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| CY2291 | |
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Switching Characteristics, Commercial 5.0V (continued) |
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Parameter | Name |
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t10B | Lock Time for | Lock Time from Power Up |
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| < 0.25 | 1 | ms | ||
| UPLL and SPLL |
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| Slew Limits | CPU PLL Slew Limits | CY2291 | 8 |
| 100 | MHz | ||
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| CY2291F | 8 |
| 90 | MHz |
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Switching Characteristics, Commercial 3.3V |
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| Description | Min. | Typ. | Max. | Unit | |
t1 | Output Period | Clock output range, 3.3V | CY2291 | 12.5 |
| 13000 | ns | ||
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| (80 MHz) |
| (76.923 kHz) |
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| CY2291F | 15 |
| 13000 | ns |
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| (66.6 MHz) |
| (76.923 kHz) |
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| Output Duty | Duty cycle for outputs, defined | as t2 ⎟ t1[12] | 40% | 50% | 60% |
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| Cycle[11] | fOUT > 66 MHZ |
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| Duty cycle for outputs, defined as t2 ⎟ t1[12] | 45% | 50% | 55% |
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| fOUT < 66 MHZ |
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t3 | Rise Time | Output clock rise time[13] |
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| 3 | 5 | ns | ||
t4 | Fall Time | Output clock fall time[13] |
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| 2.5 | 4 | ns | ||
t5 | Output Disable | Time for output to enter |
| 10 | 15 | ns | |||
| Time | SHUTDOWN/OE goes LOW |
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t6 | Output Enable | Time for output to leave |
| 10 | 15 | ns | |||
| Time | SHUTDOWN/OE goes HIGH |
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t7 | Skew | Skew delay between any identical or related outputs[3, |
| < 0.25 | 0.5 | ns | |||
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t8 | CPUCLK Slew | Frequency transition rate |
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t9A | Clock Jitter[14] |
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t9B | Clock Jitter[14] |
| <0.7 | 1 | ns | ||||
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t9C | Clock Jitter[14] |
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| <400 | 500 | ps | |||
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| (16 MHz < fOUT < 50 MHz) |
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t9D | Clock Jitter[14] |
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| <250 | 350 | ps | |||
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t10A | Lock Time for | Lock Time from Power Up |
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| <25 | 50 | ms | ||
| CPLL |
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t10B | Lock Time for | Lock Time from Power Up |
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| <0.25 | 1 | ms | ||
| UPLL and SPLL |
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| Slew Limits | CPU PLL Slew Limits | CY2291 | 8 |
| 80 | MHz | ||
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| CY2291F | 8 |
| 66.6 | MHz |
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Document #: | Page 7 of 12 |
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