LTE Module Series
EC25-V User Manual
EC25-V_User_Manual Confidential / Released 41 /
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3.13. ADC Function
The module provides two analog-to-digital converters (ADC). Using AT command
AT+QADC=0
can read
the voltage value on ADC0 pin. Using AT command
AT+QADC=1
can read the voltage value on ADC1
pin. For more details of these AT commands, please refer to
document [2]
.
In order to improve the accuracy of ADC, the trace of ADC should be surrounded by ground.
Table 15: Pin Definition of the ADC
Pin Name
Pin No.
Description
ADC0
45
General purpose analog to digital converter
ADC1
44
General purpose analog to digital converter
The following table describes the characteristic of the ADC function.
Table 16: Characteristic of the ADC
Parameter
Min.
Typ.
Max.
Unit
ADC0 Voltage Range
0.3
VBAT_BB
V
ADC1 Voltage Range
0.3
VBAT_BB
V
ADC Resolution
15
bits
3.14. Network Status Indication
The network indication pins can be used to drive a network status indicator LED. The module provides
two pins which are NET_MODE and NET_STATUS. The following tables describe pin definition and logic
level changes in different network status.
Table 17: Pin Definition of Network Indicator
Pin Name
Pin No.
I/O
Description
Comment
NET_MODE
5
DO
Indicate the module network registration 1.8V power domain
