CY25901SC-1 Cypress Semiconductor Corporation., CY25901SC-1 Datasheet

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CY25901SC-1

Manufacturer Part Number
CY25901SC-1
Description
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07521 Rev. **
Features
Table 1. Function Table
• Supports clock requirements for Spread Spectrum
• 40-MHz Spread Spectrum clock output
• Reference clock output
• Two spread bandwidths: 1%, 3%
• External clock or Cera-Lock input
• 3.3V operation
• 8-pin SOIC package
Block Diagram
X (don’t care)
SSSEL
0
1
SSSEL
XIN
XOUT
SSON
SSON
Oscillator
0
0
1
PLL
SSCG
REFOUT
XIN
XIN
XIN
REFOUT
3901 North First Street
CLKOUT
= XIN ± 0.35% (0.7% center)
= XIN ± 1.20% (2.4% center)
= XIN (No Spread)
Spread Spectrum Clock Generator
Description
The CY25901 clock generator provides a low-electromagnetic
interference (EMI) clock output. It features Spread Spectrum
technology, a modulation technique designed specifically for
reducing EMI at the fundamental frequency and its harmonics.
CY25901SC
CLKOUT
VDD
VSS
Pin Configuration
XIN
CLKOUT (Spread Spectrum)
1
2
3
4
San Jose
,
= XIN ± 0.5% (1.0% center)
= XIN ± 1.5% (3.0% center)
= XIN (No Spread)
CA 95134
8
7
6
5
Revised February 18, 2003
CY25901SC-1
SSON#
REFOUT
SSSEL
XOUT
408-943-2600
CY25901
[+] Feedback

Related parts for CY25901SC-1

CY25901SC-1 Summary of contents

Page 1

... XIN = XIN (No Spread) Pin Configuration REFOUT CLKOUT 1 VDD 2 VSS 3 XIN 4 CLKOUT • 3901 North First Street • San Jose CY25901 CY25901SC-1 = XIN ± 0.5% (1.0% center) = XIN ± 1.5% (3.0% center) = XIN (No Spread) SSON# 8 REFOUT 7 SSSEL 6 XOUT 95134 • 408-943-2600 Revised February 18, 2003 [+] Feedback ...

Page 2

Pin Description Pin No. Name I/O 1 CLKOUT O Spread Spectrum Clock Output. See Table 1 for frequency selections. 2 VDD PWR Power Supply. 3 VSS PWR Common Ground. 4 XIN I Oscillator Buffer Input. Connect to an external parallel ...

Page 3

... T Outputs Rise Time R [4] T Outputs Fall Time F BW%1 CY25901SC, Spread % BW%2 CY25901SC, Spread % BW%3 CY25901SC–1, Spread % BW%4 CY25901SC–1, Spread % T Power up to Stable Output PU [5] T CLKOUT Duty Cycle DC T REFOUT Cycle to Cycle jitter CCJ T CLKOUT Cycle to Cycle jitter CCJ Fmod Frequency Modulation Rate Notes: 1 ...

Page 4

... SOIC CY25901SC–1T 8-pin SOIC – Tape and Reel CY25901SC 8-pin SOIC CY25901SCT 8-pin SOIC –Tape and Reel Package Drawing and Dimensions All product and company names mentioned in this document are the trademarks of their respective holders. Document #: 38-07521 Rev. ** © Cypress Semiconductor Corporation, 2003. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product ...

Page 5

Document History Page Document Title: CY25901 Spread Spectrum Clock Generator Document Number: 38-07521 REV. ECN NO. Issue Date ** 124075 02/19/03 Document #: 38-07521 Rev. ** Orig. of Change Description of Change RGL New Data Sheet CY25901 Page 5 of ...

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