Specifications

M80 Hardware Design
M80_HD_V1.0 - 64 -
IO Connector
USB_DM
USB_DP
GND
Module (DCE)
DOWNLOAD
PWRKEY
GND
USB_DM
USB_DP
Figure 37: Connection of USB download
3.16. ADC
The module provides two ADC to measure the value of voltage. Use AT command “AT+QADC”
to read the voltage value on ADC1 pin. Use AT command “AT+QEADC” to read the voltage
value on ADC0 pin. For details of this AT command, please refer to document [1]. In order to
improve the accuracy of ADC, the alignment of ADC should be surrounded by ground.
Table 19: Pin definition of the ADC
Name
Pin
Function
ADC0
2
Analog to digital converter.
ADC1
1
Analog to digital converter.
Table 20: Characteristics of the ADC
Item
Min
Typ
Max
Units
Voltage Range
0
2.8
V
ADC Resolution
10
bits
ADC Accuracy
2.7
mV
3.17. Behaviors of the RI
Quectel
Confidential