The 8259A is a Programmable Interrupt Controller (PIC) designed by Intel. It is a 28-pin DIP (Dual In-line Package) integrated circuit.Description:The 8259A is a programmable interrupt controller that is used to manage multiple interrupt requests from peripheral devices in a microprocessor system. It can handle up to eight interrupt requests and can be cascaded to handle up to 64 interrupt requests. It has an 8-bit data bus and a 16-bit address bus. It also has a built-in priority encoder which allows it to prioritize the interrupt requests.Features: 8-bit data bus 16-bit address bus Up to 8 interrupt requests Can be cascaded to handle up to 64 interrupt requests Built-in priority encoder Programmable interrupt vector Edge/level triggered interruptApplication:The 8259A is used in many microprocessor systems to manage multiple interrupt requests from peripheral devices. It is commonly used in embedded systems, industrial control systems, and other applications where multiple interrupt requests need to be handled.(For reference only)
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