Quectel BC66 - ADC Interface; RI Interface

NB-IoT Module Series
BC66 Hardware Design
BC66_Hardware_Design 34 / 59
3.11. ADC Interface
The module provides a 10-bit ADC input channel to read the voltage value. The interface is available in
active mode only. In sleep modes, the module has to be woken up first to ensure the availability of the
interface.
Table 14: Pin Definition of ADC Interface
Please refer to AT+QADC command for detailed usage of the interface function.
3.12. RI Interface
When there is a message received or URC output, the module will notify DTE through the RI interface.
Table 15: RI Signal Status
Module Status
RI Signal Level
Idle
RI keeps in high level
SMS
When an SMS is received, RI outputs 120ms low pulse and starts data output.
URC
When an URC is incoming, RI outputs 120ms low pulse and starts data output.
HIGH
RI
Output data
LOW
dt
120ms
dt > 1ms, normally 10ms
Figure 22: RI Behaviour When URC or a SMS Message Received
Pin Name
Pin No.
Description
Sample Range
ADC0
9
Analog to digital converter interface
0V ~ 1.4V
NOTE