NB-IoT Module Series
BC95 Hardware Design
BC95_Hardware_Design Confidential / Released 28 / 51
as to suppress EMI spurious transmission and enhance ESD protection. Please note that the USIM
peripheral circuit should be close to the USIM card connector.
Place the RF bypass capacitors (33pF) close to the USIM card on all signals traces to improve EMI
suppression.
3.10. ADC Interface*
The module provides a 10-bit ADC input channel to read the voltage value. This ADC interface is
available in active mode and idle mode.
Table 11: Pin Definition of the ADC
“*” means under development.
3.11. Behaviors of RI*
When an SMS message is received or certain URCs are reported, RI pin will be triggered. The behaviors
of RI are shown as below.
Table 12: Behaviors of RI
State
RI Response
Idle
HIGH
SMS*
When an SMS message is received, the RI is changed to LOW and kept at low level
for about 120ms. Then it is changed to HIGH.
URC
Certain URCs can trigger RI to LOW for 120ms. Then it is changed to HIGH.
Pin Name
Pin No.
Description
ADC
21
Analog to digital converter interface
NOTE
Quectel
Confidential
