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Is a crystal oscillator required for the UPD6464A or UPD6465 OSD IC?

Latest Updated:03/01/2006

Question:

Is a crystal oscillator required for the UPD6464A or UPD6465 OSD IC?

Answer:

It is required when 4fsc crystal oscillation is selected by the oscillation method control command. This is because the 4fsc signal generated by the oscillator and VCO is used as the reference clock for synchronization signal generation when the internal video signal mode is set, and the fsc signal generated by dividing this 4fsc signal by four is used as the reference clock for internal video signal generation and for the synchronization separation circuit (when the external video signal mode is set).
Be sure to use the crystal oscillation control command to set crystal oscillation to ON when displaying characters.
Suitable Products
CMOS Operational Amplifiers
Bipolar Operational Amplifiers