Cypress Semiconductor CY2291 Specification Sheet

Browse online or download pdf Specification Sheet for Computer Hardware Cypress Semiconductor CY2291. Cypress Semiconductor CY2291 12 pages. Cypress three-pll general purpose eprom programmable clock generator specification sheet

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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 3.3V or 5V operation
■
20-pin SOIC Package
Part Number Outputs
CY2291
8
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
CY2291I
8
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
CY2291F
8
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
CY2291FI
8
10 MHz–25 MHz (external crystal)
1 MHz–30 MHz (reference clock)
Logic Block Diagram
S2/SUSPEND
SHUTDOWN/
Cypress Semiconductor Corporation
Document #: 38-07189 Rev. *C
Input Frequency Range
32XIN
OSC.
32XOUT
XTALIN
OSC.
XTALOUT
CPLL
(8 BIT)
S0
S1
UPLL
(10 BIT)
SPLL
(8 BIT)
OE
•
198 Champion Court
Three-PLL General Purpose EPROM
Programmable Clock Generator
Benefits
■
Generates up to three custom frequencies from external
sources
■
Easy customization and fast turnaround
■
Programming support available for all opportunities
■
Meets critical industry standard timing requirements
■
Supports low-power applications
■
Eight user-selectable frequencies on CPU PLL
■
Allows downstream PLLs to stay locked on CPUCLK output
■
Enables application compatibility
■
Industry-standard packaging saves on board space
Output Frequency Range
76.923 kHz–100 MHz (5V)
76.923 kHz–80 MHz (3.3V)
76.923 kHz–90 MHz (5V)
76.923 kHz–66.6 MHz (3.3V)
76.923 kHz–90 MHz (5V)
76.923 kHz–66.6 MHz (3.3V)
76.923 kHz–80 MHz (5V)
76.923 kHz–60.0 MHz (3.3V)
/1,2,4
/1,2,4,8
/1,2,3,4,5,6
/8,10,12,13
/20,24,26,40
/48,52,96,104
/2,3,4
CONFIG
EPROM
,
•
San Jose
CA 95134-1709
CY2291
Specifics
Factory Programmable
Commercial Temperature
Factory Programmable
Industrial Temperature
Field Programmable
Commercial Temperature
Field Programmable
Industrial Temperature
32K
XBUF
CPUCLK
CLKA
CLKB
CLKC
CLKD
CLKF
•
408-943-2600
Revised September 16, 2008
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