Content originally posted in LPCWare by jhd on Fri Feb 05 12:11:53 MST 2016
Thank you R2D2,
Cx1 = Cx2 = 2 x CL - CP is appicable to both RTC oscillator and Crystal?
If 16Mhz Crystal has 18pF of load capacitance and 40 Ohms and ESR, XTAL_IN and XTAL_OUT pads has 3pF, then:
Cx1 = Cx2 = 2 x 18 -3
Cx1 = Cx2 = 33pF (to ABLS2-16.000MHZ-D4Y-T)
Is right?
33pF if the formula is applicable so: Cx2 = (2 * 18) -3 , because if is so: Cx2 = 2 * (18 - 3) the result is 30pF