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PDF CY25901 Data sheet ( Hoja de datos )
| Número de pieza | CY25901 | |
| Descripción | Spread Spectrum Clock Generator | |
| Fabricantes | Cypress Semiconductor | |
| Logotipo |  |
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CY25901
Spread Spectrum Clock Generator
Features
• 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
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.
Table 1. Function Table
SSSEL
0
1
X (don’t care)
SSON
0
0
1
REFOUT
XIN
XIN
XIN
CLKOUT (Spread Spectrum)
CY25901SC
CY25901SC-1
= XIN ± 0.35% (0.7% center)
= XIN ± 0.5% (1.0% center)
= XIN ± 1.20% (2.4% center)
= XIN ± 1.5% (3.0% center)
= XIN (No Spread)
= XIN (No Spread)
Block Diagram
Pin Configuration
XIN
XOUT
SSON
SSSEL
Oscillator
PLL
SSCG
REFOUT
CLKOUT
CLKOUT 1
VDD 2
VSS 3
XIN 4
8 SSON#
7 REFOUT
6 SSSEL
5 XOUT
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-07521 Rev. **
Revised February 18, 2003
1 page  
Document History Page
Document Title: CY25901 Spread Spectrum Clock Generator
Document Number: 38-07521
REV.
Orig. of
ECN NO. Issue Date Change
**
124075 02/19/03
RGL New Data Sheet
Description of Change
CY25901
Document #: 38-07521 Rev. **
Page 5 of 5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet CY25901.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CY25901 | Spread Spectrum Clock Generator | Cypress Semiconductor |
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