STMicroelectronics STM32F405 32-bit Microcontroller User Manual

STMicroelectronics STM32F405 32-bit Microcontroller User Manual

Introduction

This reference manual targets application developers. It provides complete information on how to use the STM32F405xx/07xx, STM32F415xx/17xx, STM32F42xxx and STM32F43xxx microcontroller memory and peripherals. The STM32F405xx/07xx, STM32F415xx/17xx, STM32F42xxx and STM32F43xxx constitute a family of microcontrollers with different memory sizes, packages and peripherals. For ordering information, mechanical and electrical device characteristics, please refer to the datasheets. For information on the ARM Cortex®-M4 with FPU core, please refer to the Cortex®-M4 with FPU Technical Reference Manual.

FAQs

What core architecture does the STM32F405 use?

It is based on the high-performance Arm Cortex-M4 32-bit RISC core with a Floating Point Unit (FPU).

What is the maximum operating frequency of the STM32F405?

The Cortex-M4 core can operate at a frequency of up to 168 MHz.

What types and sizes of memory are included in the STM32F405?

It includes up to 1 MB of Flash memory, up to 192 KB of SRAM, and up to 4 KB of backup SRAM.

What analog peripherals are available on the STM32F405?

The microcontroller features three 12-bit ADCs and two DACs.

What timers are available on the STM32F405?

There are twelve general-purpose 16-bit timers including two PWM timers for motor control.

Does the STM32F405 include any random number generation capabilities?

Yes, it features a true random number generator (RNG).

What communication interfaces are supported?

It has a range of standard and advanced interfaces, including USB OTG High Speed Full Speed and Ethernet.

Is there any real-time clock (RTC) functionality on the STM32F405?

Yes, it includes a low-power RTC.

What are the primary applications of the STM32F405 microcontroller?

It is widely used in applications requiring high performance and real-time control such as motor control, industrial automation, and consumer electronics.

What development resources are available for STM32F405?

STM32Cube development ecosystem, comprehensive datasheets, reference manuals, and various middleware and software libraries are available.
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References

Published: September 16, 2025

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