PIC18F85K22-E/PT

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The PIC18F85K22-E/PT is a widely used microcontroller, particularly in the field of embedded system. Developed by Microchip Technology Inc., a global leader in the design, manufacture, and sale of semiconductor-based microcontrollers, this device offers advantages such as a powerful core, enhanced peripheral, and RAM compatibility making it is a desirable choice for embedded projects.

Overview

The PIC18F85K22-E/PT, is a 18-pin 8-bit microcontroller with an 8-bit CPU which operates at 16 MIPS, and an 8-bit data memory. It possesses 32×8-bit register files, 32K x 16 RAM, 2048 bytes of Flash memory, 1xPeripheral Interface Controller (PIC), and a 13-bit Timer/Counter module. The internal RAM of this device offers improved data throughput due to its wide data bus, while it also features an I2C peripheral that enables reliable communication between various peripherals and the microcontroller. Moreover, the microcontroller’s integrated digital-analog converter (DAC) enables accurate voltage to be processed. The PIC18F85K22-E/PT has an outstanding selection of peripheral devices, making it great for prototyping applications.

Application Fields

The PIC18F85K22-E/PT microcontroller is very popular in embedded applications, some of which include industrial control systems, motor control systems, automotive systems, medical and industrial instrumentation, gaming systems, home appliances, and robotics.One of the key benefits of this device is its ability to interface with a variety of subsystems, such as the SPI and I2C protocols, ACE, ADC, Timer/Counter, and UART protocol. Hence, it is capable of controlling servo motors, incorporating infrared communication, using sensor networks, reading bar codes, and even implementing wireless communication. Moreover, the PIC18F85K22-E/PT is capable of directly controlling power switches, LED lighting systems, security systems, and more.

Working Principle

The core of the PIC18F85K22-E/PT microcontroller is based on an architecture that can execute instructions in a single cycle. In addition to this, the instruction format of this device is designed for flexibility, allowing it to perform multiple types of operations, in addition to arithmetic and logical functions. By default, the PIC18F85K22-E/PT runs on a 8-bit data bus, but it can also be configured to communicate using a 16-bit data bus. Also, it provides a wide range of peripheral features, such as a 3-channel 10-bit Analogue-to-Digital Converter, a 2-channel 10-bit Digital-to-Analogue Converter, and an 11-channel Digital-to-Analogue Converter.The device has seven interrupt levels, allowing it to easily handle multiple interrupt requests. Moreover, the unique features of this device, such as the 1-Wire interface, the Multiple-Master Clock Select feature or the Direction Control feature, make it especially suitable for applications that need to have high performance. To sum up, the PIC18F85K22-E/PT microcontroller is a powerful, low-cost, and highly efficient device that provides performance enhancements over legacy microcontrollers. It is suited for a wide range of applications in fields such as industrial, automotive, home appliances, power switch control, and others. Its combination of features and flexibility make it an excellent choice for embedded system and prototyping applications.

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