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The default MAIN_RI behaviors can be configured flexibly by AT+QCFG="urc/ri/ring"* command. For
more details about AT+QCFG, see document [3].
NOTE
A URC can be outputted from UART port, through configuration via AT+QURCCFG.
3.16. ADC Interfaces*
The module provides two analog-to-digital converter (ADC) interfaces. AT+QADC=0 can be used to read
the voltage value on ADC0 pin. AT+QADC=1 be used to read the voltage value on ADC1 pin. For more
details about the AT command, see document [4].
To improve the accuracy of ADC voltage values, the trace of ADC should be surrounded with ground.
Table 21: Pin Definition of ADC Interfaces
Pin Name
Pin No.
ADC0
17
ADC1
18
The following table describes the characteristics of ADC interfaces.
Table 22: Characteristics of ADC Interfaces
Parameter
Voltage Range
Resolution
Input Resistance
BG770A-GL_Hardware_Design
I/O
Description
AI
General-purpose ADC interface
AI
General-purpose ADC interface
Min.
0
6
BG770A-GL Hardware Design
Typ.
Max.
1.8
12
0.5
LPWA Module Series
Unit
V
bit
kΩ
47 / 75
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