SIO1028I-JZX-TR

Specialized Overview

The SIO1028I-JZX-TR 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 component features an LPC interface supporting bus frequencies from 19.2MHz to 33MHz. It integrates three full-function serial ports, including two high-speed NS16C550A compatible UARTs with 16-byte FIFOs and one port with infrared capabilities. Additional resources include 24 general-purpose I/O pins, two LED drivers, a watchdog timer, and support for Serial IRQ and programmable wake-up events. The device is housed in a 64-pin QFN package.

Specialized Feature Summary

• Integrates three serial ports, including two standard UARTs and one with infrared communication support
• Provides 24 general-purpose input/output pins and dual LED drivers with blinking options
• Supports Low Pin Count (LPC) bus interface with Serial IRQ compatibility
• Includes system management interrupt and programmable wake-up event interfaces

Specialized Applications

• Advanced notebook computer designs requiring LPC connectivity
• Systems needing multiple serial communication interfaces with infrared capability
• Embedded controllers requiring general-purpose I/O expansion and power management interrupts

Specialized Procurement Notes

Verify the specific suffix 'I' indicates the industrial temperature range variant when sourcing. Confirm that the '-TR' suffix corresponds to the tape and reel packaging option as defined in the product identification system. Ensure the ordering documentation explicitly references the JZX package designation for the 64-pin QFN form factor to match hardware layout requirements.

Specialized Selection Notes

Select this component for designs utilizing the LPC bus architecture rather than legacy Super I/O buses. Consider the integrated infrared controller if consumer IR or IrDA v1.2 functionality is required on one of the serial ports. Evaluate the 24 GPIO count against system pin availability needs. Verify that the 3.3V operating voltage aligns with the target platform's logic levels.

Specialized Part Context

The SIO1028 serves as a peripheral controller within Microchip's portfolio of embedded control solutions. It replaces older discrete I/O components by consolidating serial, GPIO, and infrared functions into a single chip. The device supports ACPI standards for modern power management, making it suitable for portable computing platforms where space and power efficiency are critical design constraints.

Specialized Replacement Considerations

Check for updated revisions of the SIO1028 family or newer LPC I/O controllers from Microchip that offer enhanced feature sets. Verify pin-to-pin compatibility if substituting with other 64-pin QFN devices. Review errata sheets for any silicon revisions affecting register mapping or timing characteristics.