W48C55A, W48C54A Datasheet (Cypress Semiconductor)

W48C55A, W48C54A, Frequency Synthesizers

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.

Fixed 24-MHz output for floppy drive or super I/O application Fixed 32-MHz output for ISA or PCI bus clock applicat

W48C55A 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 Penti