LPC47N217-JV

Specialized Overview

The LPC47N217-JV is a Super I/O controller designed for PC99, PC2001, and ACPI 2.0 compliant systems. It operates at 3.3V with 5V tolerant inputs and features an LPC bus interface supporting frequencies from 19.2 MHz to 33 MHz. The device integrates a full-function serial port with a 16C550A compatible UART featuring 16-byte FIFOs and baud rates up to 460k. It includes one multi-mode parallel port with EPP/ECP support and ChiProtect circuitry, plus an infrared communications controller compliant with IrDA v1.2. Additional resources include 14 GPIO pins, two IRQ input pins, and three DMA channel options.

Specialized Feature Summary

• LPC Bus Host Interface: Supports multiplexed command, address, and data buses with 8-bit transfers and PCI CLKRUN# capability.
• Serial Port Integration: Includes a high-speed UART compatible with the 16C550A standard, featuring programmable baud rate generation and modem control circuitry.
• Parallel Port Capabilities: Offers a multi-mode parallel port supporting IBM PC/XT, PC/AT, PS/2, EPP 1.7/1.9, and IEEE 1284 ECP modes with printer power-on protection.
• Infrared Communications: Dedicated Serial Infrared interface supporting IrDA v1.2 (Fast IR), HPSIR, ASKIR, and Consumer IR formats.

Specialized Applications

• Desktop and embedded PC system designs requiring legacy I/O integration
• Industrial control systems utilizing serial and parallel communication protocols
• Consumer electronics incorporating infrared remote control interfaces

Specialized Procurement Notes

Verify the specific ordering suffix against Microchip documentation to confirm package type and tape-and-reel availability. Confirm RoHS compliance status through official datasheets or environmental reports before procurement. Ensure compatibility with existing system voltage levels and LPC bus timing requirements during component sourcing.

Specialized Selection Notes

Select this component for applications requiring a pin-reduced ISA interface alternative via the LPC bus. Evaluate the need for integrated legacy ports such as UART and Parallel against external controller alternatives. Consider the software configurable logic (SCL) capabilities for flexible system configuration of key functions like port mapping and interrupt assignments.

Specialized Part Context

The LPC47N217 belongs to Microchip's Super I/O family, succeeding previous SMSC designs in this category. It provides a consolidated solution for managing legacy I/O peripherals in modern low-pin-count architectures. The device replaces discrete interface controllers by integrating serial, parallel, and infrared functions into a single 64-pin package.

Specialized Replacement Considerations

Check Microchip documentation for direct silicon replacements within the LPC47N series. Verify pinout compatibility and register mapping if substituting with other Super I/O controllers. Ensure that any alternative component supports the required LPC bus frequency range and ACPI standards.