nRF52832 voltage detector application

Hi,

I will change the hardware solution using a voltage detector, but I am not clear yet on the nRF52832 operating as follows.

1. If nRF52832 is reset at 1.7V even if the input voltage is going up to 2.5V with slower rise time, do you mean that there is no problem?

 This means that it takes approximately 500ms until 1.7V, and it takes approximately 1sec until 2.5V.

500 ms is too long. VDD should reach 1V7 under 60 ms. 

The nRF52832 can reset if the supply voltage increases with 300 mV or more in 300 ms or less. You therefore have to make sure that the supply voltage doesn't increase too fast between 0V and 2V5. 

2. Do you mean that nRF52832 VDD should supply the power when the input voltage becomes 1.7V less than 60ms rise time?

I am using a LDO for nRF52832 VDD, so I am very appreciated for you if you prepare your proposal circuit draft.

You can use voltage detector that only feeds VDD to the nRF when the VDD has reached 1V7 or 2V5.

regards

Jared