nrf52840 pin reset polarity

[dom]

nRF52840 OPS v0.5.1 section 16.16.2 states “A pin reset is generated when the physical reset pin on the device is asserted”. This seems to contradict the descriptive name given to the physical reset pin AC13 “nRESET” which indicates a reset is generated when the pin is de-asserted. The reference circuitry symbol labels this pin as “RESET”. Please clarify the directionality of the physical reset pin.

[Stian Røed Hafskjold]

Asserting a pin means setting it to its active state. nRESET indicates that the active state is low. Thus, asserting the nRESET pin means pulling it low. This is not explicitly mentioned in the product spec, which it should be, so sorry for the confusion.