MeiG_SLM320_Hardware Design Manual
MeiG Smart Technology Co., Ltd
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After that, when the DTR is set high or the wakeup pin is set low, and no interrupt is generated (such as
GPIO interrupt or serial port data transmission), the GSM part will automatically enter the deepsleep
mode.
At + CSCLK =2: when no interrupt is generated, the GSM part will automatically enter deepsleep mode.
3.11.3 Ultra low power mode
Use the following AT instruction to put the module into ultra-low power mode (for power test).
AT^TRACECTRL=0,0;
AT^TRACECTRL=1,0;
AT+CSCLK=2;
3.12 ADC Function
SLM320 provides a Two-way 12-bit analog-digital conversion interface, and the ADC voltage range is
0-5V
Table 17 ADC pin description
Pin Name
I/O
Pin
Description
ADC0
I
45
Analog to digital converter interface 0
ADC1
I
44
Analog to digital converter interface
1
ADC2*
I
43
Analog to digital converter interface 2
Remark:
1.
In the case that VBAT is not powered, the ADC interface cannot directly connect any input voltage.
2.
It is recommended that the ADC pin be input with voltage divider circuit.
3.
It is suggested that ADC should be wrapped when wiring, which can improve the accuracy of ADC
voltage measurement.
