The STM32F401 Black Pill Development Board is an enhanced version of the popular Blue Pill, which is based on the F103. This newer model has a more powerful Core-M4F-based ARM CPU. The DFU bootloader is supported by both the F401 and F411 processors. The Cortex®-M4 core includes a single-precision floating point unit (FPU) that supports all Arm single-precision data-processing instructions and data types. It also includes a complete set of DSP instructions and a memory protection unit (MPU) to improve application security. The STM32F401 includes high-speed embedded memories as well as a wide range of enhanced I/O and peripherals that are connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix.
The STM32F401 incorporates high-speed embedded memories (up to 256 Kbytes of Flash memory, up to 64kB of SRAM), and a wide range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
Specifications
| Product Attribute | Attribute Value |
| Series: | STM32F401RC |
| Core: | ARM Cortex M4 |
| Program Memory Size: | 256 kB |
| Data Bus Width: | 32 bit |
| ADC Resolution: | 12 bit |
| Maximum Clock Frequency: | 84 MHz |
| Number of I/Os: | 50 I/O |
| Data RAM Size: | 64 kB |
| Supply Voltage – Min: | 1.7 V |
| Supply Voltage – Max: | 3.6 V |
| Minimum Operating Temperature: | – 40 C |
| Maximum Operating Temperature: | + 85 C |
| Data RAM Type: | SRAM |
| Interface Type: | I2C, I2S, SDIO, SPI, USART, USB |
| UART | 3 |
| I2C | 3 |
| SPI | 3 |
| USB | OTG FS |
| Number of ADC Channels: | 16 Channel |
| Number of Timers/Counters: | 8 Timer |
| Program Memory Type: | Flash |