9UMS9001AKLFT

Overview

The Renesas 9UMS9001AKLFT is a PC main clock generator IC, part of the CK540 series. It features a single circuit with a 1:14 input-to-output ratio, designed for Ultra Mobile PC (UMPC) applications. The device accepts a crystal input and provides differential push-pull outputs, including dedicated pairs for CPU, SRC, ITP, LCD100, and DOT96 signals. It operates within a supply voltage range of 1.71V to 3.465V and supports frequencies up to 200MHz. The component is housed in a 56-VFQFPN package with an exposed pad.

Feature Summary

• Integrates low-power differential push-pull output pairs for CPU, SRC, ITP, LCD100, and DOT96.
• Supports split rail operation and runs from a single 3.3V rail.
• Includes integrated Vreg and series resistors on differential outputs.
• Features dedicated TEST/SEL and TEST/MODE pins to save isolation resistors.

Applications

• Ultra Mobile PC (UMPC) systems
• Dothan ULV CPU platforms

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure compatibility with required packaging or material specifications. Confirm that the 56-VFQFPN package matches the target PCB footprint and thermal requirements. Check for any product change notifications regarding moisture sensitivity levels or assembly site changes before finalizing procurement plans.

Selection Notes

Select this component for designs requiring a unified clock source for multiple subsystems in UMPC architectures. Ensure the input crystal frequency aligns with the 1:14 division ratio to achieve the desired output speeds. Verify that the system power budget accommodates the 1.71V to 3.465V supply range and that the board layout supports the exposed pad thermal dissipation characteristics of the 56-VFQFPN package.

Part Context

This IC belongs to the CK540 family of PC main clocks, specifically engineered for ultra-low-voltage mobile processors like the Intel Dothan ULV. It consolidates multiple clock generation functions into a single chip, reducing component count and board space compared to discrete solutions. The integration of internal regulators and termination resistors simplifies the design process for mobile computing platforms.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided data.