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W48C55A - Frequency Synthesizers

Download the W48C55A datasheet PDF. This datasheet also covers the W48C54A variant, as both devices belong to the same frequency synthesizers family and are provided as variant models within a single manufacturer datasheet.

Description

Fixed 1.843-MHz output for serial I/O clock application Fixed 12-MHz output for keyboard clock application Fixed 16-MHz output for APIC or bus clock application Fixed Reference output.

Features

  • Proprietary crystal oscillator circuitry provides low REFOUT jitter, excellent duty cycle.
  • Power-on delay feature ensures full VDD is reached prior to output activation.
  • 3.3V and 5V operation supported including the VRE (Voltage Regulated Extended) specification for Pentium® processor.
  • Pin and function compatible with AV9154/AV9155.
  • Integral PLL loop filter components ensures stable PLL operation in noisy system environment Block Diagram.
  • S.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (W48C54A-CypressSemiconductor.pdf) that lists specifications for multiple related part numbers.

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
A W48C54A/55A Frequency Synthesizers Features • Proprietary crystal oscillator circuitry provides low REFOUT jitter, excellent duty cycle • Power-on delay feature ensures full VDD is reached prior to output activation • 3.
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