PIC16F873-20/SP

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The PIC16F873-20/SP is an 8-bit microcontroller manufactured by Microchip and used in embedded applications. It is based on a RISC architecture (Reduced Instruction Set Computing) and is designed to be used in a wide range of applications, ranging from motor control and communication to timing and measurement. This article will discuss the application field and working principle of the PIC16F873-20/SP.

The PIC16F873-20/SP is a low-cost, low-power microcontroller with a wide range of features. It has 32KB of program memory and up to 32KB of Data EEPROM space, which makes it suitable for advanced applications that require large amounts of code and data. The microcontroller also has a number of Input/Output (I/O) ports such as analog inputs, digital I/Os, USARTS, and even a pulse-width-modulated (PWM) output. This makes the device suitable for many different types of applications such as motor control, communications, timing, and measurement.

One of the more powerful features of the PIC16F873-20/SP is its ability to execute instructions in a single cycle. This means that the device can perform complex calculations in a very short time, making it ideal for real-time embedded applications such as motor control, communications, and real-time audio processing. Additionally, the device has other features such as a watchdog timer, low-power sleep modes, and a voltage-regulator that make it suitable for low-power applications.

The PIC16F873-20/SP is pre-programmed with an on-chip bootloader, which allows the user to program the device over a simple serial interface. The bootloader uses a simple command set to read, write, and erase the device\'s program memory. This makes it extremely easy to update the device\'s firmware or add additional functionality to it. The bootloader can also be used to protect the device from unauthorized access.

The principal of operation for the PIC16F873-20/SP involves writing instructions into the device\'s memory and then executing those instructions. An instruction set is used to program the device and this involves the use of a programming language such as assembly or C. The instructions will then be carried out by the device in a predetermined order, with the results being stored within the device\'s program memory. This process is known as instruction execution.

The instructions that can be written into the device\'s memory will depend on the type of application the device is being used in, as each application will require different instructions to be executed. For example, an application that requires motor control will require instructions for controlling the motor\'s speed and rotation, whereas a communication application will require instructions for transmitting and receiving data. In general, the instructions can be manipulated using a high-level programming language such as C.

Overall, the PIC16F873-20/SP is an inexpensive and powerful microcontroller that is suitable for a wide range of applications. Its ability to execute instructions in a single cycle make it ideal for embedded applications that require real-time processing and other features such as a bootloader, low-power modes, and a voltage regulator make it suitable for low-power applications.

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