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CY25245芯片解密功能简介与分析

时间:2011-05-30 09:07:51

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CY25245芯片特点:
· Cypress PREMIS SMARTSPREAD family offering
· Generates an electromagnetic interference (EMI) optimized clocking signal at the output
· Selectable output frequency range
· Single 1.25%, 2.5%, 5%, or 10% down or center spread output
· Integrated loop filter components
· Operates with a 3.3 or 5V supply
· Low power CMOS design
· Available in 20-pin Small Shrunk Outline Package (SSOP)
Supply voltages: ...VDD = 3.3V ± 0.3V or VDD = 5V ± 10%
Frequency range:.... 13 MHz ≤ Fin ≤ 166 MHz
Cycle-to-cycle jitter:  ...... 250 ps (max)
Output duty cycle: ...... 40/60% (worst case)

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