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CY2291

Document #: 38-07189 Rev. *C

Page 10 of 12

Switching Waveforms

SELECT

CPU

OLD SELECT

NEW SELECT STABLE

old

new

& t

Figure 5. CPU Frequency Change

Test Circuit

Ordering Information

Ordering Code

Package Type

Operating Range

Operating Voltage

CY2291FI

[16]

20-Pin SOIC

Industrial

3.3V or 5.0V

Pb-Free

CY2291SXC–XXX

20-Pin SOIC

Commercial

5.0V

CY2291SXC–XXXT

20-Pin SOIC – Tape and Reel

Commercial

5.0V

CY2291SXL–XXX

20-Pin SOIC

Commercial

3.3V

CY2291SXL–XXXT

20-Pin SOIC – Tape and Reel

Commercial

3.3V

CY2291FX

20-Pin SOIC

Commercial

3.3V or 5.0V

CY2291FXT

20-Pin SOIC – Tape and Reel

Commercial

3.3V or 5.0V

Package Characteristics

Package

(C/W)

Transistor Count

20-pin SOIC

125

9271

0.1

CLK out

LOAD

GND

OUTPUTS

Note

16. Not recommended for new designs.

[+] Feedback

Содержание CY2291

Страница 1: ...d on CPUCLK output Enables application compatibility Industry standard packaging saves on board space Part Number Outputs Input Frequency Range Output Frequency Range Specifics CY2291 8 10 MHz 25 MHz...

Страница 2: ...select input bit 2 Optionally enables suspend feature when LOW 3 SHUTDOWN OE 18 Places outputs in three state 4 condition and shuts down chip when LOW Optionally only places outputs in three state 4...

Страница 3: ...izable set of outputs and or PLLs when LOW All PLLs and any of the outputs except 32K can be shut off in nearly any combination The only limitation is that if a PLL is shut off all outputs derived fro...

Страница 4: ...8 kHz HIGH Level Output Voltage IOH 0 5 mA VBATT 0 5 V VOL 32 32 768 kHz LOW Level Output Voltage IOL 0 5 mA 0 4 V VIH HIGH Level Input Voltage 9 Except crystal pins 2 0 V VIL LOW Level Input Voltage...

Страница 5: ...0V Parameter Description Conditions Min Typ Max Unit VOH HIGH Level Output Voltage IOH 4 0 mA 2 4 V VOL LOW Level Output Voltage IOL 4 0 mA 0 4 V VOH 32 32 768 kHz HIGH Level Output Voltage IOH 0 5 mA...

Страница 6: ...to enter three state mode after SHUTDOWN OE goes LOW 10 15 ns t6 Output Enable Time Time for output to leave three state mode after SHUTDOWN OE goes HIGH 10 15 ns t7 Skew Skew delay between any ident...

Страница 7: ...fter SHUTDOWN OE goes LOW 10 15 ns t6 Output Enable Time Time for output to leave three state mode after SHUTDOWN OE goes HIGH 10 15 ns t7 Skew Skew delay between any identical or related outputs 3 12...

Страница 8: ...o peak period jitter t9A Max t9A min of clock period fOUT 4 MHz 0 5 1 t9B Clock Jitter 14 Peak to peak period jitter t9B Max t9B min 4 MHz fOUT 16 MHz 0 7 1 ns t9C Clock Jitter 14 Peak to peak period...

Страница 9: ...C Clock Jitter 14 Peak to peak period jitter 16 MHz fOUT 50 MHz 400 500 ps t9D Clock Jitter 14 Peak to peak period jitter fOUT 50 MHz 250 350 ps t10A Lock Time for CPLL Lock Time from Power Up 25 50 m...

Страница 10: ...Pb Free CY2291SXC XXX 20 Pin SOIC Commercial 5 0V CY2291SXC XXXT 20 Pin SOIC Tape and Reel Commercial 5 0V CY2291SXL XXX 20 Pin SOIC Commercial 3 3V CY2291SXL XXXT 20 Pin SOIC Tape and Reel Commercia...

Страница 11: ...CY2291 Document 38 07189 Rev C Page 11 of 12 Package Diagram Figure 6 20 Pin 300 MIL SOIC Package Outline 51 85024 C Feedback...

Страница 12: ...R IMPLIED WITH REGARD TO THIS MATERIAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE Cypress reserves the right to make changes without fu...

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