8051: Intel Microcontroller
Dr. Y. Narasimha Murthy.Ph.D yayavaram@yahoo.com
INTEL 8051 MICRCONTROLLER
Introduction :
A decade back the process and control operations were totally implemented by the Microprocessors only. But now a days the situation is totally changed and it is occupied by the new devices called Microcontroller. The development is so drastic that we can’t find any electronic gadget without the use of a microcontroller. This microcontroller changed the embedded system design so simple and advanced that the embedded market has become one of the most sought after for not only entrepreneurs but for design engineers also.
What is a Microcontroller?
A single chip computer or A CPU with all the peripherals like RAM, ROM, I/O Ports, Timers , ADCs etc... on the same chip. For ex: Motorola’s 6811, Intel’s 8051, Zilog’s Z8 and PIC 16X etc…
MICROPROCESSORS & MICROCONTROLLERS:
Microprocessor:
A CPU built into a single VLSI chip is called a microprocessor. It is a general-purpose device and additional external circuitry is added to make it a microcomputer. The microprocessor contains arithmetic and logic unit (ALU), Instruction decoder and control unit, Instruction register, Program counter (PC), clock circuit (internal or external), reset circuit (internal or external) and registers. But the microprocessor has no on chip I/O Ports, Timers , Memory etc.
For example, Intel 8085 is an 8-bit microprocessor and Intel 8086/8088 a 16-bit microprocessor. The block diagram of the Microprocessor is shown in Fig.1
[pic]
Fig.1 Block diagram of a Microprocessor.
MICROCONTROLLER:
A microcontroller is a highly integrated single chip, which consists of on chip CPU (Central Processing Unit), RAM (Random Access Memory), EPROM/PROM/ROM (Erasable Programmable Read
INTEL 8051 MICRCONTROLLER
Introduction :
A decade back the process and control operations were totally implemented by the Microprocessors only. But now a days the situation is totally changed and it is occupied by the new devices called Microcontroller. The development is so drastic that we can’t find any electronic gadget without the use of a microcontroller. This microcontroller changed the embedded system design so simple and advanced that the embedded market has become one of the most sought after for not only entrepreneurs but for design engineers also.
What is a Microcontroller?
A single chip computer or A CPU with all the peripherals like RAM, ROM, I/O Ports, Timers , ADCs etc... on the same chip. For ex: Motorola’s 6811, Intel’s 8051, Zilog’s Z8 and PIC 16X etc…
MICROPROCESSORS & MICROCONTROLLERS:
Microprocessor:
A CPU built into a single VLSI chip is called a microprocessor. It is a general-purpose device and additional external circuitry is added to make it a microcomputer. The microprocessor contains arithmetic and logic unit (ALU), Instruction decoder and control unit, Instruction register, Program counter (PC), clock circuit (internal or external), reset circuit (internal or external) and registers. But the microprocessor has no on chip I/O Ports, Timers , Memory etc.
For example, Intel 8085 is an 8-bit microprocessor and Intel 8086/8088 a 16-bit microprocessor. The block diagram of the Microprocessor is shown in Fig.1
[pic]
Fig.1 Block diagram of a Microprocessor.
MICROCONTROLLER:
A microcontroller is a highly integrated single chip, which consists of on chip CPU (Central Processing Unit), RAM (Random Access Memory), EPROM/PROM/ROM (Erasable Programmable Read