Q3Microprocessor and Interfaces
Question
10 marks
Explain the interfacing of 8255 PPI with 8085 microprocessor.
Answer
Interfacing 8255 ports A, B, C.
The 8255 is interfaced using the data bus, control signals (RD, WR), and address lines (A0, A1) to select ports or the control register. Chip Select (CS) is generated by decoding higher-order address lines.