Quectel NB-IoT Series - Page 22

NB-loT Module Series
BC660K-GL-TE-B User Guide
BC660K-GL-TE-B_User_Guide 21 / 30
The following figure shows the pin connection between BC660K-GL-TE-B and STM32-L476RG MCU.
UART_MCU_RX
RESET_EN
BOOT_N
PSM_EINT_N
UART_MCU_TX
GND
+5 V
RI
GND
GND
BC660K-GL-TE-B
Morpho
Arduino
+3.3 V
+3.3 V
Figure 10: Pin Connection between BC660K-GL-TE-B and STM32-L476RG MCU
5
PA6
D12
CN5-5
BOOT_N
Active high
6
PA5
D13
CN5-6
RESET_EN
Active high
7
PA0
A0
CN8-1
RI
Ring indicator
8
+5 V
+5 V
CN6-5
+5 V
5.0 V power supply
9
GND
GND
CN5-7, CN6-6, 7
GND
GND
10
+3.3 V
+3.3 V
CN6-4
+3.3 V
3.3 V power supply
11
+3.3 V
IOREF
CN6-2
+3.3 V
3.3 V power supply