI interfaces, SPDIF-RX input, and I²S output to DACs. Use Value: Independent PLLI2S and PLLSAI provide isolated, low-jitter clocks for input and output audio domains - meeting AES3 jitter specs. |
| Medical Imaging Front-End | Smart Building Gateway |
Use Scenario: High-speed analog signal digitization from ultrasound transducer arrays or X-ray detector modules. IC Role / Device Role / Timing Role: High-throughput data acquisition engine interfacing with ADCs and FPGA co-processors via DCMI or SPI. Use Value: DCMI supports 54 MB/s parallel video stream; flexible FMC enables local frame buffer using PSRAM - reduces host CPU load. |
Use Scenario: Protocol-agnostic building automation hub connecting BACnet MS/TP, Modbus RTU, and CAN-based HVAC sensors. IC Role / Device Role / Timing Role: Multi-protocol gateway controller running concurrent CAN 2.0B, UART-based fieldbus, and Ethernet (via external PHY). Use Value: Dual CAN controllers handle separate HVAC and lighting networks; 20 communication interfaces eliminate need for bridge ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32F429ZIT6 | Same LQFP144 package, but adds LCD-TFT controller and higher flash (2 MB); lacks SPDIF-RX and second SAI | Better suited for HMI-centric designs with embedded display; less optimal for audio-focused systems | Select when TFT-LCD interface is required and SPDIF/SAI count is secondary |
| STM32F746ZGT6 | Higher-performance Cortex-M7 (216 MHz), larger RAM (320 KB), but no SPDIF-RX and only one SAI; different pinout | Targets compute-intensive tasks (e.g., embedded ML inference); not drop-in compatible due to peripheral and pin mismatch | Choose for raw processing headroom where audio interface count is reduced and display integration is unnecessary |
Compared with STM32F429ZIT6 and STM32F746ZGT6, the STM32F446ZEH7 uniquely balances audio-specific peripherals (SPDIF-RX, dual SAI), deterministic real-time performance (ART-accelerated 180 MHz), and industrial I/O density - making it the optimal choice for cost-sensitive, audio- and motor-control–centric embedded systems without display requirements.
Availability
STM32F446ZEH7 is available at Aetrix Electronics and suitable for industrial motor drives, professional audio equipment, medical imaging front-ends, and smart building gateways requiring stable component supply across extended product lifecycles.
Supply support for STM32F446ZEH7 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 management ICs, sensors, and automotive-grade components since 1987.
The STM32F446xE series belongs to ST's high-performance Cortex-M4 MCU line, engineered specifically for real-time industrial and audio applications demanding rich analog/mixed-signal integration, deterministic USB/audio timing, and robust peripheral concurrency.
FAQ
What is the maximum operating temperature for the STM32F446ZEH7?
The STM32F446ZEH7 is rated for industrial temperature range: –40°C to +105°C ambient operating temperature. Its junction temperature limit is +125°C, validated per DS10693 Rev 11 Section 7.8 (Thermal characteristics), with θJA = 26.5°C/W for LQFP144 package under standard JEDEC PCB conditions.
Does the STM32F446ZEH7 support USB high-speed device mode natively?
No - the STM32F446ZEH7 includes a USB OTG HS controller that requires an external ULPI-compliant PHY for high-speed (480 Mbps) operation. It has an integrated full-speed PHY for OTG_FS, but HS functionality depends on external PHY connection via ULPI bus (pins ULPI_CLK, ULPI_D[0:7], etc.).
How many independent clock sources does the STM32F446ZEH7 provide for audio applications?
The device provides three dedicated clock sources for audio: PLLI2S (for SAI/I²S), PLLSAI (for SAI/SPDIFRX), and LSE (32.768 kHz for RTC and optional audio sample rate reference). These are electrically isolated and software-configurable to prevent jitter coupling between domains.
Can the STM32F446ZEH7 execute code directly from external SDRAM via the FMC?
No - the Flexible Memory Controller (FMC) supports external SDRAM for data storage only; code execution is limited to internal flash, SRAM, or CCM-SRAM. The FMC does not map external memory into the instruction fetch path per RM0390 and DS10693 specifications.
STM32F446ZEH7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 144-UFBGA
- 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:
- 114
- Program Memory Size:
- 512KB (512K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 132K 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446ZEH7 FAQ
1.How can I place an order for STM32F446ZEH7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446ZEH7 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 STM32F446ZEH7 reliable?
The price and inventory of STM32F446ZEH7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446ZEH7 is usually 5 days.
3.What payment methods are accepted for STM32F446ZEH7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446ZEH7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446ZEH7?
STM32F446ZEH7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446ZEH7 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 STM32F446ZEH7?
For technical support, including STM32F446ZEH7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446ZEH7 requirements.
6.How does Aetrix verify that STM32F446ZEH7 is sourced from the original manufacturer or authorized distributors?
All STM32F446ZEH7 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 STM32F446ZEH7 meets industry standards.
7.What is the process for return or replacement of STM32F446ZEH7?
All STM32F446ZEH7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446ZEH7, 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 STM32F446ZEH7 part is unused and in its original packaging.
Return procedure for STM32F446ZEH7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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