My Inquiry
My Account
STMicroelectronics STM32F446ZEJ7
- Part No.:
- STM32F446ZEJ7
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 144-UFBGA
- Datasheet:
-
STM32F446ZEJ7.pdf
- Description:
- IC MCU 32BIT 512KB FLSH 144UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STM32F446ZEJ7 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.
For engineers reviewing the STM32F446ZEJ7 datasheet, STM32F446ZEJ7 pinout, STM32F446ZEJ7 application, or STM32F446ZEJ7 equivalent, key selection considerations include its 144-pin LQFP package, ART Accelerator™ enabling zero-wait-state flash execution, dual QuadSPI support, SAI/SPDIFRX audio interfaces, and VBAT-powered RTC with 20×32-bit backup registers.
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) that eliminates flash wait states 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-mode QuadSPI for high-speed serial flash.
Timing architecture features three independent PLLs: main PLL (up to 180 MHz), PLLI2S for audio-class clocking, and PLLSAI for SAI synchronization - enabling simultaneous high-fidelity audio streaming and real-time control loop execution without resource contention.
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 servo drive timing. |
| Memory | 512 KB flash (0-wait-state @ 180 MHz), 128 KB SRAM + 4 KB backup SRAM; supports firmware updates and data logging without external memory. |
| Analog Peripherals | Three 12-bit ADCs (2.4 MSPS each, 7.2 MSPS interleaved), two 12-bit DACs; suitable for multi-axis current/voltage sensing and analog feedback generation. |
| Communication Interfaces | 2× CAN 2.0B, 4× USART/UART, 4× I²C, 4× SPI/I²S, 2× SAI, SPDIF-RX, SDIO, CEC, USB OTG FS/HS; enables full-stack industrial connectivity including fieldbus bridging. |
| Package & Pin Count | LQFP144 (20 × 20 mm); provides 114 GPIOs with 112 5 V-tolerant pins and dedicated camera/DCMI interface (8–14-bit parallel, 54 MB/s). |
| Power Management | 1.7–3.6 V supply; Sleep/Stop/Standby modes with VBAT RTC; typical Run-mode current ≤120 mA @ 180 MHz (VDD = 3.3 V). |
Pinout & Package
LQFP144 (20 × 20 mm) package with exposed thermal pad; 144-pin square grid, 0.5 mm pitch, RoHS-compliant, rated for industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDUSB | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and USB PHY (VDDUSB); enable noise isolation for precision ADC/DAC operation. |
| VSS, VSSA, VSSUSB | Ground returns | Dedicated ground planes per domain reduce coupling between high-speed digital, analog, and USB signaling paths. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 114 total GPIOs; 112 pins 5 V-tolerant, supporting legacy 5 V logic interfacing without level shifters. |
| PC13–PC15 | RTC oscillator pins | Connect 32.768 kHz crystal for hardware calendar and subsecond-accurate timekeeping with calibration support. |
| PH0–PH1 | HSE oscillator pins | Support 4–26 MHz external crystal for precise system clock generation and USB HS timing compliance. |
| PA9/PA10, PB14/PB15 | USB OTG FS/HS D+/D− | Dedicated differential pairs with on-chip full-speed PHY and ULPI interface for HS PHY; eliminate external transceiver in cost-sensitive designs. |
| PD3–PD12 | DCMI data bus (D0–D7) | 8-bit parallel camera interface capable of 54 MB/s throughput; used for machine vision preprocessing in edge AI nodes. |
Key Features
| Feature | Design Value |
|---|---|
| ART Accelerator™ | Enables zero-wait-state execution from flash at 180 MHz - eliminates cache misses and guarantees deterministic instruction fetch timing for hard real-time tasks. |
| Dual USB OTG controllers | Independent FS and HS controllers with dedicated DMA and on-chip PHYs; allows simultaneous host/device roles and seamless USB-C device enumeration. |
| Triple-interleaved ADC | 7.2 MSPS aggregate sampling rate across three 12-bit ADCs - supports synchronized current/voltage/temperature acquisition in PMSM motor drives. |
| Flexible Memory Controller (FMC) | 16-bit data bus supporting SDRAM, PSRAM, NOR/NAND; enables external frame buffer for TFT-LCD displays or large lookup tables in industrial HMI. |
| Audio subsystem | 2× SAI, SPDIF-RX, PLLI2S, and audio-class I²S - delivers low-jitter, multi-channel digital audio I/O for VoIP gateways and professional audio mixers. |
Applications
| Industrial Motor Control | Professional Audio Processing |
|---|---|
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors in CNC spindles and robotic joints. IC Role / Device Role / Timing Role: Real-time computation engine managing PWM generation, ADC sampling, and position estimation at 20 kHz update rate. Use Value: Triple-interleaved ADCs capture phase currents synchronously; ART Accelerator ensures jitter-free 180 MHz execution for fast PI loop convergence. | Use Scenario: Multi-channel digital audio mixer with SPDIF input, SAI-based I²S output, and real-time effects processing. IC Role / Device Role / Timing Role: Audio hub coordinating sample-rate conversion, channel routing, and FIR filtering via DSP instructions. Use Value: Dual SAI peripherals and PLLI2S provide independent clock domains for input/output streams, eliminating sample-drop artifacts. |
| USB-C Industrial Gateway | Smart HMI with LCD & Touch |
