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Eng. Mohammed Al Hennawi

INTRODUCTION TO

MICROCONTROLLER

The Islamic University of Gaza

Electrical Engineering Department

What is a Microcontroller ?

is a computer inside a small chip

The microcontroller includes:

• CPU (Brain)

• Memory

• Peripherals (Input/Output)

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Von Neumann and Harvard Computers

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Types of microcontrollers4

PIC features:5

PIC features:

Memory Unit:

The purpose of memories is storing the data.

Flash Program Memory.

Data memory(RAM).

EEPROM.

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PIC features:

Oscillator:

• LP Low Power Crystal

• XT Crystal /Resonator

• HS High Speed Crystal /Resonator

• RC Resistor/Capacitor

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CPU

PIC features:

• RC Resistor/Capacitor

Note: Freq Increase>>current consumption increase, so the LP

mode is the best for application that don’t need accurate time.

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Embedded System General Block

Diagram9

PICs Families:-

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Minor differences between PICs Families:

o Power Consumption

o Speed

o Package size

o Memory Capacity

Software Requirements

Proteus.

QL-2006 programmer

MPLAB, MPASM.

MicroC.

FlowCode.

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Data Sheet

PIC 16f84A

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