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MICROCONTROLLER & ITS
INTERFACING
Er. Mandeep SinghNational Institute of Technical Teachers
Training & Research- Chandigarh
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Topics of Discussion:
Microprocessor
Definition
WorkingMicroprocessor & Human Behaviour
Microcontroller 8051
DefinitionMicroprocessor Vs Microcontroller
8051 Features
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Topics of Discussion:
Block Diagram of 8051
Manufacturers
Pin diagram of 8051Addressing Modes
How to write program
Real World Interfacing Simple I/O concept
LCD Interfacing
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Topics of Discussion:
ADC0804 Interfacing
Relay Interfacing
Stepper Motor InterfacingDC Motor Interfacing
Applications of 8051
Queries
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Microprocessor:
Multipurpose
Re-Programmable
Digital Device Semiconductor IC
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Microprocessor (cont.):
Works On:
Input data from outer world.
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Process it under control of stored
instructions/program in memory.
Provide desired result to the outer
world.
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Microprocessor(cont.):
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Microprocessor & Human Behaviour:
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Microcontroller:
Introduced in 1981 by Intel Corporation.
Microcontroller is a programmable digital processor with
necessary
peripherals.
Both microcontrollers and microprocessors are complex sequential
digital
circuits meant to carry out job according to the program /
instructions.
Swiss Knife
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Microprocessor Vs Microcontroller:
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Microcontroller 8051 Features:
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8051 Block Diagram:
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Manufacturers of 8051:
Intel
Atmel
Phillips Dallas
Motorola
National Infineon
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Pin Diagram-8051:
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Addressing Modes:
Immediate Addressing Mode
Direct Addressing Mode
Register Addressing Mode Register Indirect Addressing Mode
Indexed Addressing Mode
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Addressing Modes (cont.):
Immediate Addressing Mode :
MOV A, #64H
MOV R1, #0FFHDirect Addressing Mode:
MOV A, 64H
MOV A, 0FFH
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Addressing Modes (cont.):
Register Addressing Mode
MOV A, R0
MOV R1, ARegister Indirect Addressing Mode
MOV A,@R0
MOV @R1,A
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How to Write Program:
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Real World Interfacing:
Simple Input- Output Concept:
Interfacing Switch
Interfacing LED
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LCD Interfacing:
16X2 LCD Module
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Pin Description:
Pin Symbol I/O Description
1 Vs - Ground2 Vcc - +5 V
3 VEE - Contrast control
4 RS I Register Select
5 R/W I Read/Write
6 E I/O Enable
7 DB0 I/O 8 bit data bus
8 DB1 I/O 8 bit data bus
9 DB2 I/O 8 bit data bus
10 DB3 I/O 8 bit data bus
11 DB4 I/O 8 bit data bus
12 DB5 I/O 8 bit data bus
13 DB6 I/O 8 bit data bus
14 DB7 I/O 8 bit data bus8/26/2013 21Er. Mandeep Singh
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Pin Connections of LCD:
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Analog Vs Digital:
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ADC Interfacing:
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Relay Interfacing:
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Stepper Motor Interfacing:
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DC Motor Interfacing:
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Applications of 8051:
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?
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Contact Details:
Er. Mandeep Singh
Electrical Engineering Department
National Institute of Technical Teachers Trainingand Research
Sector 26 Chandigarh
Email: [email protected]
Mobile: 8427 00 80519915 72 8051
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mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]
