User's Manual

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LTE Module
EC25-A User Manual
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mode.
NET_STATUS
6
DO
Indicate the module network activity
status.
1.8V power domain
Table 18: Working State of the Network Indicator
Pin Name
Status
Description
NET_MODE
Always High
Registered in LTE network
Always Low
Others
NET_STATUS
Flicker slowly (200ms High/1800ms Low)
Network searching
Flicker slowly (1800ms High/200ms Low)
Idle
Flicker quickly (125ms High/125ms Low)
Data transfer is ongoing
Always High
Voice calling
A reference circuit is shown in the following figure.
4.7K
47K
VBAT
2.2K
Module
Network
Indicator
Figure 25: Reference Circuit of the Network Indicator
3.15. STATUS
The STATUS pin is an open drain output for indicating the module’s operation status. You can connect it
to a GPIO of DTE with pulled up, or as LED indication circuit as below. When the module is turned on
normally, the STATUS will present the low state. Otherwise, the STATUS will present high-impedance
state.