Pins of 8259
How does the Intel 8259 expand the interrupt input sources of microprocessors like the Intel 8086 and 8088?
The Intel 8259 can be connected with microprocessors such as the Intel 8086 and 8088 where multiple hardware interrupts from different devices can be connected together into a single interrupt output.
What are the main operational modes of the Intel 8259, and how do they function?
It operates on two modes which are single and cascade mode.In cascade mode multiple 8259 can be connected together which can handle more interrupts while in single mode only one chip is used.
How does the Intel 8259 communicate with the CPU?
Intel 8259 uses various pins to communicate between cpu such as WR* and RD* for writing and reading words, CS* for chip selection, and INTA* for interrupt acknowledgment.
Pins of 8259
In this article, we will go through the Pin diagram of 8259, first we will start our article with the definition of the 8259, then we will go through the pin diagram of 8259 in brief and we will go through each pin. We will go through different pins like Vcc, INT, RD, etc.
Table of Content
- What is 8259?
- Pin Diagram of 8259
- Pin Diagram Description of 8259
- Pins of 8259 – FAQs