ST X-NUCLEO-S2868A2, User Manual

Page: 5 / 19

3 Hardware description and configuration
3.1 Interconnection details
The X-NUCLEO-S2868A2 expansion board and the NUCLEO-F401RE or NUCLEO-L152RE board connection
details are listed in the table below.
Table 2. X-NUCLEO-S2868A2 and NUCLEO-L152RE connection details (left connector)
Signal name
NC IOREF RESET 3V3
5
V
GND GND VIN A0 A1 A2 A3 A4 A5
Connector name
CN6 Power CN8 Analog
Pin number
1 2 3 4 5 6 7 8 1 2 3 4 5 6
NUCLEO-L152RE MCU port
PA0 PA1 PA4 PB0 PC1 PC0
X-NUCLEO-S2868A2 expansion board signals
3V3 GND GND GPIO0 CSN GPIO1 GPIO2
GPIO0
(1
)
GPIO3
1. Used to enable different configurations in case a signal conflict occurs when using other expansion board
(refer to next section).
Table 3. X-NUCLEO-S2868A2 and NUCLEO-L152RE connection details (right connector)
Signal name
D15 D14 AREF GND D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Connector name
CN5 Digital CN9 Digital
Pin number
10 9 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1
NUCLEO-L152RE MCU port
PB8 PB9 PA5 PA6 PA7 PB6 PC7 PA9 PA8 PB10 PB4 PB5 PB3 PA10 PA2 PA3
X-NUCLEO-S2868A2 expansion board signals
GND
SPI_C
LK
(1)
SPI_MI
SO
SPI_M
OSI
SPI_C
SN
(1)
nS
(1) SDN SDN (1) nS
SPI_
CLK
1. Optional connection
3.2 SPI and GPIO connection options
The SPI and GPIO connection options between the STM32 Nucleo and S2-LP can be used to enable different
configurations in case a signal conflict occurs when using other expansion boards.
UM2638
Hardware description and configuration
UM2638 - Rev 1
page 5/19