ADuCM330 operation questions

Hi ADI's

One of my customers is developing with ADuCM330 and asked the following questions.

1. How to use ADC0TH register

   she wants to use ADC0TH register for wake in power down state.

   Even if the current is larger than the setting value, the interrupt does not occur.

   Is there any use / example of ADC0TH register?

2. Is there a way to implement RTC in System halt or Hibernate mode?

   Which timer of the ADuCM330 should I use?

Thank you