PC87381 Legacy-Reduced SuperI/O with Fast Infrared Port, Serial Port and GPIOs

The Winbond PC87381, a member of the LPC SuperI/O family, is targeted for legacy-reduced ultra-light portable applications.
It is PC2001 and ACPI compliant, and features a Fast Infrared port (FIR, IrDA 1.1 compliant), Serial Port and General-Purpose Input/Output (GPIO) support for a total of 11 ports.

The PC87381 minimizes the number of legacy devices on the motherboard, thus taking another step towards a legacy-free PC.

• LPC bus interface, based on Intel’s LPC Interface Specification Revision 1.1, August 2002 (supports CLKRUN# and LPCPD# signals)
• PC2001 and ACPI Revision 3.0 compliant
• Fast Infrared port
• Serial IRQ support
• Protection features, including GPIO lock and pin configuration lock
• 11 GPIO ports including six with “assert IRQ” capability
• Two testability modes (XOR Tree and TRI-STATE® pins)
• 5V tolerant and back-drive protected pins (except LPC bus pins)
• 48-pin LQFP package