FDC37C65C+LJP

Controllers Overview

The SMSC FDC37C65C+LJP is a Super I/O controller manufactured using CMOS technology, housed in a 100-lead Quad Flat Package (QFP) with a 0.65 mm pin pitch. It operates on a single 5V supply within a 4.5V to 5.5V range and supports commercial temperature conditions from 0°C to 70°C. The device features an 8-bit external data bus and an 11-bit address bus, compatible with ISA bus standards. Its maximum functional clock frequency is 14.32 MHz.

Controllers Feature Summary

• Supports PC98/99 and ACPI 1.0 compliance standards
• Includes intelligent auto power management capabilities
• Features shadowed write-only registers for ACPI compliance

Controllers Applications

• Motherboard embedded controller designs
• ISA bus peripheral integration
• ACPI-compliant system management

Controllers Procurement Notes

Verify the specific suffix +LJP against official SMSC documentation to confirm package variant and tape-and-reel specifications. Ensure the component meets RoHS requirements if applicable, as older SMSC parts may have lead-based variants. Cross-reference the datasheet revision date to confirm register compatibility with current BIOS implementations.

Controllers Selection Notes

Select this component for legacy ISA-based systems requiring integrated Super I/O functions. Verify that the 5V logic level matches the target motherboard voltage rails. Confirm that the 14.32 MHz clock limit satisfies the timing requirements of the connected peripherals and the host processor bus.

Controllers Part Context

This part belongs to the SMSC FDC37C series of multifunction peripherals designed for PC architecture. It integrates standard I/O functions into a single chip, reducing board space compared to discrete logic solutions. The series is characterized by its compatibility with established industry standards for parallel ports and floppy disk controllers.

Controllers Replacement Considerations

The FDC37C665GT is a hardware-compatible alternative within the same family. Verify pin-to-pin compatibility and register set alignment before substitution. Other members of the FDC37C series may offer similar functionality but require verification of specific feature sets and package types.