FDC37C957FRTQFP

Application Specific Microcontrollers Overview

The SMSC FDC37C957FRTQFP is a multifunction peripheral controller designed for portable applications, operating on a single 5V supply. It integrates Ultra I/O functionality within a 100-pin TQFP package. The device supports ISA bus compatibility with an 8-bit external data bus and an 11-bit address bus. Key electrical specifications include a maximum clock frequency (FCLK) of 14.32 MHz and a commercial temperature range from 0°C to 70°C. It features intelligent auto power management and complies with PC98/99 and ACPI 1.0 standards.

Application Specific Microcontrollers Feature Summary

• Ultra I/O Controller optimized for portable system applications
• ISA Plug-and-Play compatible register set with shadowed write-only registers for ACPI compliance
• Intelligent Auto Power Management capabilities
• Supports PC98/99 and ACPI 1.0 standards

Application Specific Microcontrollers Applications

• Portable computer systems requiring low-power I/O control
• ISA-based embedded controllers
• ACPI-compliant motherboard designs

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'TQFP' against official SMSC documentation to confirm the plastic quad flat pack package variant. Ensure the part number matches the exact revision required for your design, as manufacturing updates may affect pinout or electrical characteristics. Cross-reference with current datasheets to confirm availability status.

Application Specific Microcontrollers Selection Notes

Select this component when designing portable systems that require integrated Super I/O functions with strict power management requirements. It is suitable for replacing legacy discrete I/O logic in ISA-compatible architectures. Verify that the 5V operation voltage aligns with the target system's power rails and that the 100-pin TQFP footprint fits the PCB layout constraints.

Application Specific Microcontrollers Part Context

This component belongs to the SMSC FDC37C series of Enhanced Super I/O Controllers. It shares architectural similarities with models like the FDC37C672 but is specifically tailored for portable applications with enhanced power management features. The series represents SMSC's solution for consolidating serial ports, parallel ports, and floppy disk controller functions into a single chip.

Application Specific Microcontrollers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineering changes should be validated by consulting the manufacturer's latest replacement guide or equivalent functional alternatives with matching pinouts and electrical specifications.