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W48C55A

Cypress Semiconductor
Part Number W48C55A
Manufacturer Cypress Semiconductor
Description Frequency Synthesizers
Published Jun 25, 2016
Detailed Description A W48C54A/55A Frequency Synthesizers Features • Proprietary crystal oscillator circuitry provides low REFOUT jitter, ...
Datasheet PDF File W48C55A PDF File

W48C55A
W48C55A

Overview
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.
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 • Smooth frequency transition of CPU and 2XCPU outputs • Compatible with Intel X86 and other high-performance processors • Up to eight outputs for CPU and peripherals • Supports Green PC and notebook designs • Custom options available with metal layer change • High-performance, low-power CMOS • Available in 16- (150-mil) and 20-pin SOIC package (300-mil) Pin Configurations 14.
318 MHz Xtal X1 X2 VDD XTAL OSC PD PLL1 14.
318 MHz Fixed Outputs NC 1 16 NC X2 2 15 47.
059MHz X1 3 14 NC W48C54A-08 VDD 4 13 VDD GND 5 12 GND NC 6 11 REF(20MHz) 32MHz 7 10 NC GND 8 9 OE FS2:0 PLL2 2XCPU CPU GND OE FS0 1 16 FS1 W48C54A-05, 09 X2 2 15 CPU X1 3 14 NC VDD 4 13 VDD GND 5 12 GND 40MHz 6 11 REF(20MHz) 32MHz 7 10 NC GND 8 9 OE 1.
843MHz 1 16 FS1 X2 2 15 FS0 W48C54A-59 X1 3 14 CPU VDD 4 13 VDD GND 5 12 GND 24MHz 6 11 14.
318MHz 12MHz 7 10 PD GND 8 9 OE Intel and Pentium are registered trademarks of Intel Corporation.
1.
843MHz X2 X1 VDD GND 16MHz 24MHz 12MHz GND 0E 1 2 3 4 5 6 7 8 9 10 W48C55A-61 20 FS0 19 FS1 18 CPUCLK 17 2XCPUCLK 16 VDD 15 GND 14 14.
318MHz 13 14.
318MHz 12 PD 11 FS2 Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600 September 28 1999, rev.
** W48C54A/55A Pin Definitions Pin Name 1.
843MHz 12MHz 16MHz REF 24MHz 32MHz 40MHz 47.
059MHz 2XCPU CPU NC OE PD FS0 FS1 FS2 VDD GND X1 X2 Pin Type O O O O O O O O O O I Pin # -05, -09 N/A N/A N/A 11 N/A 7 6 N/A N/A 15 10, 14 9 Pin # -08 N/A N/A N/A ...


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