SIO1028I-JZX

Specialized Overview

The SIO1028I-JZX is a single-chip LPC I/O device designed for advanced notebook applications. It operates at 3.3V with 5.0V tolerance and complies with PC99, PC01, and ACPI 1.0 standards. The controller features an LPC interface supporting bus frequencies from 19.2MHz to 33MHz. It integrates three full-function serial ports, including two NS16C550A-compatible UARTs with 16-byte FIFOs and one infrared-capable port. The device provides 24 general-purpose input/output pins, two LED drivers, and a watchdog timer. It is housed in a 64-pin QFN package.

Specialized Feature Summary

• Supports LPC bus frequencies up to 33MHz
• Includes three serial ports with IrDA v1.2 compatibility
• Provides 24 general-purpose I/O pins

Specialized Applications

• Advanced notebook I/O designs
• LPC-based embedded systems
• Infrared communication interfaces

Specialized Procurement Notes

Verify the specific suffix 'I' against official Microchip documentation to confirm industrial temperature range specifications. Ensure the JZX package designation matches the required 64-pin QFN footprint. Confirm RoHS compliance status directly through the manufacturer's environmental declarations before finalizing procurement orders.

Specialized Selection Notes

Select this component when designing systems requiring integrated Super I/O functionality via the LPC interface. It is suitable for applications needing multiple serial ports with infrared support and programmable GPIO. Verify that the system architecture supports the specified LPC bus frequency range of 19.2MHz to 33MHz.

Specialized Part Context

This part belongs to the SIO1028 family of Super I/O controllers manufactured by Microchip Technology. The series is designed to replace legacy parallel I/O controllers in modern computing platforms. The JZX suffix specifically denotes the 64-pin QFN package variant within this product line.

Specialized Replacement Considerations

Consult Microchip documentation for direct pin-to-pin replacements or updated revisions within the SIO1028 family. Verify functional equivalence regarding LPC timing and serial port configurations before substituting.