Power Supply Voltage Monitoring; Turn On - Quectel EG060K Series Hardware Design

DC_IN
470 μF
100 nF
NOTE
To avoid internal flash damage, do not switch off the power supply when the module works normally.
The power supply can only be cut off after the module is shut down by PWRKEY or AT commands.

3.2.3. Power Supply Voltage Monitoring

AT+CBC command can monitor the VBAT_BB voltage value. See document [4] for details.

3.3. Turn On

The module can be turned on via PWRKEY.
Table 10: PWRKEY Pin Description
Pin Name Pin No.
PWRKEY 2
When the module is in power down mode, it can be turned on by driving PWRKEY low for at least
500 ms. It is recommended to control PWRKEY with an open drain/collector driver. After STATUS
outputs a high level, PWRKEY can be released. A simple reference circuit is given below.
EG060K &EG120K _Series_Hardware_Design
103
MIC29302WU
2
IN
51K
4.7K
VBAT_EN
47K
Figure 10: Reference Circuit of Power Supply
I/O Description
DI Turn on/off the module
4
OUT
100K
1 %
470R
47K
1 %
DC Characteristics
V max = 2.1 V
IH
V min = 1.3 V
IH
V max = 0.5 V
IL
LTE-A Module Series
VBAT
470 μF
100 nF
Comment
1.8 V power domain.
Pulled-up internally.
Active low.
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