Microcontroller and risc architecture 2 marks with answers pdf

Mcs 8051 is an 8bit single chip microcontroller with many builtin functions and is the core for all mcs51 devices. Pdf microprocessors and micro controllers two marks with answers. Ec6504 notes syllabus all 5 units notes are uploaded here. Microcontrollers 8051 architecture 8051 microcontroller is designed by intel in 1981. Section 3 details the implementation methodology, including some real examples of handelc code used in the design and the overall project details. Lecture note on microprocessor and microcontroller theory. The program adds the contents of two memory locations, and views their sum on. The opposed trend to risc is that of complex instruction set computers cisc.

The atmega328p microcontroller used by the arduino avr 8bit risc architecture available in dip package up to 20 mhz clock 32kb flash memory 1 kb sram 23 programmable io channels six 10bit adc inputs three timerscounters six pwm outputs. Download microprocessor and microcontroller system by a. Introduction to pic microcontrollers and its architecture. In the following figures, op means the operation code part of the instruction word. Differentiate synchronous communication and isosynchronous communication. In the following section 2 we outline the architecture of the risc microcontroller implemented in this design case study. Ec6504 microprocessor and microcontroller syllabus notes. Risc chips requires lesser hardware implementations, which makes them simpler. The peripherals might include some analogtodigital or digitaltoanalog converters, andor a usb controller andor i. Inputoutput devices, buffers, encoders, latches and memories. Cpu is not different from other microcontrollers cpu. As i said earlier pic micro controller supports the risc architecture that is reduced instruction set computer, if a computer or controller is said that it supports reduced instruction set you should remember the following points. It is an 8bit family of microcontroller developed by intel in the year 1981. If you want to share some of your views or some other papers, you are most welcome to do so.

Pic microcontroller architecture and advantages cpu, ram. Since it follows the risc architecture, all single cycle instructions take only one instruction cycle except. Microcontrollers notes for iv sem ecetce students saneesh. Gives a brief introduction of 8051 microcontroller. This microcontroller was also referred to as system on a chip because it has 128 bytes of ram, 4kbytes of rom, 2 timers, 1 serial port, and four ports on a single chip. Model question paper of microcontroller for ece with pdf to download. They are really registers for communicating with the offchip devices or at least offmodule, if the microcontroller is embedded in an soc that you are controlling with the microcontroller. Lecture 2 risc architecture philadelphia university. Risc architectures represent an important innovation in the area of computer organization.

A directory of objective type questions covering all the computer science subjects. Architecture refers to the way a processor is planned and built and can refer to either the hardware or the software that is closest to. Typical features of risc architecture pipelining technique of risc, executes multiple parts or stages of instructions simultaneously such that every instruction on the cpu is optimized. To simplify, not all figures show the exact location of the addressing bits. Intel 8051 8bit harvard architecture, single chip microcontroller. Explains about io ports, interrupts,timerscounters, serial communication etc. Anna university ec6504 microprocessor and microcontroller syllabus notes 2 marks with answer is provided below. When two bcd numbers are added, the answer is a nonbcd number. It is built with 40 pins dip dual inline package, 4kb of rom storage and 12. While designing a processor the two basic philosophies used are. Describe the architecture of 8051 with neat diagram. Microcontroller and risc architecture 2 marks question bank vi semester b.

To design and develop microprocessor microcontroller based systems for real time applications. Most computers today are based off systems of similar design, so we decided to build our processor to have a better understanding of the microprocessor architecture. Arduino architecture rochester institute of technology. The pic microcontroller is based on risc architecture. Risc stands for reduced instruction set computer and is a type of architectural processor design strategy. Most popular in the 1980s and early 1990s, today superseded by enhanced devices with 8051compatible processor cores manufactured by more than 20 independent. The 8051microcontrollers, architecture and programming and applications k. A label is a special mark we can set up at each command or address. Explains how microcntroller differs from microprocessor, features of risc and cisc, etc. The core architecture is highperformance risc cpu with only 35 single word1 instructions.

Cs2252 microprocessors and microcontrollers iv sem. Implementation of arm cortex microcontroller the arm cortex microcontroller is an advanced microcontroller in the arm family, which is developed by the armv7 architecture. In this architecture for both instruction and data a single data path or bus is present. What is microcontroller and microcomputer pointer register is decremented by two microcontroller is a device that includes microprocessor. Ee6502 microprocessors and microcontrollers unit i 8085 processor hardware architecture, pinouts functional building blocks of. Multiple choice questions on microprocessor topic risc architecture. Also develop technologies to assist with the designing of.

Explain the interrupt structure of 8051 microcontroller explain how interrupts are prioritized. Microprocessor multiple choice questions and answersrisc. Section 3 explains the notation for specif ying the algorithm s. Harvard architecture uses separate memories for program and data memory.

The atmel avr enhanced risc microcontrollers offer an architecture concept for high performance and lowpower consumption simultaneously. Practice these mcq questions and answers for preparation of various competitive and entrance exams. Go ahead and pendown your words in the comment box below. Most of the microprocessors use cisc architecture and vonneumann architecture, where as microcontroller used harvard and risc architecture most probably. But there are some microcontroller uses cisc architecture like 8051 and sharc. Model question paper of microcontroller for ece with pdf. Risc, or reduced instruction set computer is a type of microprocessor architecture that utilizes a small, highlyoptimized set of instructions, rather than a more specialized set of instructions often found in other types of architectures. Microcomputer is a computer that is designed using microprocessor as its cpu. Pic microcontroller cpu consists of arithmetic logic unit alu, memory unit mu, control unit cu, accumulator etc. Harvard architecture, risc architecture, 1 instruction cycle 4 clock cycles. A full range of avr mcus from baseline to top end feature a risc architecture and instruction set optimized for efficient. The arm microcontroller architecture come with a few different versions such as armv1, armv2 etc and each one has its own advantage and disadvantages. Pic16f84belongs to a class of 8bit microcontrollers of risc architecture.

Risc architecture reduced instruction set computer. The intel 8051 microcontroller is one of the most popular generalpurpose microcontrollers in use today. Microcontroller embedded processor digital signal processor media processor 2. When executed, this instruction loads the two values into separate registers. Complex instruction set computerscisc reduced instruction set computers risc so when i. The risc architecture is faster and the chips required for the manufacture of risc architecture is also less expensive compared to the cisc architecture.

Its memory architecture follows the harvard pattern of separate memories for program and data, with separate buses. Discuss the advantages of microcontrollers over microprocessors in control applications. What is risc and cisc architecture and their workings. Pic 16f877 architecture pic 16f877 is a 40pin 8bit cmos flash microcontroller from microchip. Read end of conversion signal to mark the end ofconversion processes. Reduced instruction set computer risc processors complex instruction set computer cisc processors 2. Because of physical limitations the rate of performance improvement in conventional processors is decreasing. List out the factors controlling the popularity of pic microcontroller. Risc architecture only 35 instructions to learn all singlecycle instructions except branches operating frequency 020 mhz precision internal oscillator factory calibrated software selectable frequency range of 8mhz to 31khz power supply voltage 2. Figure 1 typical risc architecture based machine instruction phase overlapping definition of risciii 5. For the love of physics walter lewin may 16, 2011 duration. The avr enhanced risc microcontroller supports powerful and efficient addressing modes for access to the program. Section 2 in troduces the a tmel risc microcontroller which will be used throughout this paper.