Quectel UC200T-EM Hardware Design page 40

Table 18: Pin Definition of Network Connection Status/Activity Indicator
Pin Name Pin No.
NET_MODE 5
NET_STATUS 6
Table 19: Working State of the Network Connection Status/Activity Indicator
Pin Name Logic Level Changes
Always High
NET_MODE
Always Low
Flicker slowly (200ms High/1800ms Low)
Flicker slowly (1800ms High/200ms Low)
NET_STATUS
Flicker quickly (125ms High/125ms Low)
Always High
A reference circuit is shown in the following figure.
UC200T-EM_Hardware_Design
I/O Description
Indicate the module network
DO
registration mode.
Indicate the module network
DO
activity status.
Module
Network
Indicator
Figure 17: Reference Circuit of the Network Indicator
UMTS/HSPA(+) Module Series
UC200T-EM Hardware Design
Network Status
Registered on UMTS network
Others
Network searching
Idle
Data transfer is ongoing
Voice calling
VBAT
2.2K
4.7K
47K
Comment
1.8V power domain
If unused, keep it open
1.8V power domain
If unused, keep it open
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