The PC87307-IBX/VUL is a Super I/O controller, previously manufactured by National Semiconductor and now likely under the ownership of Texas Instruments (TI) due to their acquisition of National Semiconductor. Super I/O controllers are integrated circuits that provide a variety of low-bandwidth peripheral functions in computer systems, including serial ports, parallel ports, floppy disk controllers, keyboard and mouse interfaces, and sometimes infrared (IrDA) communication capabilities. The 'IBX/VUL' likely represents a specific revision or configuration of the chip.

Applications

• Legacy PC systems
• Embedded systems requiring legacy peripheral support
• Industrial control systems
• Single-board computers
• Point-of-sale (POS) systems

Features

• Serial ports (UARTs)
• Parallel port (IEEE 1284)
• Floppy disk controller (FDC)
• Keyboard and mouse controller
• Infrared (IrDA) communication interface (possibly)
• Real-time clock (RTC)
• ISA bus interface

Benefits

• Provides a single-chip solution for multiple legacy peripheral functions
• Reduces component count and board space
• Simplifies system design and integration
• Offers compatibility with legacy hardware and software
• Enables cost-effective solutions for systems requiring specific peripheral interfaces

Additional Details

The PC87307-IBX/VUL Super I/O controller typically connects to the system through the ISA bus. It integrates several commonly used peripheral interfaces into a single chip, reducing the overall complexity and cost of the system. The serial ports provide asynchronous communication capabilities, while the parallel port allows for connection to printers and other parallel devices. The floppy disk controller enables the system to read and write data to floppy disks. The keyboard and mouse controller manages input from these essential devices. The real-time clock provides accurate timekeeping functionality. Due to its age, detailed datasheets for this specific part number may be difficult to obtain. However, general information about Super I/O controllers and the PC87307 family can provide insights into its capabilities. The integration of these functions into a single chip was a common approach in older PC systems to consolidate peripheral control and reduce the number of discrete components. Modern systems have largely moved away from these legacy interfaces, but they are still found in some embedded and industrial applications. Finding the exact specifications and programming details would require accessing archived datasheets or reverse engineering the device's functionality.