AD5144 doesn't load configuration on power-up

Question

I am observing an AD5144 (actually 6 devices tested) not loading its configuration on power-up. On consecutive power-ups the configuration was sometimes loaded sometimes not. 
 
 The screenshot of the oscilloscope shows the measured supply voltages during power-up. 
 
 AD5144BCPZ100-RL7 
 VDD = VLOGIC = RESET = DIS = WPN = LRDAC = 2.5 V 
 ADDR0 = ADDR1 = 0V 
 VSS = EXP = -2.5 V 
 SCL = SDA = floating 
 
 Has anyone of you an idea on how to solve this?

EZAdministrator · Accepted Answer

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