About limitations in hibernation state

[yaga_3967241]

Hi,

We are using PSoC LP5 and we decide to make PSoC in hibernation state under some condition. My questions are: what function may not work when PSoC is in hibernation mode, e.g.,

1. Will RTC still keep counting during hibernation?
2. Will the pins that are set to high remain high during hibernation?
3. Any other limitations?

Regards,

Winston

[Len_CONSULTRON · Accepted solution]

Winston,

Here are some informational resources to help answer your questions.

Here's a link to an App note about PSoC5LP low-power techniques: AN77900_PSoC_3_and_PSoC_5LP_Low-Power_Modes_and_Power_Reduction_Techniques 

In this document it shows what interrupts are available in each mode [Section 1.2].  (In Hibernate, the RTC using the XTAL_32K is turned off.)

Also, Section 3.9 discusses about GPIO states in any low-power mode. (In hibernate, the GPIO states are retained.)