FDC37N958FR

Application Specific Microcontrollers Overview

The FDC37N958FR is an Ultra I/O controller by SMSC, housed in a 208-pin TQFP package. It integrates an 8051-based keyboard and power management controller, four PS/2 ports, and a real-time clock. The device includes a shared Flash interface and supports ISA Plug-and-Play. Key peripherals consist of a CMOS 765B floppy disk controller with a 16-byte FIFO, two 16C550A-compatible UARTs, and internal keyboard scanning capabilities. One serial port supports IrDA Ver 1.1 Fast IR compliance via a Synchronous Communications Engine.

Application Specific Microcontrollers Feature Summary

• Integrates an 8051-based keyboard and power management controller
• Includes a true CMOS 765B floppy disk controller with advanced digital data separator
• Features two 16C550A compatible UARTs with one supporting IrDA Ver 1.1 Fast IR
• Provides four PS/2 ports for external keyboard and mouse connectivity

Application Specific Microcontrollers Applications

• System designs requiring parallel port, serial ports, and floppy port integration
• Internal keyboard scan and trackball or mouse input handling
• External PS/2 keyboard and mouse port implementations
• General purpose GPIO applications as defined by system designers

Application Specific Microcontrollers Part Context

The FDC37N958FR belongs to the FDC37 series of Super I/O controllers from SMSC. This series typically provides comprehensive I/O functionality for PC architectures, combining legacy interfaces like floppy and parallel ports with modern standards such as PS/2 and ACPI compliance within a single chip solution.