STM32L476RET6 vs AT90USB1286-AU
| Part Number |
|
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| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Manufacturer | STMicroelectronics | Microchip Technology |
| Description | IC MCU 32BIT 512KB FLASH 64LQFP | IC MCU 8BIT 128KB FLASH 64TQFP |
| Package | Tray | Tray |
| Series | STM32L4 | AVR® 90USB |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 64-LQFP | 64-TQFP |
| Supplier Device Package | 64-LQFP (10x10) | 64-TQFP (14x14) |
| Voltage - Supply (Vcc/Vdd) | 1.71V ~ 3.6V | 2.7V ~ 5.5V |
| Speed | 80MHz | 16MHz |
| Number of I/O | 51 | 48 |
| EEPROM Size | - | 4K x 8 |
| Core Processor | ARM® Cortex®-M4 | AVR |
| RAM Size | 128K x 8 | 8K x 8 |
| Core Size | 32-Bit | 8-Bit |
| Connectivity | CANbus, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG | EBI/EMI, I²C, SPI, UART/USART, USB |
| Peripherals | Brown-out Detect/Reset, DMA, LCD, PWM, WDT | Brown-out Detect/Reset, POR, PWM, WDT |
| Program Memory Size | 512KB (512K x 8) | 128KB (128K x 8) |
| Program Memory Type | FLASH | FLASH |
| Data Converters | A/D 16x12b; D/A 2x12b | A/D 8x10b |
| Oscillator Type | Internal | Internal |
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1. What is an embedded microcontroller?
An embedded microcontroller is a device that integrates an entire computer system into a single chip. It usually includes functional modules such as a central processing unit, memory, input and output ports, and timers, all of which are integrated on a single chip. This design enables embedded microcontrollers to perform specific tasks with high flexibility and efficiency.
The main features of embedded microcontrollers include:
Highly integrated: multiple functions such as CPU, memory, and I/O interface are integrated on a single chip, reducing the number of components and system volume.
Strong specialization: Optimized for specific application scenarios, providing a specific combination of processing power, memory, and input and output interfaces.
Efficient and reliable: The integrated design makes the system more stable and reliable, reducing the connection of external components and signal interference.
High flexibility: According to different application requirements, embedded microcontrollers can have multiple derivative products, each with the same processor core, but different memory and peripheral configurations to adapt to different application scenarios. -
2. 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. -
3. Is Raspberry Pi a microcontroller?
Raspberry Pi is not a microcontroller in the traditional sense. Raspberry Pi is a microcomputer, often called a single-board computer, which has more powerful computing power and more functions, including writing code directly on the device and running multiple programming languages.
Raspberry Pi has some features of a microcontroller, such as it also has GPIO (general input and output) pins, which can control external devices through these pins. In addition, Raspberry Pi can also be used for the development of embedded systems, especially in application scenarios that require higher computing power. -
4. What is STM32 embedded?
STM32 is a microcontroller suitable for control applications. It comes with various commonly used communication interfaces, such as USART, I2C, SPI, etc., and can control a variety of devices. In real life, many electrical products we come into contact with have STM32, such as smart bracelets, micro quadcopters, balance cars, mobile POS machines, smart rice cookers, 3D printers, etc.
An embedded system is a special computer system centered on applications, based on computer technology, and with customizable software and hardware. It requires small size, high reliability, low power consumption, and stable performance. The embedded system is divided into hardware layer, driver layer, operating system layer, and application layer. The hardware layer is the foundation of the entire system. The driver layer needs to write a driver program to enable the hardware to communicate with the operating system. The operating system layer is responsible for task scheduling and management, and the application layer is the interface and function implementation for direct user interaction.
