ZHCS927G May 2012 – January 2018 CDCM6208
PRODUCTION DATA.
If the supply ramp time for DVDD, VDD_PLL1, VDD_PLL2, VDD_PRI, and VDD_SEC are faster than 50 ms from 0 V to 1.8 V, no special provisions are necessary on PDN; the PDN pin can be left floating. Even an external capacitor to GND can be omitted in this circumstance, as the device delays calibration sufficiently by internal means.