Microprocessors And Microcontrollers (Practical)

Transcription

1 Microprocessors And Microcontrollers (Practical) Semester : 4 th, 5 th (TL, ES) Course Code : ES256, ES313 By: Dr. Attiya Baqai Assistant Professor, Department of Electronics, MUET.

2 Hello! I am Attiya Baqai I am here because I love to teach this subject. You can find me at attiya.baqai@faculty.muet.edu.pk Office: Research Lab-1 IIT Building, MUET

3 Devices for Microprocessor System Module E16/ EV 1 Introduction to Module E16/EV and its usage Semester : 4 th, 5 th (TL, ES) Course Code : ES256, ES313 By: Dr. Attiya Baqai Assistant Professor, Department of Electronics, MUET.

4 Learning Concepts Data Bus and addresses Address decoding Data reading and writing on RAM memory Data reading from E²PROM Data input/output (latch and bidirectional transceiver) Data transfer between digital and analog environment via A/D and D/A converters

5 Hardware components RAM K EPROM K Address decoder---2 to 4 A/D & D/A 8-bit converter Latch I/O buffer Bi-directional transceiver Thumbwheel switches

6

7 Address decoder

8 Address Decoding

9 Checking Data Connect power supply Lower right the switch to input Set the I/O switch to input and then to NOP. Set the address to 000H with pre selectors. Set any data item with DATA pre selectors. Turn central switch to I/O and then to NOP. stored in DATA REGISTER?. Modify the set data item & repeat previous operation.

10 Reading & Writing RAM

11 Reading RAM Power on the module Set the address to 000H with pre selectors. Set any data item with DATA pre selectors. Turn central switch to I/O and then to NOP. stored in DATA REGISTER?. Set MEM switch to NOP Turn the MEM to READ. Set the addresses 800H on address pre selectors. Turn central switch to MEM

12 Reading RAM Check RAM is selected (CS signal) Read the data on LEDs D0-D7

13 Writing data in RAM $800 Connect power supply Load data in CPU register Set central switch to NOP. Set address &800. Set MEM switch to WRITE & central switch to MEM. Check the number on Address LEDs. Turn central switch to MEM and again to NOP. Check new data is stored in DATA REGISTER

14 Reading data from EPROM Power on the module. Set central switch to NOP. Set the address to 000H with pre selectors. Set the central switch to MEM. Check EEPROM is selected,(cs signal) Read data item in binary on LEDs D0-D7 Set central switch to NOP. Increment address by 1 using address pre selectors. Turn central switch to MEM and read data on DATA REGISTER.

15 Reading data from EPROM S.No Address Contents S.No Address Contents 1 000E 2 000F Q.1: Fill Table.1 by reading the data starting from 0000H to 001F. Q.2: Can you determine which code conversion this table is performing? Q.3 How can you develop a Hex to Capital ASCII convertor using a lookup table. Describe with the help of developing a new lookup table. Table.1

16 Digital to Analog Converter

17 Digital to Analog Converter Fill the table Connect the digital MM to the op of converter (20 V d.c f.s) Power on the module. Set data item via DATA pre selectors. Set the address to 000H enabling bidirectional Transceiver. Turn I/O switch to INPUT. Turn central switch to IO and then to NOP. Check DATA REGISTER.

18 Digital to Analog Converter Set address to 001 (enabling LATCH) Turn I/O switch to OUTPUT and turn MEM-IO switch to IO. Check the corresponding voltage using Millimeter. Transcribe the data on table from 00H to FFH. Transcribe results on Graph (X-axis Hex value, Y-axis Voltage)

19 Digital to Analog Converter S.No Digital Pattern (binary) Digital Pattern(Hex) Analog Voltage (V) Table FF

20 Analog to Digital Converter Input of Analog data on bus through A/D converter and bidirectional transceiver

21 Analog to Digital Converter Power on the module. Power on the analog input generator, without connecting i/p terminals. Set i/p voltage < 8V then switch on the generator. Turn I/O switch to INPUT and input selector to A/D converter. turn MEM-I/O to I/O, check DATA REGISTER. Transcribe the input value and the obtained digital number on Table.3 Plot a graph

22 Table.3 Analog to Digital Converter S.No 1 0V Analog Voltage Digital Pattern (binary) Digital Pattern(Hex) 2 1V 3 2V 4 3V 5 4V 6 5V 7 6V 8 7V

23 Thanks! Any questions?