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疑难CY25568单片机解密成功

时间:2011-06-11 09:02:03

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The Cypress CY25568 is a Spread Spectrum Clock Generator (SSCG) IC used for the purpose of reducing Electro Magnetic Interference (EMI) found in today’s high-speed digital electronic systems.The CY25568 uses a Cypress proprietary Phase-Locked Loop (PLL) and Spread Spectrum Clock (SSC)
technology to synthesize and modulate the frequency of the digital clock. By frequency modulating the clock, the measured EMI at the fundamental and harmonic frequencies is greatly reduced.This reduction in radiated energy can significantly reduce the cost of complying with regulatory agency requirements and improve time to market without degrading system performance.
FEATURES
·4 to 32 MHz Input Frequency Range
·4 to 128 MHz Output Frequency Range
·Accepts Clock, Crystal and Resonator Inputs
·1x, 2x and 4x Frequency Multiplication
·Non-modulated Reference Frequency Output
·Center and Down Spread Modulation
·Low Power Dissipation
3.3V =  52 mW-typ @ 6MHz
3.3V =  60 mW-typ @ 12MHz
3.3V =  72 mW-typ @ 24MHz
·Power Down Mode
·Low Cycle-to Cycle Jitter
8MHz = 195 ps-typ
16MHz = 175 ps-typ
32MHz = 100 ps-typ
·Available in 16-pin  (150 mil.) SOIC package

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