Sim2 M80 Specifikace stáhnout pdf (Strana 64)

M80 Hardware Design

M80_HD_V1.0 - 64 -

IO Connector

USB_DM

USB_DP

GND

Module (DCE)

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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

Function

ADC0

Analog to digital converter.

ADC1

Analog to digital converter.

Table 20: Characteristics of the ADC

Item

Min

Typ

Max

Units

Voltage Range

2.8

ADC Resolution

bits

ADC Accuracy

2.7

3.17. Behaviors of the RI

Quectel

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Sim2 M80 Specifikace Strana 64