Quectel BC66-NA-TE-B User Manual page 10

Arduino Interface
RESET Button
PWRKEY Button
Physical Characteristics
Firmware Upgrade
Antenna Interface
NOTES
1)
1. Within operation temperature range, the module is 3GPP compliant.
2)
2. Within extended temperature range, the module remains the ability to establish and maintain
functions such as SMS*, data transmission, etc., without any unrecoverable malfunction. Radio
spectrum and radio network will not be influenced, while one or more specifications, such as P
may exceed the specified tolerances of 3GPP. When the temperature returns to the normal operation
temperature levels, the module will meet 3GPP specifications again.
"*" means under development.
3.
BC66-NA-TE-B_User_Guide
automatic baud rates not exceeding 115200bps. When powering on
the module, the MCU has to send AT command consecutively to
synchronize baud rate with the module. When OK is returned, it
indicates the baud rate has been synchronized successfully. When
the module is woken up from light or deep mode, the baud rate
synchronized during start-up will be used directly.

Also can be used for firmware upgrade, and in such case, the baud
rate is 921600bps by default.
Auxiliary UART (Interface1):

Used for firmware debugging

Default baud rate: 115200bps
Debug UART (Interface2):

Used for firmware debugging

Default baud rate: 115200bps
Reserved UART (Interface3)
Used for connection with STM32 Nucleo-64 development board
Used to reset BC66-NA module
Used to turn on BC66-NA module
Size: (70.0± 0.15)mm × (74.0± 0.15)mm
Firmware upgrade via main UART port or DFOTA
50Ω characteristic impedance
NB-IoT Module Series
BC66-NA-TE-B User Guide
9 / 27
,
out