Multifunction MCS 51 board

Τίτλος

Multifunction MCS 51 board

Θέμα

Intel 8051 (Microcontroller)

Microcontrollers

Δημιουργός

Papapetrou, Chrysanthos

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1998

Συνεισφέρων

Theopemptou, C.

Alexandrou, A.

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

EED0608

Σύνοψη

The general objectives of this project are:
• to investigate the various types of microprocessors manufactured by Intel under their MCS51 brand series
• to investigate the various types of microprocessors manufactured by others such as Philips with compatibility and added features as that the Intel MCS51
• to select the appropriate microprocessor for use at H.T.I
• to investigate the types of possible solutions for a general purpose board and the facilities that are normally offered.
• to investigate the possibilities of programming these microprocessors in the laboratories of H.T.I
• to design, construct, build and test a general purpose MCS 51 based board that is easy to construct at low cost and provide all the basic features of a multifunction board.
• to provide some basic software to aid in the use of the board in the form of a simple BTOS.
• to provide a testing set-up to prove the functionality of the board.
• to provide utilities and resources for assisting the development of MCS 51 based
solutions.
The main objective of this project was to construct a general purpose multifunction board. An 8051 microcontroller has been selected among the family of MCS 51 series because it has the best features for the purpose it is aimed for and it has a low cost. It has four 8-bit I/O ports. Two of them combined make a 16-bit address, which control the EPROM, the RAM and two 8255 Programmable Peripheral Interface. The two 8255 PPIs increase the number of ports to six. The 8051 microcontroller has also a serial port which in combination with MAX232 can serve for serial communication.
In order to test the multifunction board, basic software in assembly language has been developed. Originally the microcontroller was programmed for output operation only but the output could be monitored by an oscilloscope. In order to make the output visible a delay subroutine was introduced between the commands. Finally, by using input commands the output was displayed with the aid of light emitting diods (LEDs).
The construction of the general purpose board was successfully completed and tested
The multifunction board can be used in various control applications. Its main advantages is the low cost of its components and the diversity of its uses.