Can someone please let me know the reset pin's (as in nReset pin 0.21) reset threshold voltage for the nRF52 series, specifically the nRF52810, nRF52832 and the nRF52840?
I need to know at what specific voltage level does the nRF chip consider itself reset and for how long a time is the nReset pin 0.21 to be held low?
If this could be pointed out in the pdf datasheet (product spec) this would be more helpful.
Note: I'm not interested in brown-out reset!
Hello,
We already have answered your questions. I can try to review it.
''Can someone please let me know the reset pin's (as in nReset pin 0.21) reset threshold voltage for the nRF52 series, specifically the nRF52810, nRF52832 and the nRF52840?''
'I need to know at what specific voltage level does the nRF chip consider itself reset and for how long a time is the nReset pin 0.21 to be held low?''
The chip will enter reset state on negative edge (<0.3 * VDD), and the chip will be released from pin reset on positive edge (0.7 * VDD).
The brown-out reset generator puts the system in reset state if the supply voltage drops below the brownout reset (BOR) threshold.
''for how long a time is the nReset pin 0.21 to be held low?''
To guarantee pin reset on the nRF52832, the nRESET pin should be pulled logic low (<0.3 * VDD) for a minimum of 0.2us. You can look at this link (+) Is there a minimum pulse width for a pin reset? (nRF52810) - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com).
Hello,
We already have answered your questions. I can try to review it.
''Can someone please let me know the reset pin's (as in nReset pin 0.21) reset threshold voltage for the nRF52 series, specifically the nRF52810, nRF52832 and the nRF52840?''
'I need to know at what specific voltage level does the nRF chip consider itself reset and for how long a time is the nReset pin 0.21 to be held low?''
The chip will enter reset state on negative edge (<0.3 * VDD), and the chip will be released from pin reset on positive edge (0.7 * VDD).
The brown-out reset generator puts the system in reset state if the supply voltage drops below the brownout reset (BOR) threshold.
''for how long a time is the nReset pin 0.21 to be held low?''
To guarantee pin reset on the nRF52832, the nRESET pin should be pulled logic low (<0.3 * VDD) for a minimum of 0.2us. You can look at this link (+) Is there a minimum pulse width for a pin reset? (nRF52810) - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com).
