1.1.1
I-NUCLEO-LRWAN1 LoRa
®
HF band and sensor expansion board
The
is supplied by a third party (USI
®
). For complete and latest information, refer to the third
party GitHub page https://github.com/USILoRaModule/USI_I-NUCLEO-LRWAN1.
Figure 4.
I-NUCLEO-LRWAN1 block diagram and connectors
XTAL
32 MHz
SX1272
(860 MHz – 1020 MHz)
STM32L052T8Y6
64-Kbyte Flash
8-Kbyte RAM
2-Kbyte EEPROM
SPI1
RESET
DIO 0-4
Antenna
RFI
VR_PA
R
F S
W
IT
C
H
PA_BOOST
U
.F
L
XTAL
32.768 kHz
ANT TX/RX
ADC 1 – 3
Note:
The Nucleo board communicates with the expansion board via the STM32 UART (PA2, PA3). The following
modifications are applied to the Nucleo board:
•
SB62 and SB63 are closed
•
SB13 and SB14 are opened to disconnect the STM32 UART from ST-LINK
UM2587
Sensor hardware overview
UM2587
-
Rev 3
page 5/55
