LPC47N267-MN

Specialized Overview

The LPC47N267-MN is a Super I/O controller designed for notebook computer input/output functions. It operates at 3.3 Volts with 5V tolerance and features an X-Bus interface supporting up to four external components. The device includes two full-function serial ports compatible with NS16C550 UARTs, 29 general-purpose I/O pins, and four IRQ input pins. It supports programmable wakeup events via the IO_PME# pin and System Management Interrupts via the IO_SMI# pin. The component is housed in a 100-pin STQFP package.

Specialized Feature Summary

• Integrated X-Bus interface for connecting multiple external peripheral components with write protection capabilities.
• Dual high-speed serial ports providing full functionality with NS16C550 compatibility.
• Support for system management interrupts and programmable wakeup events for power management.

Specialized Applications

• Notebook computer input/output control
• System I/O controller integration
• Peripheral expansion via X-Bus interface

Specialized Procurement Notes

Verify the manufacturer designation carefully, as some listings incorrectly attribute this SMSC part to All Sensors. Confirm the specific suffix matches the required package and temperature grade. Ensure the source document explicitly identifies the component as an SMSC LPC47N267 series device to avoid confusion with similar naming conventions from other vendors.

Specialized Selection Notes

Select this component for designs requiring a dedicated Super I/O solution with X-Bus expansion capabilities. It is suitable for systems needing integrated serial communication and GPIO management without additional discrete controllers. Verify that the 3.3V operation aligns with the system voltage requirements and that the 100-pin package fits the board layout constraints.

Specialized Part Context

The LPC47N267 is part of the LPC47 family of Super I/O controllers produced by Standard Microsystems Corp (SMSC). These devices are typically used to consolidate legacy I/O functions in computing platforms. The -MN suffix indicates the specific package type and thermal rating, distinguishing it from other variants in the same functional family.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers for the LPC47N267-MN are not available in the provided documentation. Evaluation of alternative Super I/O controllers requires detailed pinout and feature comparison against the original specification sheet.