8051 microcontroller training (sahil gupta 9068557926)

1,166 views

Published on

Training PPT on 8051 microcontroller

Published in: Education, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,166
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
108
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide
  • Intel’s x86: 8086,8088,80386,80486, Pentium Motorola’s 680x0: 68000, 68010, 68020,68030,6040
  • versatility 多用途的 : any number of applications for PC
  • Program is to read data from P0 and then send data to P1
  • 8051 microcontroller training (sahil gupta 9068557926)

    1. 1. PRESENTATION ON
    2. 2. Why do we need to learn Microprocessors/controllers?  The microprocessor is the core of computer systems.  Nowadays many communication, digital entertainment, portable devices, are controlled by them.  A designer should know what types of components he needs, ways to reduce production costs and product reliable.
    3. 3. The necessary tools for a microprocessor/controller  CPU: Central Processing Unit  I/O: Input /Output  Bus: Address bus & Data bus  Memory: RAM & ROM  Timer  Interrupt  Serial Port  Parallel Port
    4. 4. CPU General- Purpose Micro- processor RAM ROM I/O Port Timer Serial COM Port Data Bus Address Bus General-Purpose Microprocessor System Microprocessors:  CPU for Computers  No RAM, ROM, I/O on CPU chip itself  Example : Intel’s x86, Motorola’s 680x0 Many chips on mother’s board General-purpose microprocessor
    5. 5. RAM ROM I/O Port Timer Serial COM Port Microcontroller CPU  A smaller computer  On-chip RAM, ROM, I/O ports...  Example : Motorola’s 6811, Intel’s 8051, Zilog’s Z8 and PIC 16X A single chip Microcontroller :
    6. 6. Microprocessor  CPU is stand-alone, RAM, ROM, I/O, timer are separate  designer can decide on the amount of ROM, RAM and I/O ports.  expensive  versatility  general-purpose Microcontroller • CPU, RAM, ROM, I/O and timer are all on a single chip • fix amount of on-chip ROM, RAM, I/O ports • for applications in which cost, power and space are critical • single-purpose Microprocessor vs. Microcontroller
    7. 7. 1. meeting the computing needs of the task efficiently and cost effectively • speed, the amount of ROM and RAM, the number of I/O ports and timers, size, packaging, power consumption • easy to upgrade • cost per unit 1. availability of software development tools • assemblers, debuggers, C compilers, emulator, simulator, technical support 1. wide availability and reliable sources of the microcontrollers. Three criteria in Choosing a Microcontroller
    8. 8. Block Diagram CPU On-chip RAM On-chip ROM for program code 4 I/O Ports Timer 0 Serial PortOSC Interrupt Control External interrupts Timer 1 Timer/Counter Bus Control TxD RxDP0 P1 P2 P3 Address/Data Counter Inputs
    9. 9. Pin Description of the 8051Pin Description of the 8051 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 P1.0 P1.1 P1.2 P1.3 P1.4 P1.5 P1.6 P1.7 RST (RXD)P3.0 (TXD)P3.1 (T0)P3.4 (T1)P3.5 XTAL2 XTAL1 GND (INT0)P3.2 (INT1)P3.3 (RD)P3.7 (WR)P3.6 Vcc P0.0(AD0 )P0.1(AD1) P0.2(AD2 )P0.3(AD3) P0.4(AD4) P0.5(AD5) P0.6(AD6) P0.7(AD7) EA/VPP ALE/PROG PSEN P2.7(A15) P2.6(A14 )P2.5(A13 )P2.4(A12 )P2.3(A11 )P2.2(A10) P2.1(A9) P2.0(A8) 8051 (8031)
    10. 10. Pins of I/O Port  The 8051 has four I/O ports Port 0 ( pins 32-39 ): P0 ( P0.0 ~ P0.7 ) Port 1 ( pins 1-8 ) : P1 ( P1.0 ~ P1.7 ) Port 2 ( pins 21-28 ): P2 ( P2.0 ~ P2.7 ) Port 3 ( pins 10-17 ): P3 ( P3.0 ~ P3.7 ) Each port has 8 pins. ○ Named P0.X ( X=0,1,...,7 ) , P1.X, P2.X, P3.X ○ Ex : P0.0 is the bit 0 ( LSB ) of P0 ○ Ex : P0.7 is the bit 7 ( MSB ) of P0 ○ These 8 bits form a byte.  Each port can be used as input or output (bi- direction).
    11. 11.  RAM memory space allocation in the 8051 7FH 30H 2FH 20H 1FH 17H 10H 0FH 07H 08H 18H 00H Register Bank 0 )Stack) Register Bank 1 Register Bank 2 Register Bank 3 Bit-Addressable RAM Scratch pad RAM
    12. 12. Stack in the 8051  The register used to access the stack is called SP (stack pointer) register.  The stack pointer in the 8051 is only 8 bits wide, which means that it can take value 00 to FFH. When 8051 powered up, the SP register contains value 07. 7FH 30H 2FH 20H 1FH 17H 10H 0FH 07H 08H 18H 00H Register Bank 0 )Stack) Register Bank 1 Register Bank 2 Register Bank 3 Bit-Addressable RAM Scratch pad RAM
    13. 13. Interrupts  Interrupt is an internal or external event that suspends a program and transfers the control to an event handler or ISR to handle the event.  After the service is over the control is back to the suspended program to resume the execution, The microcontroller in a embedded system connects many devices and need to handle service requests from devices all the time.
    14. 14. Interrupt :
    15. 15. Interrupt Enable r :  EA : Global enable/disable.  --- : Undefined.  ET2 :Enable Timer 2 interrupt.  ES :Enable Serial port interrupt.  ET1 :Enable Timer 1 interrupt.  EX1 :Enable External 1 interrupt.  ET0 : Enable Timer 0 interrupt.  EX0 : Enable External 0 interrupt.
    16. 16. SEVEN SEGMENT DISPLAY  The seven elements of the display can be lit in different combinations to represent the Arabic numerals.  In a simple LED package, typically all of the cathodes (negative terminals) or all of the anodes (positive terminals) of the segment LEDs are connected and brought out to a common pin; this is referred to as a "common cathode" or "common anode" device.  Multiple-digit LED displays as used in pocket calculators and similar devices used multiplexed displays to reduce the number of I/O pins required to control the display. . .
    17. 17. INTERFACING OF SEVEN SEGMENT DISPLAY WITH 8051 . .
    18. 18. LIQUID CRYSTAL DISPLAY  A liquid crystal display (LCD) is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals. Liquid crystals do not emit light directly.  Each pixel of an LCD typically consists of a layer of molecules aligned between two transparent electrodes, and two polarizing filters, the axes of transmission of which are (in most of the cases) perpendicular to each other. . .
    19. 19. INTERFACING OF LCD WITH 8051
    20. 20. Applications in Industry  Telecom  Automotive applications  Domestic applications  Robotics  Aerospace applications  Medical equipment  Defense systems
    21. 21. THANKYOU ANYANY QUESTIONS?QUESTIONS?

    ×