Use Scenario: Protocol-agnostic edge gateway connecting Modbus RTU devices to cloud via USB-C host-to-host tunneling. IC Role / Device Role / Timing Role: Dual-role USB OTG controller acting as both host (to attach USB modems) and device (for firmware updates). Use Value: Dedicated USB HS/FS PHYs and ULPI support enable plug-and-play interoperability without external transceivers or clock trees. | Use Scenario: Human-machine interface with 480×272 RGB TFT display, capacitive touch, and local data logging. IC Role / Device Role / Timing Role: Display controller driving parallel LCD interface while managing touch interrupts and flash-based configuration storage. Use Value: Flexible memory controller supports external SDRAM for display frame buffer; 512 KB internal flash stores GUI assets and firmware. |
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 SPDIFRX, SAI, and dual CAN - unsuitable for audio-centric or dual-bus industrial networking. | Select when cost sensitivity outweighs need for audio peripherals and external memory expansion. |
| STM32H743ZIT6 | Cortex-M7 core (480 MHz), dual-core option, larger memories (2 MB flash/1 MB RAM), but no SPDIFRX and higher power consumption. | Better for AI inference or high-throughput data aggregation; overqualified for deterministic motor control where M4 latency matters more than raw speed. | Choose for compute-intensive edge analytics requiring Cortex-M7 DSP/Neon, not for real-time control with tight jitter budgets. |
Compared with STM32F407VGT6, the STM32F446ZEJ7 adds critical audio and dual-CAN capabilities with lower power and smaller footprint; versus STM32H743ZIT6, it offers superior real-time determinism and lower BOM cost for mixed-signal industrial edge nodes.
Availability
STM32F446ZEJ7 is available at Aetrix Electronics and suitable for industrial motor control, professional audio equipment, USB-C protocol gateways, and smart HMI systems requiring stable component supply across extended product lifecycles.
Supply support for STM32F446ZEJ7 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, specializing in microcontrollers, power management, sensors, and automotive ICs.
The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich analog integration, and industrial-grade reliability - optimized for motor control, audio, and connectivity-intensive edge devices.
FAQ
What is the maximum operating temperature range for STM32F446ZEJ7?
The STM32F446ZEJ7 is qualified for industrial temperature range: –40 °C to +85 °C. This rating applies across all supply voltages (1.7–3.6 V) and functional modes, including full-speed USB OTG HS operation and 180 MHz CPU execution, as verified in DS10693 Rev 11 Section 6.3.1.
Does STM32F446ZEJ7 support external SDRAM, and what interface does it use?
Yes - it supports external SDRAM via the Flexible Memory Controller (FMC) with 16-bit data bus, address lines A0–A12, and control signals (NE, NWE, NOE, etc.). The FMC implements standard SDRAM command sequences and refresh timing per JEDEC JESD79 specification, documented in Section 3.9 and Table 6.3.26 of DS10693 Rev 11.
How many independent clock sources does STM32F446ZEJ7 integrate on-die?
It integrates four internal clock sources: 16 MHz factory-trimmed RC (±1% accuracy), 32 kHz RC (calibrated), 32 kHz oscillator for RTC, and LSI (37 kHz). Combined with external HSE (4–26 MHz) and LSE (32.768 kHz), this provides seven total clock sources - enabling robust failover, low-power RTC operation, and multi-domain clock tree design.
Is the STM32F446ZEJ7 pin-compatible with other STM32F446x variants in LQFP144 package?
Yes - all STM32F446x devices in LQFP144 (e.g., STM32F446RE, STM32F446VE) share identical pinout and electrical characteristics per Table 10 (pin descriptions) and Table 11 (alternate function mapping) in DS10693 Rev 11. Differences are limited to flash/RAM size and peripheral enablement - allowing hardware reuse across performance tiers.
STM32F446ZEJ7 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:
- 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 ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32F446ZEJ7 FAQ
1.How can I place an order for STM32F446ZEJ7 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32F446ZEJ7 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 STM32F446ZEJ7 reliable?
The price and inventory of STM32F446ZEJ7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F446ZEJ7 is usually 5 days.
3.What payment methods are accepted for STM32F446ZEJ7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F446ZEJ7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32F446ZEJ7?
STM32F446ZEJ7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32F446ZEJ7 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 STM32F446ZEJ7?
For technical support, including STM32F446ZEJ7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F446ZEJ7 requirements.
6.How does Aetrix verify that STM32F446ZEJ7 is sourced from the original manufacturer or authorized distributors?
All STM32F446ZEJ7 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 STM32F446ZEJ7 meets industry standards.
7.What is the process for return or replacement of STM32F446ZEJ7?
All STM32F446ZEJ7 units undergo pre-shipment inspection (PSI). If there is an issue with STM32F446ZEJ7, 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 STM32F446ZEJ7 part is unused and in its original packaging.
Return procedure for STM32F446ZEJ7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32F446ZEJ7 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
