LPC47B377QFP

Overview

The SMSC LPC47B377QFP is a Super I/O controller designed for the LPC bus interface. It integrates multiple peripheral functions into a single chip, housed in a 100-pin Quad Flat Package (QFP) with a 0.65 mm pitch. The device operates on a nominal 5 V supply, with a valid range of 4.5 V to 5.5 V. It supports an external data bus width of 8 bits and utilizes an 11-bit address bus. The component is manufactured using CMOS technology and is rated for commercial temperature ranges between 0°C and 70°C. The maximum functional clock frequency is specified at 14.32 MHz.

Feature Summary

• Integrates Super I/O functionality compatible with the LPC bus standard
• Provides multifunction peripheral capabilities within a compact QFP100 package
• Supports standard 8-bit external data bus architecture

Applications

• System management in personal computers
• Embedded control systems requiring Super I/O integration
• Industrial controllers utilizing LPC bus interfaces

Procurement Notes

Verify the specific suffix and package variant against the manufacturer's current datasheet to ensure compatibility with your system design. Confirm that the component meets the required commercial temperature specifications and voltage levels before integration. Cross-reference the part number with official Microchip or legacy SMSC documentation to validate authenticity and revision status.

Selection Notes

Select this component when an LPC bus-compatible Super I/O controller is required for system management tasks. Ensure the host system supports the 8-bit data bus and 11-bit address bus configuration. Verify that the 5 V power supply constraints align with the target application's power delivery network and thermal environment.

Part Context

This component belongs to the SMSC LPC47B series of Super I/O controllers. These devices are designed to replace legacy ISA peripherals by providing similar functionality over the more modern Low Pin Count (LPC) interface. The series typically includes hardware monitoring, keyboard/mouse controller, and serial port emulation features integrated into a single package.

Replacement Considerations

Consult official substitution guides for equivalent Super I/O controllers from Microchip or other manufacturers. Verify pinout compatibility and register-level software compatibility before replacing the component with alternative part numbers.