Microcontrollers introduction, microcontrollers types and. Embedded systems 6 system a system is an arrangement in which all its unit assemble work together according to a set of rules. Microcontroller is a computer on single integrated circuit that includes a cpu, ram, some form of rom, and io ports. Important features of 8051 4k bytes rom 128 bytes ram four 8bit io ports two 816 bit timers serial port 64k external code memory space 64k data memory space multiple internal and external interrupt sources9. It has great impact in our life which cannot be ignored. Important features of 8051 4k bytes rom 128 bytes ram four 8bit io ports two 816 bit timers serial port 64k external code memory space 64k data memory space multiple internal and external interrupt sources architecture of 8051 microcontroller oscillator and timing 4096 bytes program memory rom 128 bytes data memory ram. Class notes of microcontrollers bms institute of technology. Introduction to 8051 microcontroller bharat acharya. Alu can perform arithmetic and logic functions on 8 bit variables. Technically called as intel mcs51 architecture, the 8051 microcontroller series was developed by intel in the year 1980 and were very popular. Embedded systems 8051 microcontroller tutorialspoint. The 8051 microcontroller and embedded systems using.
Commonly used instructions of the 8051 microcontroller. What are the various criteria to choose microcontroller. The 8051 microcontroller has two buses and two memory spaces of 64k x 8 size for program and data units. Microcontrollers notes for iv sem ecetce students saneesh.
It was based on harvard architecture and developed primarily for. Features of 8051 microcontroller 4 kb on chip program memory. Consumer appliances tv tuners, remote controls, computers, sewing machines, etc. Architecture of 8051 microcontroller oscillator 4096 bytes 128 bytes two 16 bit and timing program memory data memory timerevent rom. Unit iii intel 8051 microcontrollers microcontrollers vs. Viva quiz l basic features bharat acharya education duration. The 8051 microcontroller is one of the basic type of microcontroller, designed by intel in 1980s. Microcontroller 8051 is basic among all the mcus and excellence for beginners.
List some 8051 microcontroller applications in embedded systems. The 8051 is a harvard architecture, cisc instruction set, single chip. Introduction to pic16f877 microcontroller architecture and features. It is a 40pin microcontroller with vcc of 5v connected to pin 40 and vss at pin 20 which is kept 0v. It has an 8 bit processing unit and 8 bit accumulator units. P89c66x, the 16 bit extended architecture xa and the low pin count lpc devices. Home applications tvs, vcr, video games, camcorder, music instruments, home security systems, garage door openers, etc. The 80518052 microcontroller architecture, assembly language, and hardware interfacing craig steiner universal publishers boca raton, florida.
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