You can read the content of this class notes ( 8255 Programmable Peripheral Interface IC – pdf download ) as an embedded pdf. Also, you can download this pdf file from the given link.
The course material covers:
- Functional description of Pins
- Programming the PPI
- Modes of Operation
- Interfacing with 8085
8255 Programmable Peripheral Interface (PPI) – PDF notes download
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8255 Programmable Peripheral Interface (PPI) – PDF download