CLM920_RC3(RV3 RE3)LCC Series CAT1 Module Hardware Manual
Shanghai YUGE Information Technology Co., Ltd.
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3.13 ADC interface
CLM920_RC3 provides two analog-to-digital converter interfaces to read the voltage value.
The input voltage of the ADC interface cannot exceed 1.2V. It is recommended that the ADC
pin be input with a voltage divider circuit.
Table 3-25 Definition of ADC pins
Pin
Signal
name
Description
Level value (V)
Remarks
Min
Typical
Max
44
ADC1
A/D converter interface 1
0
1.2V
12bits
resolution
45
ADC0
A/D converter interface 0
0
1.2V
12bits
resolution
3.14 WiFi SCAN
CLM920_RC3 module provides WiFi Scan function (used for WIFI positioning).
When the WiFi Scan is turned on, the module scans and collects the surrounding AP signals,
regardless of whether they are encrypted or connected, and even if the AP signal strength is
not enough to be displayed in the wireless signal list, the MAC address broadcast by the AP
can be obtained. The module then sends the collected corresponding data to the location
server. The server retrieves the geographic location of each AP and combines the strength of
each signal to calculate the geographic location of the module and returns it to the user to
implement the positioning service.
3.15 RF interface
The CLM920_RC3 module provides two antenna interfaces, one main antenna interface,
responsible for receiving and sending 4G and 2G signals of the module, receiving external
AP hotspot signals, and one GNSS antenna interface. Antenna interface characteristic
impedance is 50 ohms.
Table 3-26 Antenna interface pin definition
