PIC17C756A-16/L

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Embedded - Microcontrollers: PIC17C756A-16/L application field and working principle

The PIC17C756A-16/L is a 16 bit advanced microcontroller with a Harvard Architecture and a built-in 8KB ROM and 384 bytes of RAM. It has seven general-purpose registers and one status register, a program counter, and an address pointer that together operate in multiple addressing modes. The advanced chip has four interrupt sources and an internal oscillator with programmable baud rates.

Application Fields

Some applications of the PIC17C756A-16/L are motor control, energy conservation and management, signal conditioning and data acquisition, displays and graphic interfaces, medical monitoring, general control and power switching, and telecommunication, energy, and machine control.

Working Principle

The processor circuit of the PIC17C756A-16/L is composed of three parts, including the core, the RAM and the ROM, and the I/O logic and ADCs. The core of the processor is responsible for execution of the instructions, while the RAM and the ROM are used to store the data during computation and the program instructions themselves, respectively. The I/O logic and ADCs are used to connect the microcontroller with digital and analog sensors/devices, while the RAM and the ROM are used to store the data that is being generated by the I/O logic and ADC.

The core of the PIC17C756A-16/L is responsible for controlling the execution of the program instructions that are stored in the ROM. The instructions are fetched from the ROM one after another based on the program counter, which is incremented each time an instruction is fetched. The instructions are executed sequentially, fetching the data from the RAM when necessary. After the execution of each instruction, the status register is checked and the next instruction is loaded from the ROM according to the result.

When the program counter reaches the end of the ROM, a Reset or Power On Reset signal is sent, which causes the microcontroller to jump back to the first instruction in the program, thus restarting the program. This enables the microcontroller to repeat the execution of the same program again and again.

The PIC17C756A-16/L also offers a wide range of peripheral peripherals, including analog-to-digital converters, Pulse-Width Modulator, Digital Signal Processor, Flash Memory, UART and RS 232 interface, I2C and SPI interface, Pulse-Code Modulation, and three timers. All these peripherals are used to provide a wide range of functionalities to the microcontroller.

The PIC17C756A-16/L is an advanced microcontroller that is highly versatile and can be used in a wide range of applications. Its wide range of peripherals, its multiple addressing modes, and its advanced architecture make it an ideal choice for many projects that require a high level of performance and flexibility.

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