SWCU193 April 2023 CC2340R2 , CC2340R5 , CC2340R5-Q1
The lowest power state of the device, RESET is entered unconditionally when the reset pin is held low. In this state no oscillators are running, all voltage regulators are disabled and I/Os have both their input and output buffers disabled. There is no internal mechanism to allow software to enter RESET, nor any software mechanism to allow exit from RESET. Thermal shutdown functionality, after having been explicitly triggered by software, holds device in RESET state by pulling RSTN pin low as long as temperature is above a threshold. See the device specific data sheet for thermal threshold values.