Quectel BC660K-GL - GPIO Interfaces

NB-IoT Module Series
BC660K-GL Hardware Design
BC660K-GL_Hardware_Design 33 / 57
Table 15: RI Signal Status
Module Status
RI Signal Level
Standby
High
URC/Message
Arrives
Low for at least 120 ms before starting data output.
RI
HIGH
LOW
Idle
At least
120 ms
A URC or SMS message is received
Output data
Figure 17: RI Behaviour When a URC/Message is Received
3.11. GPIO Interfaces
The module provides four general-purpose input and output (GPIO) interfaces. AT+QCFG="gpio"
command can be used to configure the status of the GPIO pins. For more details about the AT command,
see document [2].
Table 16: Pin Definition of GPIO Interfaces
Pin Name
Pin No.
Description
GPIO1
3
General-purpose input/output
GPIO2
4
General-purpose input/output
GPIO3
5
General-purpose input/output
GPIO4
6
General-purpose input/output