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參數資料
| 型號： | CY25901 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Spread Spectrum Clock Generator |
| 中文描述： | 擴頻時鐘發生器 |
| 文件頁數： | 1/5頁 |
| 文件大小： | 87K |
| 代理商： | CY25901 |
Spread Spectrum Clock Generator
CY25901
Cypress Semiconductor Corporation
Document #: 38-07521 Rev. **
3901 North First Street
San Jose
,
CA 95134
408-943-2600
Revised February 18, 2003
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
= XIN ± 0.35% (0.7% center)
= XIN ± 1.20% (2.4% center)
= XIN (No Spread)
CY25901SC-1
= XIN ± 0.5% (1.0% center)
= XIN ± 1.5% (3.0% center)
= XIN (No Spread)
Block Diagram
Pin Configuration
Oscillator
PLL
SSCG
XIN
XOUT
SSSEL
REFOUT
CLKOUT
SSON
CLKOUT
VDD
VSS
XIN
SSON#
REFOUT
SSSEL
XOUT
1
2
3
4
8
7
6
5
相關PDF資料 |
PDF描述 |
|---|---|
| CY25901SC | Spread Spectrum Clock Generator |
| CY25901SC-1 | Spread Spectrum Clock Generator |
| CY25901SC-1T | Spread Spectrum Clock Generator |
| CY25901SCT | Spread Spectrum Clock Generator |
| CY26049-36 | FailSafe PacketClock Global Communications Clock Generator(FailSafe PacketClock全局通訊時鐘發生器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CY25901SC | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum Clock Generator |
| CY25901SC-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CY25901SC-1T | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel |
| CY25901SCT | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Spread Spectrum Clock Generator |
| CY25901SXC | 制造商:Cypress Semiconductor 功能描述:SPREAD SPECTRUM CLOCK GEN 25901 |
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