PIC16F877T-20/PT

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PIC16F877T-20/PT Application Field And Working Principle

The Peripheral Interface Controller (PIC) 16F877T-20/PT is a popular microcontroller from Microchip. The PIC16F877T-20/PT is a single-chip 8-bit CMOS microcontroller manufactured by Microchip, based on the Microchip PIC microcontroller core architecture. The PIC16F877T-20/PT features a built-in 8-bit counter/timer, an analog-to-digital converter (ADC), 16 KB of flash program memory, four 8-bit I/O ports (A, B, C and D), two 6-bit ports (E and F) for parallel I/O, 8 channels dedicated for analog input, and 2 13-bit computers for pulse-width modulation.

Application Fields

The PIC16F877T-20/PT is used in a variety of applications, ranging from automotive systems and home appliances to industrial automation and embedded applications such as data acquisition and communications. In automotive systems, the PIC has been used for engine control, HVAC control, and vehicle monitoring. In industrial automation, it has been used in robotics, process control, process measurement and instrumentation. Additionally, it can also be used in embedded projects.

Working Principle

The PIC16F877T-20/PT executes instructions in a fixed sequence. The instruction sequence, or program, is stored in program memory. Program memory is typically 8K bytes or 16K bytes of flash memory, which can be programmed with an appropriate programming tool. Program memory is re-programmable and can be changed to suit different applications.

The processor fetches instructions from program memory, or from registers, according to the machine language instructions, and executes the instructions. Instructions can be either 8-bit, or 12-bit long. An instruction format is either an 8-bit format or an expanded 12-bit format, depending on the particular instructions. The PIC16F877T-20/PT has four general-purpose registers that can be used to store and manipulate data.

The processor has several built-in functions, such as 8-bit arithmetic, logical operations, and program branching, which allow the user to write efficient and effective programs. The microcontroller also includes an interrupt system that enables events to be detected and appropriately serviced. Additionally, the embedded A/D converter can measure analog voltage and frequency.

Enough of Such Basics

PICs are effective tools for a range of applications. With the advent of pocket-sized programmable embedded peripherals, that use PICs for their microcontroller cores, the simplicity of setup, control and data manipulation, put a unique power in the hands of electronic designers. With the right understanding of the application, and a good set of development tools, applications based on these powerful chips can be built quickly.

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