STM32F407VET6TR vs R5F2138ACNFP#V0
| Part Number |
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| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Manufacturer | STMicroelectronics | Renesas Electronics America Inc |
| Description | IC MCU 32BIT 512KB FLASH 100LQFP | IC MCU 16BIT 96KB FLASH 80LQFP |
| Package | Tray | Tray |
| Series | STM32F4 | R8C/3x/38C |
| Operating Temperature | -40°C ~ 85°C (TA) | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 100-LQFP | 80-LQFP |
| Supplier Device Package | 100-LQFP (14x14) | 80-LQFP (12x12) |
| Voltage - Supply (Vcc/Vdd) | 1.8V ~ 3.6V | 1.8V ~ 5.5V |
| Speed | 168MHz | 20MHz |
| Number of I/O | 82 | 75 |
| EEPROM Size | - | - |
| Core Processor | ARM® Cortex®-M4 | R8C |
| RAM Size | 192K x 8 | 8K x 8 |
| Core Size | 32-Bit | 16-Bit |
| Connectivity | CANbus, DCMI, EBI/EMI, Ethernet, I²C, IrDA, LINbus, SPI, UART/USART, USB OTG | I²C, LINbus, SIO, SSU, UART/USART |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LCD, POR, PWM, WDT | POR, PWM, Voltage Detect, WDT |
| Program Memory Size | 512KB (512K x 8) | 96KB (96K x 8) |
| Program Memory Type | FLASH | FLASH |
| Data Converters | A/D 16x12b; D/A 2x12b | A/D 20x10b; D/A 2x8b |
| Oscillator Type | Internal | Internal |
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1. What is the most widely used microcontroller in embedded systems?
The most widely used microcontroller in embedded systems is the STM32 series. The STM32 series microcontroller is a chip series widely used in embedded system development, and is favored for its high performance, low power consumption and rich peripheral resources.
The STM32 series of microcontrollers has a variety of models and derivatives suitable for different application requirements. These microcontrollers usually integrate components such as CPU, ROM, RAM, IO ports, timers, interrupt controllers, etc., which can meet the needs of various application scenarios. The STM32 series of microcontrollers play an important role in the fields of household appliances, automotive electronics and medical equipment.
The wide application of the STM32 series of microcontrollers is due to its powerful functions and flexibility. It is not only suitable for controlling various electrical and electronic equipment, but also performs well in occasions requiring high-performance computing. In addition, the development tools and community support of the STM32 series of microcontrollers are also very complete, allowing developers to quickly get started and develop efficiently. -
2. Is Raspberry Pi an embedded system?
Raspberry Pi is an embedded system. Raspberry Pi is a single-board computer based on ARM architecture with rich input and output interfaces and powerful computing power. It can run the Linux operating system and support multiple programming languages such as Python and C++. Due to its compact size and powerful functions, Raspberry Pi is widely used in various embedded systems and robotics projects.
Features of Raspberry Pi include:
Based on ARM architecture: Raspberry Pi adopts ARM architecture, which is an architecture widely used in embedded systems with low power consumption and high efficiency.
Rich interfaces: It has USB interface, Fast Ethernet interface, SD slot, HDMI output interface, etc., and can connect a variety of peripherals.
Open source software support: It supports multiple programming languages and a large number of open source software libraries, which is convenient for development and expansion.
Wide application: It is often used to build routers, smart cars, smart homes, servers and other applications.
Disadvantages of Raspberry Pi include:
Single 5V power supply: The power supply design is simple, which may cause unstable operation of peripherals.
Bandwidth limitation: The USB interface has limited bandwidth and may encounter performance bottlenecks when transmitting large amounts of data. -
3. What is the difference between an embedded MCU and a PLC MCU?
The main difference between an embedded MCU and a PLC MCU is that their application fields, system architectures, and programming methods are different.
Although both embedded MCUs and PLC MCUs involve MCU technology, their application fields are significantly different. Embedded MCUs are mainly used in non-industrial fields such as consumer electronics, automobiles, aerospace, etc. They emphasize high specificity and flexibility and can be customized according to specific needs. PLC MCUs are mainly used in industrial automation control fields, such as electricity, petroleum, chemical industry, machinery manufacturing, etc. The original design intention is to adapt to complex industrial environments and have strong stability and reliability.
In terms of system architecture, embedded MCUs usually have fixed hardware and software configurations, are designed and developed for specific applications, and hardware and software are tightly integrated to form a complete system. PLC MCUs are based on a modular architecture, and different modules can be added to achieve different functions. Both hardware and software are standardized, which is convenient for users to select and configure.
In terms of programming language, embedded MCUs are usually programmed in high-level programming languages such as C and C++. These programming languages have powerful functions and flexibility and can meet complex programming needs. PLC MCUs are mainly programmed in ladder diagram language. This graphical programming method is simple and easy to understand, which is convenient for users to get started quickly. In addition, it also supports some text programming languages, such as instruction lists and structured text. -
4. What language is used for embedded microcontroller programming?
The main languages used for embedded microcontroller programming include C, C++, assembly language, Python and Rust. These languages have their own characteristics and are suitable for different development needs and scenarios.
C is one of the most commonly used languages in embedded development. It has the advantages of high efficiency, flexibility, and strong portability. It can directly operate hardware and is suitable for low-level driver development, kernel programming, etc. C++ is used in complex embedded systems and adds object-oriented features, which is suitable for the development of large applications. Although assembly language is difficult to learn and write, it is indispensable in scenarios that require high optimization and direct control of hardware. Python is easy to learn and use, and is often used in data processing, prototype development, and rapid testing. Rust is gradually gaining attention in the embedded field due to its memory safety and high performance, especially in applications with high security requirements.
