Quectel NB-IoT Series - Block Diagram

NB-loT Module Series
BC660K-GL-TE-B User Guide
BC660K-GL-TE-B_User_Guide 10 / 30
1.
1)
Within operating temperature range, the module is 3GPP compliant.
2.
2)
Within extended temperature range, the module maintains functions such as SMS and data
transmission, without any unrecoverable malfunction. Radio spectrum and radio network will not be
influenced, while one or more specifications, such as Pout, may exceed the specified tolerances of
3GPP. When the temperature returns to the normal operating levels, the module will meet 3GPP
specifications again.
3. “*” means under development.
2.2. Block Diagram
BC660K-GL
U101
Micro USB
J301
USB-UART
Bridge
U301
Switch
J302
J308
DC-DC U201
USIM
J303
ANT_RF
J304
J306
Arduino
LDO U203
U303/U304
Voltage-level
Translator
LDO U202
DC JACK
J206
Figure 1: Block Diagram of BC660K-GL-TE-B
Debug UART (USB Serial Converter C):
⚫ Used for debugging, where the baud rate is 6 Mbps by default.
Arduino Interface
Used for connection with the STM32 Nucleo-64 development board
RESET Button
Used to reset the BC660K-GL module
BOOT Button
Make the module enter download mode
PSM_EINT Button
Wake up the module from Deep Sleep/Light Sleep mode
Physical Characteristics
Size: (70.0 ±0.15) mm × (74.0 ±0.15) mm × (1.6 ±0.2) mm
Firmware Upgrade
⚫ Upgrade firmware via the main UART port
⚫ Upgrade firmware via DFOTA
Antenna Interface
50 Ω characteristic impedance
SMS*
Text and PDU mode
NOTES