Always-on Domain
The Always-on (AON) Domain contains the following:
- Retention
registers
A minimum set of registers that need to be retained through the sleep/wakeup cycles. For example, DC-DC startup parameters and XO configuration.
- Always-on GPIOs
Up to 8 GPIOs that can be used as external wakeup sources. One example of their usage is to be connected to an external sensor. The sensor can stay ON while GR551x goes to sleep; based on a sensor event, the AON GPIO can be used to wake up GR551x.
