Translation - Japanese: ディープ スリープ中のPSoC 4のVrefについて - Community Translated (JA)
Is Vref is available in Deep Sleep for PSoC® 4 devices?
The following shows the different resources available during different power modes. As marked in the table, ADC is OFF during Deep Sleep.
The Vref in PSoC 4 is an integral part of the ADC Component. So, it will not be available in Deep Sleep operation.