4.1.7.2. STM32 Overview

The STM32F411 is part of STMicroelectronics’ STM32 Dynamic Efficiency™ series, offering a balance between high performance and low power consumption. It is based on the ARM Cortex-M4 core and is designed for applications requiring efficient processing and power savings, packaged in a compact 3x3 mm form.

4.1.7.2.1. Core and Performance

  • ARM Cortex-M4 core with Floating Point Unit (FPU).

  • Operates up to 100 MHz, providing 125 DMIPS (1.25 DMIPS/MHz).

  • ART Accelerator for zero-wait-state flash execution, improving performance.

  • Supports DSP instructions for efficient signal processing.

4.1.7.2.2. Power Efficiency

  • Run mode: 100 µA/MHz (when peripherals are off).

  • Stop mode: As low as 9 µA (typical at 25°C), with quick wake-up options.

  • Standby mode: 1.8 µA (typical at 25°C), and 1 µA when RTC is active.

4.1.7.2.3. Memory

  • 512 KB Flash and 128 KB SRAM for program and data storage.

4.1.7.2.4. Timers and Peripherals

  • Up to 11 timers, supporting PWM, input capture, and quadrature encoder.

  • DMA controller with 16 streams for efficient data transfer.

4.1.7.2.5. I/O and Communication

  • Up to 81 I/O pins with fast I/O speeds (up to 100 MHz).

  • 3 I2C, 3 USART, 5 SPI/I2S, USB 2.0, and SDIO interfaces.

  • 5V-tolerant I/Os for broader compatibility with external

devices.

4.1.7.2.6. Analog Features

  • 12-bit ADC with up to 16 channels and a sampling rate of 2.4 MSPS.

4.1.7.2.7. Debugging and Tracing

  • Serial Wire Debug (SWD) and JTAG for debugging.

  • Embedded Trace Macrocell (ETM) for real-time code tracing.

4.1.7.2.8. Compliance

  • ECOPACK2 compliant, ensuring environmentally friendly packaging.

4.1.7.2.9. Applications

The STM32F411 is well-suited for applications such as battery-powered devices, real-time systems, and IoT devices, offering efficient power consumption and robust performance in a small package.