Table of Contents
Advertisement
CLM920 TD3 LTE Module Hardware Usage Guide
Pin
Signal name
6
NET_STATUS
status
No service
Module registration on non-4G network
The module registers 4G network or module to register
non-4G network for voice SMS and other services.
LED network indicator reference design is as follows：
The brightness of the network indicator can be adjusted by adjusting the current limiting
resistor R. The current can be adjusted up to 40mA.
3.10 Module status indication
The CLM920 TD3 module provides a pin as a working status indicator of the module.
This pin can be used to connect to a GPIO or LED with pull-up. It is used to indicate the
power-on status of the module. The drive current should be less than 0.8mA. , STATUS pin
will output low level, and the rest will be high impedance state.
Pin
Signal name
61
STATUS
Shanghai Yuge Information Technology co., LTD
Table 3-15 Network indicator pin definition
I/O
OD
Table 3-16 Network indication status
Figure 3-18 Network indicator circuit diagram
Table 3-17 Module Status Pin Definitions
I/O
Description
DO
Module power on status indication
Description
Network status indication
LED display status
Constantly bright
Slow flash
Flashing
Remarks
External pull-up
- 43 -
Advertisement
Table of Contents
