The Winbond W83687THG is a highly integrated Super I/O chip designed for PC systems. It combines a variety of functions, including LPC interface, hardware monitoring, fan control, and legacy I/O ports, into a single chip to reduce overall system cost and complexity. The W83687THG is commonly used on motherboards to manage essential system functions and provide connectivity for legacy devices.

Applications

• Desktop PC motherboards
• Embedded systems
• Industrial PCs

Features

• LPC Interface: Provides a low pin count interface to the system chipset, reducing board space and cost.
• Hardware Monitoring: Monitors critical system parameters such as CPU temperature, system temperature, fan speeds, and voltage levels.
• Fan Control: Offers sophisticated fan control capabilities, allowing for automatic adjustment of fan speeds based on temperature sensors, optimizing system cooling and reducing noise.
• Legacy I/O Ports: Includes support for legacy serial and parallel ports, providing compatibility with older peripherals.
• Keyboard and Mouse Controller: Integrates keyboard and mouse controller functionality.
• GPIO Pins: Provides general-purpose input/output (GPIO) pins for custom applications.

Benefits

• Reduced System Cost: Integrates multiple functions into a single chip, reducing the number of components required on the motherboard.
• Improved System Reliability: Hardware monitoring features help to detect potential system problems early, preventing system failures.
• Optimized System Cooling: Fan control features allow for automatic adjustment of fan speeds, optimizing system cooling and reducing noise.
• Legacy Peripheral Support: Provides compatibility with older serial and parallel peripherals.
• Simplified System Design: Reduces the complexity of the motherboard design.

Additional Details

The W83687THG is typically packaged in a 128-pin PQFP (Plastic Quad Flat Pack). It operates at a 3.3V power supply. The hardware monitoring section includes sensors for monitoring voltage, temperature and fan speed. The fan control section provides both manual control and automatic control, based on temperature sensors. The legacy I/O section supports two serial ports and one parallel port.