SCH5636-NS

Application Specific Microcontrollers Overview

The SCH5636 is a 3.3V PC2001 compliant Super I/O controller featuring an ARC-625D embedded controller core with 96KB instruction ROM and 16KB dual-ported SRAM. It utilizes an LPC interface supporting 19MHz to 33MHz frequencies and includes two SMBus 2.0 host controllers, PECI 2.0 support for up to four domains, and hardware monitoring for three external diodes plus internal ambient temperature. The device integrates legacy peripherals including a floppy disk controller, keyboard/mouse controller, two UARTs, and a parallel port. It provides four PWM outputs, four fan tachometer inputs, and 60 general-purpose I/O pins within a 128-pin QFP package.

Application Specific Microcontrollers Feature Summary

• ARC-625D Embedded Controller with 96KB ROM and 16KB SRAM
• LPC Interface with Serial IRQ and PME support
• Hardware Monitoring with PECI 2.0 and Temperature Resolution of 0.125°C
• Integrated Legacy Peripherals: FDC, KBC, Dual UART, Parallel Port

Application Specific Microcontrollers Applications

• Desktop system power management and hardware monitoring
• Fan control systems utilizing PWM outputs and tachometer inputs
• Legacy I/O integration in PC architectures requiring Super I/O functionality

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against current Microchip documentation to confirm packaging options. The base model SCH5636-NS indicates a 128-pin QFP package. Confirm RoHS compliance status and environmental information via official Microchip channels prior to procurement.

Application Specific Microcontrollers Selection Notes

Select this component for designs requiring integrated Super I/O functions alongside advanced thermal management via PECI and SMBus. Ensure the system architecture supports the LPC bus protocol and 3.3V I/O levels. Verify that the available GPIO count and peripheral set meet the specific interface requirements of the target motherboard design.

Application Specific Microcontrollers Part Context

The SCH5636 serves as a combined Super I/O and Embedded Controller solution for desktop platforms. It consolidates traditional legacy interfaces with modern power management and thermal monitoring capabilities, reducing the component count required for system control and hardware health monitoring in PC designs.

Application Specific Microcontrollers Replacement Considerations

Consult Microchip's official cross-reference tools or contact sales offices for verified substitute part numbers. Do not assume functional equivalence with other Super I/O or EC devices without verifying pinout, register compatibility, and electrical specifications.