LPC47N207-JN

Overview

The SMSC LPC47N207-JN is a Super I/O controller designed for PC systems, supporting the Low Pin Count (LPC) interface. It operates at 3.3V with 5V-tolerant inputs and complies with PC99, PC2001, and ACPI 2.0 standards. The device integrates two serial ports, including a 16C550A-compatible UART with 16-byte FIFOs, and an infrared communications controller. It features a multi-mode parallel port with EPP/ECP support and ChiProtect circuitry. Additional resources include 14 GPIO pins, programmable wake-up events, system management interrupt support, intelligent auto power management, and three DMA channel options.

Feature Summary

• Integrates a high-speed 16C550A compatible UART with 16-byte send/receive FIFOs and supports baud rates up to 460k.
• Includes a multi-mode parallel port compliant with IEEE 1284 standards, featuring EPP 1.7/1.9 and ECP modes with ChiProtect damage prevention.
• Supports infrared communications via IrDA v1.2, HPSIR, ASKIR, and Consumer IR protocols.
• Provides intelligent auto power management and programmable wake-up event interfaces for system energy efficiency.

Applications

• Personal computer motherboard embedded controllers
• Industrial control systems requiring serial and parallel I/O
• Infrared communication modules in consumer electronics

Procurement Notes

Verify the exact suffix against the manufacturer's current datasheet to confirm package type and RoHS compliance status. Ensure the component matches the specific LPC interface requirements of the target design. Cross-reference pin assignments with the official documentation to avoid compatibility issues during integration.

Selection Notes

Select this component when a low-pin-count interface is required to replace legacy ISA buses while maintaining full backward compatibility. It is suitable for designs needing integrated serial, parallel, and infrared capabilities without additional external controllers. Consider the 3.3V operation and 5V tolerance for standard logic level interfacing.

Part Context

This part belongs to the SMSC LPC47N series of Super I/O controllers. These devices are engineered to consolidate multiple legacy I/O functions into a single chip, reducing board space and complexity. The LPC interface allows for significant pin count reduction compared to traditional ISA implementations while delivering comparable performance.

Replacement Considerations

Check for direct replacements within the LPC47N family, such as the LPC47N217-JN, which shares similar feature sets. Verify pin-to-pin compatibility and register-level software compatibility before substitution. Confirm that any alternative meets the same ACPI and PC99/PC2001 compliance standards.