LPWA Module Series
BG95 Hardware Design
BG95_Hardware_Design 52 / 80
Table 23: Characteristics of ADC Interfaces
1. ADC0 and ADC1 cannot be used simultaneously. BG95 supports using of only one ADC interface at
a time: either ADC0 or ADC1. Currently only ADC0 is enabled, and ADC1 will be enabled in the next
hardware design version.
2. ADC input voltage must not exceed 1.8V.
3. It is prohibited to supply any voltage to ADC pin when VBAT is removed.
4. It is recommended to use resistor divider circuit for ADC application, and the divider resistor accuracy
should be no less than 1%.
3.17. GPIO Interfaces
The module provides six general-purpose input and output (GPIO) interfaces.
AT+QCFG=
"
gpio
"
*
command can be used to configure corresponding GPIO pin’s status. For more details about the AT
command, please refer to
document [2]
.
Table 24: Pin Definition of GPIO Interfaces
Parameter
Min.
Typ.
Max.
Unit
ADC0/ADC1 Voltage Range
0.3
1.8
V
ADC0/ADC1 Resolution
64.979
uV
ADC0/ADC1 Sampling Rate
4.8
MHz
Pin Name
Pin No.
Description
GPIO16 16
General-purpose
input and output interface
GPIO25 25
General-purpose
input and output interface
GPIO26
26
General purpose input and output interface
GPIO64
64
General purpose input and output interface
GPIO65
65
General purpose input and output interface
GPIO66
66
General purpose input and output interface
NOTES