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世纪芯CY2544芯片解密技术研究

时间:2011-06-02 08:53:31

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CY2544芯片主要性能特点:
· Four fully integrated phase-locked loops (PLLs)
· Input Frequency range:
— External crystal: 8 to 48 MHz
— External reference: 8 to 166 MHz clock
· Wide operating output frequency range
— 3 to 166 MHz
· Programmable Spread Spectrum with Center and Down Spread option and Lexmark modulation profile
· Two VDD core voltage options:
— 2.5V, 3.0V, and 3.3V for CY2544
— 1.8V for CY2546
· Selectable output voltages:
— 2.5V, 3.0V, and 3.3V for CY2544
— 1.8V for CY2546
· Frequency Select feature with option to select eight different frequencies
· Low jitter, high accuracy outputs
· Up to nine clock outputs
· Programmable output drive strength
· Glitch-free outputs while frequency switching
· 24-pin QFN package
· Commercial and Industrial temperature ranges

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