FDC37C675QFP

Application Specific Microcontrollers Overview

The SMSC FDC37C675QFP is a multifunction peripheral integrated circuit manufactured using CMOS technology. It is housed in a 100-lead Quad Flat Package (QFP) with a 0.65 mm pin pitch. The device operates within a commercial temperature range of 0°C to 70°C and requires a supply voltage between 4.5 V and 5.5 V, with a nominal rating of 5 V. It features an 8-bit external data bus and an 11-bit address bus. The maximum functional clock frequency is specified at 14.32 MHz. This component serves as a system controller for legacy PC architectures.

Application Specific Microcontrollers Feature Summary

• CMOS technology with 100-pin QFP surface-mount package
• ISA bus compatibility supporting IBM PC-XT, IBM PC-AT, PS/2, and PCI standards
• 8-bit external data bus and 11-bit address bus architecture
• Operates on a 5V supply with a maximum clock frequency of 14.32 MHz

Application Specific Microcontrollers Applications

• IBM PC-XT and IBM PC-AT system controllers
• PS/2 personal computer motherboard designs
• ISA bus expansion systems
• Legacy industrial control hardware

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'QFP' against manufacturer documentation to confirm the package type and lead configuration. Ensure that the operating voltage requirements align with the target system's 5V logic levels. Confirm the commercial temperature grade meets environmental specifications. Check for RoHS compliance status if required by current manufacturing regulations.

Application Specific Microcontrollers Selection Notes

Select this component when designing systems requiring ISA bus compatibility or legacy PC support. The 14.32 MHz clock limit defines the maximum operational speed. Consider the 100-pin QFP footprint during PCB layout. Verify that the 4.5V to 5.5V input range matches the power supply design. Compare against the FDC37M61X if different packaging or feature sets are needed.

Application Specific Microcontrollers Part Context

The FDC37C675QFP belongs to the SMSC FDC37 series of multifunction peripherals. These chips integrate super I/O functions, including keyboard/mouse controllers and parallel/serial ports, into a single package. The series was widely used in desktop computers from the late 1990s and early 2000s to manage low-speed peripheral interfaces.

Application Specific Microcontrollers Replacement Considerations

The FDC37M61X is a documented variant within the same family. Verify pin-to-pin compatibility and functional equivalence before substitution. Other members of the FDC37 series may offer similar functionality but require datasheet comparison for interface and timing differences.