CY25000 Cypress Semiconductor, CY25000 Datasheet
CY25000
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CY25000 Summary of contents
Page 1
... C of the crystal. Eliminates the need for external C Load capacitors. tions systems. an external pin. Pin Configuration CY25000 8-pin SOIC 6 REFCLK 1 XIN/CLKIN 2 VDD 5 SSCLK 3 PD#/OE VSS 4 , • San Jose CA 95134 Revised September 26, 2003 CY25000 Load XOUT 8 7 SSON 6 REFCLK 5 SSCLK • 408-943-2600 ...
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... The range for down spread is from –0.5% to –5.0%. Contact the factory for smaller or larger spread % amounts if required. The input to the CY25000 can be either a crystal or a clock signal. The input frequency range for crystals is 8–30 MHz, and for clock signals is 8–166 MHz. ...
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... Condition SSCLK, Measured REFCLK, Measured Duty Cycle of CLKIN = 50%. SSCLK from 3 to 100 MHz; REFCLK from 10 to 100 MHz. 20%–80 SSCLK from 3 to 100 MHz; REFCLK from 10 to 100 MHz. 80%–20 CY25000 Min. Typ. Max. 3.13 3.30 3. ...
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... Additional information on the CY25000 can be obtained from the Cypress web site at www.cypress.com. Product Functions Input Frequency (XIN, pin 1 and XOUT The input to the CY25000 can be a crystal or a clock. The input frequency range for crystals MHz, and for clock signal 166 MHz. C ...
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... CLKOUT (Asynchronous ) Notes: 3. Since the load capacitors (C and C ) are provided by the CY25000, no external capacitors are needed on the XIN and XOUT pins to match the crystal load XIN XOUT capacitor (C ). Only a single 0.1-µF bypass capacitor is required on the external clock is used, apply the clock to XIN (pin 1) and leave XOUT (pin 8) floating (unconnected). ...
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... Fnominal 66 65.5 65 64.5 140 160 180 200 0 CY25000 Spread Spectrum Profile: Fnom=166MHz, Fmod=30kHz, Spread%= +/- 100 120 140 160 180 Time (us) Spread Spectrum Profile: Fnom=66MHz, Fmod=30kHz, Spread%= +/- 100 120 140 160 ...
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... SSCLK Attenduation vs. VDD over Tem perature (Measured at 7th Harmonic w ith Fnom=100MHz and =15pF) -10 -12 -40C -14 25C -16 85C -18 -20 2.7 3.9 CY25000 IDD vs. SSCLK 50 100 150 200 SSC REFCLK=SSCLK REFCLK=30MHz Measured Spread% vs. VDD over Tem perature =15pF) LOA D 2.7 3 3.3 3.6 3.9 VDD (V) Spread=5.0%, C ...
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... S pre Custom Configuration Request Procedure The CY25000 is a memory programmable device that is configured in the factory. All requests must be submitted to the local Cypress Field Application Engineer (FAE) or sales repre- sentative. A sample request form (refer to “CY25000 Sample Ordering Information [6] Part Number ...
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... S08.15 STANDARD PKG. SZ08.15 LEAD FREE PKG. SEATING PLANE 0.061[1.549] 0.068[1.727] 0.004[0.102] 0.004[0.102] 0°~8° 0.0098[0.249] CY25000 MAX. PART # 0.010[0.254] X 45° 0.016[0.406] 0.0075[0.190] 0.016[0.406] 0.0098[0.249] 0.035[0.889] 51-85066-*C ...
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... Document History Page Document Title: CY25000 Programmable Spread Spectrum Clock Generator for EMI Reduction Document Number: 38-07424 REV. ECN NO. Issue Date ** 115076 06/20/02 *A 121901 12/14/02 *B 129855 10/01/03 Document #: 38-07424 Rev. *B Orig. of Change CKN New Data Sheet RBI Power-up requirements added to Operating Conditions Information RGL Removed “ ...