9UMS9633BKILFT

Overview

The Renesas 9UMS9633BKILFT is a clock generator and support product designed for Ultra Mobile PC (UMPC) applications, specifically supporting Poulsbo-based systems. It operates within an industrial temperature range of -40°C to +85°C and accepts a crystal input at 14.318MHz. The device features a 1:9 ratio with one PLL circuit, generating differential low-power push-pull outputs for CPU, SRC, LCD, and DOT clocks. Supply voltages include 1.425V to 3.465V for VDDIO_1.5 and 3.135V to 3.465V for VDDCORE_3.3. Maximum frequency reaches 166.67MHz. It is housed in a 48-VFQFPN package with dimensions of 6x6mm.

Feature Summary

• Industrial temperature compliance (-40°C to +85°C)
• Supports ULV CPUs with 67 to 167 MHz outputs
• Integrated series resistors on differential outputs eliminate external components
• Includes dedicated TEST/SEL and TEST/MODE pins for isolation resistor savings

Applications

• Poulsbo Based Ultra-Mobile PC (UMPC) for Industrial Temperature Range

Procurement Notes

Verify the manufacturer as Renesas Electronics Corporation or IDT, as historical branding varies. Confirm the package type is 48-VFQFPN (6x6mm). Check RoHS compliance status, noting that some sources indicate lead-free construction. Ensure the operating temperature range matches the industrial specification (-40°C to +85°C) required for your application environment.

Selection Notes

Select this component when designing for UMPC platforms requiring specific CPU frequencies between 67 and 167 MHz. It is suitable for environments demanding industrial temperature stability. The integrated series resistors simplify PCB layout by removing the need for external termination resistors on differential pairs. Verify SMBus interface compatibility if dynamic configuration via SCLK and SDATA is required.

Part Context

This part belongs to the ICS9UMS9633 family of ultra-mobile PC clocks. It is functionally similar to the 9UMS9633BKLFT but distinguished by its industrial temperature rating. The device integrates multiple PLLs for CPU, SRC, LCD, and DOT clocks, providing a comprehensive timing solution for mobile processors.

Replacement Considerations

The 9UMS9633BKLFT is a related variant within the same family. Verify if the commercial temperature range of the BKLFT variant meets your thermal requirements, as the BKILFT is specified for industrial temperatures. Both share the same pinout and electrical characteristics except for the temperature grade.

FAQ

What is the maximum CPU output frequency supported?

The device supports CPU outputs up to 166.67 MHz.

Does the device require external series resistors for differential outputs?

No, the device includes integrated series resistors on the differential outputs, eliminating the need for external components.

How is the CPU frequency selected?

CPU frequency selection is managed through the FSC_L and FSB_L inputs, which allow for settings such as 66.67, 100, 133.33, and 166.67 MHz.