SCH5027E-NW

Specialized Overview

The SCH5027E-NW is a Super I/O controller manufactured by Microchip Technology, housed in a 128-pin QFP package. It operates at 3.3V with a 5V-tolerant Super I/O block and supports an LPC interface. The device integrates hardware monitoring for temperature, voltage, and fan speed, featuring two remote thermal diode inputs, internal ambient sensing, and PECI processor temperature retrieval. It includes five PWM outputs and six fan tachometer inputs for automatic fan control. Legacy functionality comprises an 8042 keyboard/mouse controller, IEEE 1284 parallel port, two high-speed UARTs, an IrDA port, and a CMOS 765B floppy disk controller. The operating temperature range is 0°C to +70°C.

Specialized Feature Summary

• Integrated hardware monitoring with SMBus access for temperature, voltage, and fan speed management
• Supports PECI interface for processor communication and wake-up signaling
• Includes motherboard glue logic for power management and system reset generation
• Provides comprehensive legacy I/O including keyboard, mouse, parallel, serial, and floppy controllers

Specialized Applications

• Desktop and server motherboard systems requiring Super I/O integration
• Hardware monitoring solutions utilizing PECI for processor thermal data
• Legacy peripheral interfaces such as PS/2 keyboards and floppy drives

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm packaging options. The standard designation indicates tray packaging, while alternative suffixes may denote tape and reel configurations. Ensure compatibility with the target system's LPC bus requirements and 3.3V operation constraints before procurement.

Specialized Selection Notes

Select this component for designs requiring a consolidated Super I/O solution with integrated hardware monitoring capabilities. Verify that the system architecture supports the LPC interface and 3.3V logic levels. Consider the pin count and package size when designing the PCB layout, ensuring adequate clearance for the 128-pin QFP footprint.

Specialized Part Context

This device belongs to Microchip's Super I/O family, designed to replace discrete legacy controller chips on modern motherboards. It consolidates multiple input/output functions into a single integrated circuit, reducing board space and simplifying design complexity while maintaining compatibility with established PC standards.

Specialized Replacement Considerations

SCH5027D-NW

Specialized FAQ

Does the SCH5027E support processor temperature monitoring via PECI?

Yes, the device supports PECI REQUEST# and AVAILABLE signaling to retrieve processor temperatures from external processors implementing the PECI interface.

What is the operating voltage range for the SCH5027E?

The device operates at 3.3V, with the Super I/O block being 5V tolerant.

How many fan tachometer inputs are available on the SCH5027E?

The SCH5027E provides six fan tachometer inputs for monitoring fan speeds.