ARCHITECTURE AND INSTRUCTION SET OF 8051.pptx

ARCHITECTURE AND INSTRUCTION SET OF 8051

1. UNIT-1 ARCHITECTURE AND INSTRUCTION SET OF 8051 1.1 ARCHITECTURE OF 8051 1.1.1 - Unit Introductory Class 1.1.2 - Introduction To 8051 1.1.3 - Features Of Microcontroller 8051 1.1.4 - Applications Of Microcontroller 1.1.5 - Comparison Of Microprocessor And Microcontroller

2. 1.1.1 - UNIT INTRODUCTORY CLASS The microcontroller incorporates all the features that are found in microprocessor. The microcontroller has built in ROM, RAM, Input Output ports, Serial Port, timers, interrupts and clock circuit. A microcontroller is an entire computer manufactured on a single chip. Microcontrollers are usually dedicated devices embedded within an application. For example, microcontrollers are used as engine controllers in automobiles and as exposure and focus controllers in cameras

3. 1.1.2 - INTRODUCTION TO 8051 ADVANTAGES OF MICROCONTROLLER DISADVANTAGES OF MICROCONTROLLER As the peripherals are integrated into a single chip, the overall system cost is very low The product is of a small size as compared to the microprocessor-based system and is thus very handy. The system design now requires very little efforts and is easy to trouble shoot and maintain. As the peripherals are integrated with a microcontroller the system is more reliable. Though a microcontroller may have on chip RAM, ROM and I/O ports, additional RAM, ROM and I/O ports may be interfaced externally if required. Learn large instruction set Limited calculation procedure. Fixed programming technique to control machine.  

4. On chip oscillator and clock circuitry 64 Kbyte address spaces for external data memory 1.1.3 - FEATURES OF MICROCONTROLLER 8051 8-bit CPU 32 I/O lines

5. 64 Kbyte address spaces for external code (program) memory Two number of 16-bit timer/counters 1.1.3 - FEATURES OF MICROCONTROLLER 8051 Full duplex serial port and Boolean processor

6. 1.1.4 - APPLICATIONS OF MICROCONTROLLER Entertainment Television and VCR Telephones Xerox copier Microwave ovens Office automation Traffic control Clock radios Washing machines, Electronic toys & Automobiles

7. S.no MICROPROCESSOR MICROCONTROLLER 1 It is a general purpose digital computer It is a special purpose digital computer 2 It contains CPU register, memory addressing circuits, interrupt handling circuits etc. It contains CPU, timer/counters, serial and parallel ports, internal RAM, internal ROM etc.., 3 It has many op-codes for moving data from external memory to CPU. It has one or two op-codes for moving data from external memory. 4 It has one or two-bit handling instructions. It has many bit handling instructions 5 To function as computer, it needs additional external parts. To function as computer, it does not need any external parts. 6 Example: 8085, 8086, Z80 etc., Example: 8051, 8048, 8052 etc.., 1.1.5 - Comparison Of Microprocessor And Microcontroller

8. DIAGRAM