Hi Dialog Team,
I'm interested in using your DA14531 in a low powered sensor application, and am especially interested in your Extended Sleep power mode. Can you maintain a BLE connection in this mode, and can receiving a BLE message wake you from this mode into the active state? In section 22.214.171.124 of the datasheet, it says "RAM is expected to be retained for ... keeping a BLE connection alive (stack variables or BLE data)", but later I can only find references to waking from a GPIO or a timer.
If you can't wake from Extended Sleep by receiving a BLE message, what's the lowest power consumption state that you can wake from with a BLE message? Is the next best option "Receiver Active, CPU idle at 16MHz, DCDC on", 2.2mA? Can this current be decreased by powering down the baseband during idle periods, as mentioned in section 29 of the datasheet?
If it's helpful, I'm planning to use a 3V coin cell to power this, and putting the DA14531 into buck mode.