The STM32F401XB/STM32F401XC devices are based on the high-performance Arm Cortex -M4 32-bit RISC core operating at a frequency of up to 84 MHz.

The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all Arm single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances the application security.  The STM32F401xB/STM32F401xC incorporates high-speed embedded memories (up to 256 Kbytes of Flash memory, up to 64 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses, and a 32-bit multi-AHB bus matrix.

Applications: 

1. Motor drive and application control
2. Medical equipment
3. Industrial applications: PLC, inverters, circuit breakers
4. Printers, and scanners
5. Alarm systems, video intercom, and HVAC
6. Home audio appliances
7. Mobile phone sensor hub

Features: 

1. A simple architecture, easy to learn and program
2. Ultra-low-power, energy-efficient operation
3. Excellent code density
4. Deterministic, high-performance interrupt handling
5. Upward compatibility with Cortex-M processor family
6. Platform security robustness, with integrated Memory Protection Unit (MPU)

Specifications: 

1. Processor:Arm 32-bit Cortex-M4 CPU with FPU
2. Maximum operating frequency: 48 MHz
3.  flash memory: Up to 256-KB code
4. Serial Communications Interface (SCI) × 5
5. 12-bit A/D Converter (ADC12)
6. Operating Voltage: 1.7 V to 3.6 V
7. Crystal oscillator: 4-to-26 MHz
8. Operating Temperature: -40℃ to +85℃
9.  Tolerance: 5-V