PIC16C73A-20E/SP vs MCF51EM256CLK
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| Category | Embedded - Microcontrollers | Embedded - Microcontrollers |
| Manufacturer | Microchip Technology | NXP USA Inc. |
| Description | IC MCU 8BIT 7KB OTP 28SPDIP | IC MCU 32BIT 256KB FLASH 80LQFP |
| Package | Tube | Bulk |
| Series | PIC® 16C | MCF51EM |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | 28-DIP (0.300\", 7.62mm) | 80-LQFP |
| Supplier Device Package | 28-SPDIP | 80-LQFP (14x14) |
| Voltage - Supply (Vcc/Vdd) | 4V ~ 6V | 1.8V ~ 3.6V |
| Speed | 20MHz | 50MHz |
| Number of I/O | 22 | 56 |
| EEPROM Size | - | - |
| Core Processor | PIC | Coldfire V1 |
| RAM Size | 192 x 8 | 16K x 8 |
| Core Size | 8-Bit | 32-Bit |
| Connectivity | I²C, SPI, UART/USART | I²C, SCI, SPI |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT | LCD, LVD, PWM, WDT |
| Program Memory Size | 7KB (4K x 14) | 256KB (256K x 8) |
| Program Memory Type | OTP | FLASH |
| Data Converters | A/D 5x8b | A/D 12x16b |
| Oscillator Type | External | External |
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1. What is the difference between Arduino and Embedded C?
The main differences between Arduino and Embedded C are their application scenarios, development difficulty and hardware design. Arduino is more suitable for rapid prototyping and teaching, while Embedded C is suitable for scenarios that require high performance and professional applications.
Arduino is an open source hardware platform mainly used for rapid prototyping and teaching. It uses high-level programming languages such as C++ and provides an easy-to-use development environment, allowing beginners to quickly get started and implement projects. In contrast, embedded C is often used in high-performance and professional application scenarios, such as industrial control, automotive electronics and other fields. Embedded C programming usually involves low-level hardware knowledge and more complex programming skills. The language used may be C or C++, but memory and hardware resources need to be managed manually. -
2. 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. -
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.
