Status - Quectel EC21 Series Hardware Design

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 a pull up resistor, or as the LED indication circuit shown below. When the module is
turned on normally, the STATUS will present the low state. Otherwise, the STATUS will present
high-impedance state.
Table 19: Pin Definition of STATUS
Pin Name Pin No.
STATUS 61
The following figure shows different circuit designs of STATUS, and you can choose either one according
to your application demands.
STATUS
Module
EC21_Hardware_Design
Module
Network
Indicator
Figure 25: Reference Circuit of the Network Indicator
I/O Description
OD Indicate the module's operation status
VDD_MCU
10K
MCU_GPIO
Figure 26: Reference Circuits of STATUS
VBAT
2.2K
4.7K
47K
STATUS
Module
Confidential / Released
LTE Module Series
EC21 Hardware Design
Comment
Require external pull-up
VBAT
2.2K
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