nRF93M1 can be reset through the dedicated nRESET pin or through AT commands.
nRESET pin
nRESET is active-low and has an internal 120 kΩ pull-up, so it remains high if left floating. The host PCB does not need an external pull-up resistor.
- Pulling nRESET low for at least 10 ms and then releasing it triggers a module reset.
- nRESET is intended for emergency or production-line reset only. In normal operation, prefer the AT-level reset commands.
- The pin may be left floating in production designs that do not use it.
AT reset commands
| Command | Effect |
|---|---|
AT%RST | Software reset. The module restarts and re-enters System ON. |
AT+CFUN=1,1 | 3GPP TS 27.007 reset. Restarts the modem. |
AT%FACTORYRESET | Reset all user-configurable settings to factory defaults, then restart. |
AT%POWD | Enter System Disabled. Only POWERKEY can wake the module afterwards. |
Note: A reset does not clear the System OFF configuration. See the warning in 4.3.2.