LPWA Module Series
BG950A-GL&BG951A-GL_Hardware_Design
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Table 21: Characteristics of ADC Interfaces
4.6. Indication Signals
4.6.1. PSM Status Indication
Table 22: Pin Definition of PSM_IND
When PSM is enabled, the function of PSM_IND will be activated after the module is rebooted. When
PSM_IND is in high level, the module is in normal operation state. When it is in low level, the module is in
PSM.
Name
Min.
Typ.
Max.
Unit
Voltage Range
0
-
1.8
V
Resolution
6
-
12
bit
1. ADC input voltage must not exceed 1.8 V.
2. It is prohibited to supply any voltage to ADC pin when VBAT is removed.
3. It is recommended to use resistor divider circuit for ADC application, and the divider’s resistor
accuracy should be no less than 1 %.
4. After the module is turned off or enters PSM, do not pull up any pin of ADC interfaces. Otherwise,
the module will have additional power consumption and may have damaged pins.
Pin Name Pin No.
I/O Description
Comment
PSM_IND
1
DO
Indicate the module’s power
saving mode
1.8 V power domain.
If this pin is unused, keep this pin open.
NOTE
