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Microcontroller 8051 and its interfacing
The document discusses microcontrollers and interfacing. It begins with definitions of microprocessors and microcontrollers, comparing their differences. It then focuses on the 8051 microcontroller, describing its features, block diagram, manufacturers, and addressing modes. The document outlines how to write programs for the 8051 and discusses real-world interfacing examples like LCDs, ADCs, relays, motors. It concludes with applications of the 8051 and contact information.
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Microcontroller 8051 and its interfacing
- 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 9/21/2012 Er. Mandeep Singh 2
- 3. Topics of Discussion: BlockDiagram of 8051 Manufacturers Pin diagram of 8051 Addressing Modes How to write program Real World Interfacing Simple I/O concept LCD Interfacing 9/21/2012 Er. Mandeep Singh 3
- 4. Topics of Discussion: ADC0804Interfacing Relay Interfacing Stepper Motor Interfacing DC Motor Interfacing Applications of 8051 Queries 9/21/2012 Er. Mandeep Singh 4
- 5. Microprocessor: • Multipurpose • Re-Programmable • Digital Device • Semiconductor IC 9/21/2012 Er. Mandeep Singh 5
- 6. Microprocessor (cont.): • WorksOn: Input data from outer world. Process it under control of stored instructions/program in memory. Provide desired result to the outer world. 9/21/2012 Er. Mandeep Singh 6
- 7. Microprocessor(cont.): 9/21/2012 Er. Mandeep Singh 7
- 8. Microprocessor & HumanBehaviour: 9/21/2012 Er. Mandeep Singh 8
- 9. Microcontroller: Introduced in 1981by 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 9/21/2012 Er. Mandeep Singh 9
- 10. Microprocessor Vs Microcontroller: 9/21/2012 Er. Mandeep Singh 10
- 11. Microcontroller 8051 Features: 9/21/2012 Er. Mandeep Singh 11
- 12. 8051 Block Diagram: 9/21/2012 Er. Mandeep Singh 12
- 13. Manufacturers of 8051: • Intel • Atmel • Phillips • Dallas • Motorola • National • Infineon 9/21/2012 Er. Mandeep Singh 13
- 14. Pin Diagram-8051: 9/21/2012 Er. Mandeep Singh 14
- 15. Addressing Modes: • Immediate Addressing Mode • Direct Addressing Mode • Register Addressing Mode • Register Indirect Addressing Mode • Indexed Addressing Mode 9/21/2012 Er. Mandeep Singh 15
- 16. Addressing Modes (cont.): ImmediateAddressing Mode : • MOV A, #64H • MOV R1, #0FFH Direct Addressing Mode: • MOV A, 64H • MOV A, 0FFH 9/21/2012 Er. Mandeep Singh 16
- 17. Addressing Modes (cont.): RegisterAddressing Mode • MOV A, R0 • MOV R1, A Register Indirect Addressing Mode • MOV A,@R0 • MOV @R1,A 9/21/2012 Er. Mandeep Singh 17
- 18. How to WriteProgram: 9/21/2012 Er. Mandeep Singh 18
- 19. Real World Interfacing: SimpleInput- Output Concept: • Interfacing Switch • Interfacing LED 9/21/2012 Er. Mandeep Singh 19
- 20. LCD Interfacing: 16X2 LCD Module 9/21/2012 Er. Mandeep Singh 20
- 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 9/21/2012 Er. Mandeep Singh 21
- 22. Pin Connections ofLCD: 9/21/2012 Er. Mandeep Singh 22
- 23. Analog Vs Digital: 9/21/2012 Er. Mandeep Singh 23
- 24. ADC Interfacing: 9/21/2012 Er. Mandeep Singh 24
- 25. Relay Interfacing: 9/21/2012 Er. Mandeep Singh 25
- 26. Stepper Motor Interfacing: 9/21/2012 Er. Mandeep Singh 26
- 27. DC Motor Interfacing: 9/21/2012 Er. Mandeep Singh 27
- 28. Applications of 8051: 9/21/2012 Er. Mandeep Singh 28
- 29.
- 30. Contact Details: Er. MandeepSingh 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 9/21/2012 Er. Mandeep Singh 30