STM32F405RGT6 Microcontroller Footprint, Power Circuit, Software Development and More

Ⅰ. What is STM32F405RGT6 microcontroller?

Ⅱ. Symbol, footprint and pin configuration of STM32F405RGT6 microcontroller

Ⅲ. Features of STM32F405RGT6 microcontroller

Ⅳ. Technical parameters of STM32F405RGT6 microcontroller

Ⅴ. Power circuit of STM32F405RGT6 microcontroller

Ⅵ. Dimensions and package of STM32F405RGT6 microcontroller

Ⅶ. Software development of STM32F405RGT6 microcontroller

Ⅷ. Applications of STM32F405RGT6 microcontroller

This article will provide you with a detailed explanation of the information of STM32F405RGT6, including its symbols, features and technical parameters, dimension and package, software development and applications. It will provide strong support for your embedded system design and help you better understand this microcontroller.

The STM32F405RGT6 is a high-performance 32-bit microcontroller manufactured by STMicroelectronics. This controller uses the ARM Cortex-M4 core, with a maximum frequency of up to 168MHz, powerful processing capabilities, and rich peripheral interfaces. Its operating voltage is 3.3V and supports multiple power modes, including running mode, sleep mode, stop mode, etc. These features make it an excellent low-power design. It is equipped with a 12-channel analog-to-digital converter (ADC) with 12-bit resolution for accurate analog signal acquisition. In addition, it has 1MB of flash memory and 192KB of SRAM to meet the storage needs of complex applications.

The naming rules of STM32F405RGT6 include the following three parts:

• STM32: This is the series name of this microcontroller, indicating that it belongs to the STM32 series.

• F405: This is the sub-family name of this microcontroller. F4 indicates that it is based on the Cortex-M4 core, and 05 indicates that its memory capacity is 1M bytes.

• RGT6: This is the package type and family of this microcontroller. R represents Royal type packaging, GT represents high-performance, high-density packaging type, and 6 represents its memory capacity of 1M bytes.

• Security and reliability: It provides various security features such as read-write protection and hardware encryption.

• High-performance processing capabilities: STM32F405RGT6 uses the Cortex-M4 core, with a maximum frequency of up to 168MHz, and has powerful computing and processing capabilities.

• Multiple power management functions: It has built-in multiple power management functions, including power management unit, low power consumption mode, etc., which help to improve the energy efficiency of the system and save energy consumption.

• Multiple memory options: It supports a variety of memory options, including flash memory (maximum capacity 1MB) and SRAM (maximum capacity 192KB), to meet the storage needs of different applications.

• Rich peripheral interfaces: It has a variety of built-in peripheral interfaces, including multiple universal timers, universal serial interfaces, I2C, SPI, USART, etc., for connecting external devices and modules.

• Rich communication capabilities: STM32F405RGT6 supports a variety of communication protocols, including Ethernet MAC, USB OTG, CAN, etc., which can realize communication functions to connect networks and external devices.

• Powerful analog functions: It has multiple 12-bit analog-to-digital converters (ADCs) that can be used for the collection and conversion of analog input signals.

• Built-in multiple timers: It has multiple built-in timers, including general timers, advanced timers and watchdog timers, etc., which can be used to achieve precise timing and timing functions.

The supply voltage range of STM32F405RGT6 is 2.0V to 3.6V. During normal operation, the ideal supply voltage should be within this range. If the voltage exceeds this range, the microcontroller may not work properly or may even be damaged. Therefore, when designing and using the F405RGT6, we need to ensure that a stable power supply voltage is provided and follow the electrical characteristics and power supply requirements provided in the official documentation. Moreover, we can also use power supply filter capacitors, voltage regulators and other circuits to ensure power supply stability and noise suppression.

In the STM32F405RGT6 chip, the power supply pins are VDD and VDDA. Below is a detailed description of these two pins:

1. VDDA: It is the analog power pin and is used to provide analog power to the chip. It should be connected to the chip's analog supply (VDDA).

2. VDD: It is the digital power pin, used to provide the digital power of the chip. It should be connected to the chip's positive supply (VDD).

3. VBAT: “BAT” in the circuit represents the dedicated pin for battery operating mode.

4. VSS: "S" refers to "series" which means public connection, usually referring to the voltage of the common ground terminal of the circuit. The VSS pin is the ground pin of the chip and is used to provide the reference ground of the circuit. The VSS pin usually needs to be connected to system ground or power ground. If a resistor is connected to the VSS pin, it may be for current limiting or circuit protection purposes. Here are the possible scenarios.

(1) Current limitation: In some specific designs, we may need to limit the current flow in the ground loop of the chip to protect the chip and other circuits. In this case, we can connect a suitable resistor to the VSS pin to limit the current through the ground return.

(2) ESD protection: In some cases, in order to increase protection against electrostatic discharge (ESD), we may add a resistor to the VSS pin. This resistor acts as a damper, slowing down the peak current flow of an ESD event and dispersing the energy.

The dimensions of the STM32F405RGT6 are 10 mm in length, 10 mm in width, and 1.4 mm in height. It is supplied in an LQFP package, facilitating convenient soldering and installation.

STM32F405RGT6 supports two programming modes, namely kernel-level real-time operating system and code debugging mode.

1. Kernel-level real-time operating system (RTOS)

In this mode, it can perform all data exchanges between the system kernel and applications. If we need to use the STM32F405RGT6 series microcontrollers for embedded development, then we can use the built-in Linux kernel of the STM32F405RGT6 series products to achieve this function. Since it supports Linux systems, we can use the STM32F405RGT6 series microcontrollers for software development.

2. Code debugging mode (Code Dialog)

It can exchange data between applications and embedded operating systems through interrupts.

• Smart home: It can be used as a control and communication module in a smart home system to achieve remote control and intelligent management of home appliances.

• Aerospace: Due to its high performance and stability, STM32F405RGT6 can also be used in aerospace fields such as flight control systems and navigation systems.

• Automotive electronics: It boasts superior reliability and resistance to interference, making it suitable for diverse applications in automotive electronic systems, including in-car entertainment systems and body control modules.

• Industrial automation: STM32F405RGT6 can be used to control and monitor industrial automation systems. It supports a variety of communication interfaces, such as CAN, Ethernet and USART, providing users with the convenience of communicating with other devices. In addition, it has the ability to handle real-time control tasks.

• Medical equipment: The high performance and precise analog signal acquisition function of STM32F405RGT6 make it very suitable for use in medical equipment, such as electrocardiographs, blood pressure monitors, etc.

Frequently Asked Questions

1. What is the flash memory size of STM32F405RGT6?

STM32F405RGT6 STMicroelectronics - IC: ARM microcontroller | Flash: 1MB; 168MHz; SRAM: 192kB; LQFP64 | TME - Electronic components.

2. How big is a stm32 flash block?

The Flash memory is divided into 2 banks, each having a main memory block containing 256 pages of 2 Kbytes each. Each page is made of 8 rows of 256 bytes. Each main memory block has an information block which contains 3 parts.

3. What are some of the key peripherals on the STM32F405RGT6?

It includes peripherals such as USART, SPI, I2C, ADC, DAC, USB, GPIO, timers, and more.

4. Is Flash memory write protected STM32?

When a sector is protected, it cannot be erased or programmed. Any attempt to write-access the sector will cause a Flash memory error. If at least one sector is write-protected, a mass-erase of the Flash memory cannot be performed. The protection needs to be removed first.

5. What is the purpose of the NVIC in the STM32F405RGT6?

The NVIC (Nested Vectored Interrupt Controller) manages interrupts in the STM32F405RGT6, handling the priority and nesting of interrupts.