LTE Standard Module Series
EC21_Series_Hardware_Design
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3.18. STATUS
The STATUS pin is an open drain output for indicating the module’s operation status. It can be
connected to a GPIO of DTE with a pull-up resistor, 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.
Table 22: Pin Definition of STATUS
Pin Name Pin No. I/O Description Comment
STATUS 61 OD
Indicate the module’s
operation status
The driving current should be less than
0.9 mA.
An external pull-up resistor is required.
If unused, keep it open.
The following figure shows different circuit designs of STATUS, and customers can choose either one
according to customers’ application demands.
Figure 30: Reference Design of STATUS
The status pin cannot be used as indication of module shutdown status when VBAT power supply is
removed.
NOTE
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