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why 22pf not 15pf

R1
Resistance
4.7KΩ
R2
Resistance
4.7KΩ
D2
D1
Y1
Battery
Manufacturer Part Number
CR2032-BS-6-1
RTC
Manufacturer Part Number
PCF8563T/5,518
C1
Capacitance
22pF

PCF8563 Module

PCF8563 Module thumbnail