HARDWARE AND SPECIFICATIONS
20
MultiConnect
®
Dragonfly
™
Nano MTQN-MNG1-B01 Device Guide
WARNING:
If your application is using the on board flash memory part, make sure any flash accesses are complete
before removing power or the memory may be corrupted.
Cellular Radio Low Power
Note:
Refer to the U-blox AT command guide for details on AT commands.
1.
Powering Down - See Powering Down The Cellular Radio section
2.
PSM mode- AT+CPSMS command
3.
eDRX- AT+CEDRXS command
4.
Device functionality- AT+CEDRXS command
Power to Cellular Radio
After power down, RADIO_PWR can be configured as an analog input with no pull resistor to disable the power
supply regulator that powers the radio. There is an on board resistor that sets the RADIO_PWR signal level so that
the regulator is disabled.
On Board Flash Memory
After power down, RADIO_PWR can be configured as an analog input with no pull resistor to disable the power
supply regulator that powers the radio. There is an on board resistor that sets the RADIO_PWR signal level so that
the regulator is disabled.
Level translator
BUF_EN can be configured as an analog input with no pull resistor to disable the level shifter. There is an on board
resistor that sets the BUF_EN signal level so power is removed.
STM32L471QG processor
See the STM32L471QG data sheet for low power modes.
Installing a SIM Card
Note:
All Dragonfly™ Nano models require the use of a Micro SIM (3FF) card.
To install the SIM card:
Refer to the image below.
Slide the SIM card completely into the SIM holder.
