FDC37B802QFP

Application Specific Microcontrollers Overview

The SMSC FDC37B802 is a Super I/O controller designed for PC motherboard applications. It integrates a true CMOS 765B floppy disk controller, two 16C550-compatible UARTs, and a multi-mode parallel port with EPP/ECP support. The device operates on a single 5V supply (4.5V to 5.5V) and features an 8-bit external data bus with an 11-bit address bus. It supports a maximum functional clock frequency of 14.32 MHz and is housed in a 100-pin PQFP package.

Application Specific Microcontrollers Feature Summary

• Integrated 765B floppy disk controller with advanced digital data separator
• Two 16C550-compatible UARTs with programmable baud rate generators
• Multi-mode parallel port supporting EPP and ECP protocols
• PC 99 compliant Super I/O architecture

Application Specific Microcontrollers Applications

• IBM PC-XT and PC-AT compatible systems
• PS/2 and ISA bus motherboards
• PCI-based system designs requiring legacy I/O

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'QFP' against official SMSC documentation to confirm the package type and temperature range. Ensure compatibility with existing BIOS implementations for register-level integration. Confirm that the 5V operating voltage aligns with the target system's power rails.

Application Specific Microcontrollers Selection Notes

Select this component when a single-chip solution for legacy I/O is required without external filter components. It is suitable for designs needing software compatibility with the 82077AA core. Consider the 100-pin QFP footprint for board layout constraints.

Application Specific Microcontrollers Part Context

This part belongs to the SMSC Super I/O family, utilizing SuperCell technology. It serves as a peripheral controller replacing discrete logic chips for floppy, serial, and parallel interfaces in standard PC architectures.

Application Specific Microcontrollers Replacement Considerations

Check for direct pin-to-pin replacements within the SMSC FDC37 series. Verify register compatibility if substituting with other Super I/O controllers from different manufacturers.