Negative Resistance of CY2291 / CY2292 | Cypress Semiconductor
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Negative Resistance of CY2291 / CY2292
Last Updated: June 29, 2011
What is the negative resistance of the crystal oscillator on the CY2291 or CY2292?
It is designed to be at least 300ohms at 25MHz. To reduce oscillator startup issues, a crystal with an ESR of less than 60ohms is recommended.