STMicroelectronics STM32F4 series STM32F446ZEH6, 32-Bit Single-Core ARM Cortex-M4, 180MHz, 512KB Flash, 128K x 8 RAM, 144-UFBGA, -40°C ~ 85°C.
| Parameter | Value |
|---|---|
| Series | STM32F4 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.7V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 180MHz |
| Package | Tray |
| RAM size | 128K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 114 |
| Core processor | ARM® Cortex®-M4 |
| Case | 144-UFBGA |
| Data converters | A/D 24x12b; D/A 2x12b |
| Program memory size | 512KB (512K x 8) |
The STM32F446ZEH6: The 114 I/O lines and connectivity set — CAN, USB OTG, SDIO, SPDIF-Rx, SAI, multiple SPI/I²C/UART — let it serve as a central controller in industrial drives, motor-control boards, or audio-effect pedals without external PHYs or bridges.
The 128 KB SRAM supports double-buffered DMA transfers and a moderate RTOS heap. If your application streams audio or runs a TCP/IP stack, budget the heap against the 128 KB ceiling.
The STM32F446ZEH6 comes in a 144-UFBGA package (7x7 mm), while the STM32F446ZET6 uses an LQFP144. The BGA variant saves board area but requires different soldering and inspection processes. All other core specs — 180 MHz Cortex-M4, 512 KB Flash, 128 KB RAM — are identical.
A lower-power alternative within ST's portfolio is the STM32L151CBU6A, a Cortex-M3 running at 32 MHz with 37 I/O and a 1.8 V supply. It trades the 180 MHz DSP performance and rich connectivity of the STM32F446ZEH6 for ultra-low-power operation in battery-powered designs.