Writing about pic-18 in computer desing subject Essay

Writing about pic-18 in ready reckoner desing subject - Essay ExampleThe most popular set of microcontrollers argon those in the 8051 family. These 8051 family is a preferable choice for professionals specializing in embedded systems because they be cheap, readily available, have a larger user plate and also the ability of being reprogrammed with flash reposition. Figure 1 The 8051 Microcontroller Invention of the Intel 8051 led to a radical role of microcontrollers in the embedded systems industry. Intensive research in this field led to design of efficient, higher(prenominal) performance and low power consumption family of microcontrollers. These included AVR, PIC and ARM. These modern microcontrollers are every day being made smarter to include latest communication protocols like USB, I2C, SPI, Ethernet and CAN. History The name PIC refers to the off-base Interface Controller. The first PIC was developed in 1975 by the Microelectronics Division of a company cognise as Gen eral Instruments. It was developed when the Microelectronics Division was testing its 16-bit CPU i.e. CP 1600. ... 1. Base Line PIC They are the least complex family of the 8-bit PIC microcontroller since they are based on 12-bit instruction architecture. They are the smallest and the cheapest of all the PICs and are available 6 to 40 pin packaging. 2. Mid-Range PIC These are based on 14-bit instruction architecture with a 20 MHz clock f number. They are mostly used for industry and even hobbyists because of their accessibility in many peripherals like Op-Amps, ADC, PWM and other communication protocols like SPI, I2C and SPI. 3. Enhanced Mid-Range PIC These are an compound version of Mid-Range core. They provide a greater performance in terms of flash memory, clock speed and power consumption. They also include multiples peripherals and protocols like SPI, I2C and USART. 4. PIC 18 It is the highest performing among the 8-bit PIC families and is based on a 16-bit instruction arch itecture that incorporates an advanced RISC architecture. It is integrated with current communication protocols like transmission control protocol/IP protocol, LIN, CAN and USB for communication with internet based networks. Figure 3 PIC 18 thole Out fund Variation for PIC 18 PIC 18 is available with many memory options such as mask ROM, EPROM and flash memory. These different types of memories are designated as follows Symbol reposition Type Example C EPROM PIC16Cxxx CR Mask ROM PIC16CRxxx F Flash Memory PIC16Fxxx The operating voltage of the PIC 18 ranges from 2.0-5.5 volts. The letter L is included in the controllers name to denote their voltage range i.e. PIC16LFxxx (operating at 2.0-5.5 range) PIC18 Architecture PIC18 microcontrollers are based the Reduced Instruction Set reason architecture (RISC). This is the kind of architecture where the hardware gets reduced with an