STMicroelectronics 180MHz Cortex-M4 · DSP/FPU · 512KB Flash · 128KB SRAM · LQFP-64 · Drone flight controller with USB HS OTG
| Parameter | Value |
|---|---|
| Core | ARM Cortex-M4F (DSP, FPU) |
| CPU Speed | 180 MHz |
| Performance | 225 DMIPS / 608 CoreMark |
| Flash | 512 KB (single bank) |
| SRAM | 128 KB (+ 64KB CCM) |
| Package | LQFP-64 (10×10mm) |
| Supply Voltage | 1.8V – 3.6V |
| Operating Temp | -40°C to +85°C |
| Parameter | Value |
|---|---|
| VDD Range | 1.8V – 3.6V |
| Run Current @ 180MHz | ~100 mA |
| Stop Mode | ~4.5 µA |
| ADC | 3× 12-bit, up to 2.4 MSPS |
| DAC | 2× 12-bit |
| I/O Voltage | 3.3V (5V tolerant) |
| Interface | Count |
|---|---|
| UART/USART | 6× |
| SPI | 4× (up to 45 Mbps) |
| I²C | 3× |
| CAN | 2× CAN 2.0B |
| USB | 1× USB 2.0 HS OTG (with PHY) |
| SDIO | 1× |
| SAI | 2× (Serial Audio Interface) |
| Timers | 17× (up to 180 MHz) |
| GPIO | 51 I/O |
| Parameter | Value |
|---|---|
| Part Number | STM32F446RET6 |
| Package | LQFP-64 |
| Temp Grade | Industrial |
| RoHS | Compliant |
| MOQ | 1 pcs |
| Lead Time | In Stock |
The STM32F446RET6 sits at the top of the F4 series with 180 MHz — the highest CPU speed in the STM32F4 family. Compared to the popular STM32F405RGT6 (168 MHz, 1MB Flash), it offers higher clock speed, USB HS OTG with on-chip PHY, and Serial Audio Interface (SAI) — useful for audio telemetry or advanced I/O expansion.
The 512KB flash is smaller than the F405's 1MB, making it most suitable for compact flight controller firmware implementations or projects that use an external SPI flash (W25Q32JV) for blackbox logging. Pin-compatible with F405 in the LQFP-64 package for drop-in board redesigns.
| Model | Speed | Flash | USB OTG |
|---|---|---|---|
| STM32F446RET6 | 180 MHz | 512 KB | HS + FS |
| STM32F405RGT6 | 168 MHz | 1 MB | FS only |
| STM32F427VIT6 | 180 MHz | 2 MB | FS only |