LPC47N207-JV

Specialized Overview

The Microchip Technology LPC47N207-JV is a Super I/O controller designed for PC99 and ACPI 1.0 compliant systems, operating at 3.3V with 5V tolerance. It integrates an LPC Bus Host Interface featuring the LPC PortSwitch interface for hot-docking support, alongside a Serial IRQ interface compatible with PCI nCLKRUN. The device includes one full-function 16C550A-compatible UART with 16-byte FIFOs supporting up to 460k baud, and a second infrared serial port compliant with IrDA v1.2 (Fast IR), HPSIR, and ASKIR standards. It provides 16 GPIOs with programmable pull-ups, two IRQ inputs, and Software Configurable Logic.

Specialized Feature Summary

• Hot-switchable external docking LPC interface via LPC PortSwitch
• Dual serial communication capabilities including a standard UART and an IrDA-compliant infrared port
• Integrated power management features supporting multiple low-power down modes
• Programmable system configuration through Software Configurable Logic

Specialized Applications

• PC99 and ACPI 1.0 compliant desktop and laptop platforms
• Systems requiring hot-swappable docking station connectivity
• Infrared communication interfaces for PDAs and consumer devices

Specialized Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheets. Confirm package integrity for the 64-pin STQFP lead-free RoHS compliant variant. Ensure compatibility with existing system BIOS configurations regarding ISA Plug-and-Play register sets. Validate electrical specifications match design requirements before integration.

Specialized Selection Notes

Select this component for applications necessitating integrated infrared communication alongside standard serial ports. Consider the LPC PortSwitch feature if hot-docking functionality is required. Verify that the 3.3V operation aligns with the target system's voltage rails. Evaluate the need for Software Configurable Logic to simplify hardware design constraints.

Specialized Part Context

This component belongs to the SMSC LPC47N series of Super I/O controllers. It specifically addresses the need for integrated infrared and serial communication in legacy and modern PC architectures. The part bridges the gap between standard LPC bus interfaces and specialized peripheral requirements like hot-docking and IrDA protocols.

Specialized Replacement Considerations

Consult official Microchip or SMSC documentation for direct pin-to-pin replacements. Verify functional equivalence regarding LPC PortSwitch and IrDA support when evaluating alternatives.