Microcontroller AtoZ

1. MICROCONTROLLER & ITS
INTERFACING
Er. Mandeep Singh
National Institute of Technical Teachers
Training & Research- Chandigarh

2. Topics of Discussion:
 Microprocessor
Definition
Working
Microprocessor & Human Behaviour
Microcontroller 8051
Definition
Microprocessor Vs Microcontroller
8051 Features
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3. Topics of Discussion:
Block Diagram of 8051
Manufacturers
Pin diagram of 8051
Addressing Modes
How to write program
Real World Interfacing
 Simple I/O concept
LCD Interfacing
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4. Topics of Discussion:
ADC0804 Interfacing
Relay Interfacing
Stepper Motor Interfacing
DC Motor Interfacing
Applications of 8051
Queries
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5. Microprocessor:
• Multipurpose
• Re-Programmable
• Digital Device
• Semiconductor IC
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6. Microprocessor (cont.):
• Works On:
Input data from outer world.
Process it under control of stored
instructions/program in memory.
Provide desired result to the outer
world.
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7. Microprocessor(cont.):
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8. Microprocessor & Human Behaviour:
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9. 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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10. Microprocessor Vs Microcontroller:
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11. Microcontroller 8051 Features:
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12. 8051 Block Diagram:
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13. Manufacturers of 8051:
• Intel
• Atmel
• Phillips
• Dallas
• Motorola
• National
• Infineon
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14. Pin Diagram-8051:
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15. Addressing Modes:
• Immediate Addressing Mode
• Direct Addressing Mode
• Register Addressing Mode
• Register Indirect Addressing Mode
• Indexed Addressing Mode
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16. Addressing Modes (cont.):
Immediate Addressing Mode :
• MOV A, #64H
• MOV R1, #0FFH
Direct Addressing Mode:
• MOV A, 64H
• MOV A, 0FFH
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17. Addressing Modes (cont.):
Register Addressing Mode
• MOV A, R0
• MOV R1, A
Register Indirect Addressing Mode
• MOV A,@R0
• MOV @R1,A
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18. How to Write Program:
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19. Real World Interfacing:
Simple Input- Output Concept:
• Interfacing Switch
• Interfacing LED
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20. LCD Interfacing:
16X2 LCD Module
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21. Pin Description:
Pin Symbol I/O Description
1 Vs - Ground
2 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 bus
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22. Pin Connections of LCD:
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23. Analog Vs Digital:
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24. ADC Interfacing:
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25. Relay Interfacing:
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26. Stepper Motor Interfacing:
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27. DC Motor Interfacing:
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28. Applications of 8051:
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29. ?

30. Contact Details:
Er. Mandeep Singh
Electrical Engineering Department
National Institute of Technical Teachers Training
and Research Sector 26 Chandigarh
Email: mandeep1708@yahoo.co.in
Mobile: 8427 00 8051
9915 72 8051
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