nrF51822 WLSCP Crystals/Oscillators

[kcyte]

How many crystals/oscillators do I needfor a NRF51822 WLSCP chip?

I looked at datasheet and I'm assuming I will need a 16 Mhz crystal, a 32Mhz crystal, a 16 Mhz oscillator, and a 32.768khz oscillator. But on 8.1.5 of the datasheet it says the 32.768 khz can be a crystal? Or are the 32.768 khz crystals and oscillators interchangeable? 

[Sigurd]

Hi,

You will need a 16 MHz crystal. A 32.768 kHz crystal is optional (there is an on-chip 32.768 kHz RC oscillator on the nRF51822)

Please take a look at chapter 11 "Reference circuitry " in the nRF51822 PS.

This tutorial here might also be helpful.