1 Introduction.ppt Compatibility Mode

8/6/2019 1 Introduction.ppt Compatibility Mode

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MicroprocessorsMicroprocessors 11--11

Microprocessors


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Books

The Z80 Microprocessor , Hardware , Softwareprogramming & interfacing

Author:Burry B. Brey


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Books

Microcompiuter and Microprocessor : the 8080 ,8085 , Z-80 Programming , interfacing andtrubleshooting


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Books

The 80x86 IBM PC and compatiblecomputers(Design and interfacing ofthe IBM PC PS and compatible)


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Books

Microcontroller 8051


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Books

The 8051 Microcontroller


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Intruduction

Microprocessor (uP)(MPU) A uP is a CPU on a single chip.

Components of CPU ALU, instruction decoder, registers, bus control

circuit, etc.

Micro-computer (u-Computer) small computer

uP + peripheral I/O + memory specifically fordata acquisition and control applications

Microcontroller (uC) u-Computer on a single chip of silicon


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uP vs. uC A uPuP

only is a single-chip CPU bus is availablebus is available RAM capacity, num of port is seletable RAM is larger than ROM (usually)

A uC contains a CPU and RAM,ROM ,Prepherals, I/O port in a single IC internal hardware is fixed Communicate by port ROM is larger than RAM (usually) Small power consumption

Single chip, small board Implementation is easy Low cost


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uP vs. uC cont.

Applications uCs are suitable to

control of I/Odevices in designs

requiring aminimumcomponent

uPs are suitable to

processinginformation incomputer systems.


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uP vs. uC cont.

uC is easy to use and design. Only single chip can be a complete system

interfacing to other devices,

for example, motors, displays, sensors, and

communicate with PC.

In contrast, similar system that builds

from

uP would require a lot of additional units, such as RAM, UART, I/O , TIMER and etc.


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uC is a Reusable Hardware

Logic circuit provides limited function for one

single design. In order to change circuits

functionality, we need to redesign the circuits.

uC can reprogram and change functionality of

every port, input to output or digital to analog

on the fly.


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uCs Many uCs are existing right now.

8051, 68HC11, MSP430, ARM series, and etc.

We may widely divide it with how it is

designed RISC/CISC architecture.

What is the main difference between

RISC/CISC? Does it make any difference to our

application?


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The Microprocessor (MPU)

The uP is the brain of the microcomputer

Is a single chip which is capable of

processing data

controlling all of the components which make up themicrocomputer system

P used to sequence executions of instructions thatis in memory

uP Fetch , Decode , and Execute the instruction

The internal architecture of the microprocessor is

complex.


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The Microprocessor (MPU)

microprocessor (MPU) typically contains

Registers: Temporary storage locations for program

instruction or data.

The Arithmetic Logic unit (ALU): This part of the MPU

performs both arithmetic and logical operations

Timing and Control Circuits: that keep all of the other parts

of system (Regs, ALU, memory & I/O) working together in

the right time sequence


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Microcomputers

All Microcomputers consist of (at least) :

1. Microprocessor Unit (MPU)

2. Program Memory (ROM)

3. Data Memory (RAM) 4. Input / Output ports

5. Bus System

(and Software)

MPU is the brain of microcomputer

1 Introduction.ppt Compatibility Mode

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