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Buzzer

or

Speaker

Circuit

External Slow Clock:

RC osc.

LCD PANEL

Twice

Charge Pump is selected

LCD Max. Voltage=LV3=VDD

External Fast Clock:

Crystal osc.

Passive

Bias &

Filter

Circuit

Floating

Please Refer

AN022 for Speech

Output Circuit

No Capacitor

External Slow Clock:

Crystal osc.

No External Parts is

necessary if user adopt

Internal Fast RC

Clock

Twice

Charge Pump is selected

LCD Max. Voltage=LV3=3/2*VDD





External Fast Clock:

RC osc.































































 



































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