LE915Ax-P
Hardware Design Guide
1VV0301680 Rev. 2
Page 27 of 51
2021-10-04
Not Subject to NDA
Pin
Signal
I/O
Function description
73
GPIO_5
I/O
1.8V, 8mA
Table 15: Available GPIO
LED Indication
The downlink status indicator output is provided to indicate. Refer to the typical non-
inverting type LED driver circuit below.
Table 16: LED indication
Figure 8: LED Indicator Reference Schematic
External SIM Holder
LE915Ax-P modules support single SIM interface
.
On the application side, a pull-up resistor needs to be connected to the SIM_DETECT port:
Logic HIGH indicates a SIM is plugged in. Therefore, it is necessary to apply a SIM holder
providing that provides a closed circuit to GND when a SIM is not inserted.
Pin
Signal
I/O
Function description
18
NETWORK_LED
O
Active LOW indicates when packets go through network interface.
