The SCH5017 is a 3.3V (Super I/O Block is 5V tolerant) PC99/PC2001 compliant Super I/O controller with an LPC interface. It includes Hardware Monitoring capabilities, enhanced Security features, Power Control logic and Motherboard Glue logic.

Provides support for monitoring two external temperatures via thermal diode inputs and an internal sensor for measuring ambient temperature and allows for a two- or three-piece linear fan function. Complete legacy Super I/O functionality including a floppy disk controller with SMSC's true CMOS (Complementary Metal-Oxide-Semiconductor) 765B core and enhanced digital data separator are incorporated. The true CMOS 765B core provides 100% compatibility with IBM PC/XTTM and PC/ATTM architectures and is software and register compatible with SMSC's proprietary 82077AA core. Additionally, it supports multiple low power-down modes and incorporates sophisticated power control circuitry.

Family parts
SCH5017-NW

• 8042 Keyboard Controller
• 128 QFP Packaging
• Legacy I/O
• 25 GPIO Pins
• 32 byte Security Key Register
• μController Fan Control Engine
• PCH Temperature monitoring
• SMBus Interface
• Glue logic
• IEEE 1284, EPP, and ECP Compatible Parallel Port
• One 16C550A UART-compatible serial port
• One IrDA 1.0 Infrared Port
• 5 PWM Outputs
• 6 fan tachometer inputs
• ACPI 1.0/2.0 Compatible
• Hardware monitoring: temperature, voltage, and fan monitoring