Crystal problems

Hello Laruilamsa,

Epson TSX-3225 16MHZ, 10PPM, 9PF is also used on proximity or smart tag reference designs, so it should not cause any problems.

Select a crystal with ESR lower than 100 Ohm. Higher ESR values will increase the 16 MHz Xtal oscillator start-up time. For crystals having 50 to 80 Ohm ESR values, start-up time is about 2 to 2.5 msec, for crystals having ESR of 100 Ohm or higher, it can be as long as 4 or 5 msec. Take this into account. Smaller sized 16 MHz crystal packages (e.g. size 2016) tend to have higher ESR values than larger cans (e.g. size 3225) have.

BR, MH_Dialog

Hello Laruilamsa,

I like to add something:

The TSX-3225 16MHz is a very fine 16 MHz crystal to be used with DA14580/581.

The C0 is not specified in the Epson PDF files, but we know it's less than 1.5pF. That's a nice value.
R values are about 50 Ohm, and Cload can be specified for a proper value (e.g 10 - 12 pF).
CL = 9pF should work fine as well.
这一切导致了快速启动时间。

Are your Xtal16M connections long? That could pick-up noise/interference and cause the oscillator to malfunction.
But that should also be the case when using the Abracon Xtal I.M.O.

Did you apply a trim-value for the 16MHz Xtal oscillator. If not, please try with a default trim-value of 1250 (decimal value).
This will result in about 10 pF Cload

Best regards, BB_Dialog.