CY2291 Cypress Semiconductor Corporation., CY2291 Datasheet
CY2291
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CY2291 Summary of contents
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... Features Three integrated phase-locked loops EPROM programmability Factory-programmable (CY2291) or field-programmable (CY2291F) device options Low-skew, low-jitter, high-accuracy outputs Power-management options (Shutdown, OE, Suspend) Frequency select option Smooth slewing on CPUCLK Configurable 3. operation 20-pin SOIC Package Selector Guide Part Number Outputs CY2291 8 10 MHz–25 MHz (external crystal) 1 MHz– ...
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... Please refer to application note “Understanding the CY2291, CY2292 and CY2295” for more information. 4. The CY2291 has weak pull-downs on all outputs (except 32K). Hence, when a three-state condition is forced on the outputs, the output pins are pulled LOW. Document #: 38-07189 Rev. *A CY2291 20-pin SOIC ...
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... The CY2291 can be configured for either 5V or 3.3V operation. The internal ROM tables use EPROM technology, allowing full customization of output frequencies. The reference oscillator has been designed for 10-MHz to 25-MHz crystals, providing additional flexibility ...
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... IN Three-state outputs Max., 5V operation DD DD Shutdown active, CY2291/CY2291F excluding V BATT V = 3.0V BATT / connected to the Xout pin. DD =10+0.06•(F +F +2•F )+0.27•(F +F CPLL UPLL SPLL CLKA CLKB CY2291 Min. Max. Unit 4.5 5.5 V 3.0 3.6 V 2 10.0 25.0 MHz 1 30 MHz ...
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... Except crystal pins Except crystal pins –0. +0.5V IN Three-state outputs Max., 5V operation DD DD Shutdown active, CY2291I/CY2291FI excluding V BATT = 3.0V BATT CY2291 Min. Typ. Max. Unit 2 BATT 0.5 0.4 V 2.0 V 0.8 V < < 250 ...
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... Except crystal pins Except crystal pins –0. +0.5V IN Three-state outputs max., 3.3V operation DD DD Shutdown active, CY2291I/CY2291FI excluding V BATT V = 3.0V BATT CY2291 Min. Typ. Max. Unit 2 BATT 0.5 0.4 V 2.0 V 0.8 V < < 250 ...
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... Max. – t min.),% 9A 9A < 4 MHz) OUT Max. – t min < 16 MHz) OUT < 50 MHz) OUT CY2291 CY2291F CY2291 Min. Typ. Max. Unit 10 13000 ns (76.923 kHz) 11.1 13000 ns (76.923 kHz) 40% 50% 60% 45% 50 ...
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... MHZ [13] [13] [3, 12, 15] Max. – < 4 MHz) OUT Max. – t min < 16 MHz) OUT < 50 MHz) OUT > 50 MHz) CY2291 CY2291F CY2291 Min. Typ. Max. Unit 12.5 13000 ns (80 MHz) (76.923 kHz) 15 13000 ns (66.6 MHz) (76.923 kHz) 40% 50% 60% 45% 50% ...
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... Max. – < 4 MHz) OUT Max. – t min < 16 MHz) OUT < 50 MHz) OUT > 50 MHz) CY2291I CY2291FI CY2291 Min. Typ. Max. Unit 11.1 13000 ns (90 MHz) (76.923 kHz) 12.5 13000 ns (80 MHz) (76.923 kHz) 40% 50% 60% 45% 50% ...
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... Max. – t min.),% 9A 9A < 4 MHz) OUT Max. – t min < 16 MHz) OUT < 50 MHz) OUT CY2291I CY2291FI CY2291 Min. Typ. Max. Unit 15 13000 ns (66.6 MHz) (76.923 kHz) 16.66 13000 ns (60 MHz) (76.923 kHz) 40% 50% 60% 45% 50% 55 ...
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... CLK Outputs Jitter and Skew t 9A CLK OUTPUT RELATED CLK CPU Frequency Change OLD SELECT SELECT F old CPU Test Circuit 0.1 F Document #: 38-07189 Rev NEW SELECT STABLE t & new CLK out C OUTPUTS LOAD GND CY2291 Page [+] Feedback ...
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... CY2291SL–XXX S5 CY2291F S5 CY2291SI–XXX S5 CY2291FI S5 CyClocks is a trademark of Cypress Semiconductor Corporation. Pentium is a registered trademark of Intel Corporation. Custom Configuration Request Procedure The CY229x are EPROM-programmable devices that may be configured in the factory or in the field by a Cypress Field Applica- tion Engineer (FAE). The output frequencies requested will be matched as closely as the internal PLL divider and multiplier options allow ...
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... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 20-Lead (300-Mil) Molded SOIC S5 CY2291 51-85024-A Page ...
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... Document Title: CY2291 Three-PLL General Purpose EPROM Programmable Clock Generator Document Number: 38-07189 Issue Orig. of REV. ECN NO. Date Change ** 110321 10/28/01 SZV *A 121836 12/14/02 Document #: 38-07189 Rev. *A Description of Change Change from Spec number: 38-00410 to 38-07189 RBI Power up requirements added to Operating Conditions Information CY2291 ...