ST X-NUCLEO-S2868A1, User Manual

Page: 5 / 18

3 Hardware description and configuration
3.1 Interconnection details
The X-NUCLEO-S2868A1 expansion board and the NUCLEO-F401RE or NUCLEO-L152RE board connection
details are listed in the table below.
Table 2. X-NUCLEO-S2868A1 and NUCLEO-L152RE connection details (left connector)
Signal name
NC IOREF RESE
T
3
V
3
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-S2868A1 expansion board signals
3
V
3
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-S2868A1 and NUCLEO-L152RE connection details (right connector)
Signal name
D15 D14 ARE
F
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
PB1
0
PB4 PB5 PB3 PA1
0
PA2 PA3
X-NUCLEO-S2868A1 expansion board signals
GND
SPI_
CLK
(
1)
SPI_
MIS
O
SPI_
MOS
I
SPI_
CSN
(
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 and S2-LP can be used to enable different
configurations in case a signal conflict occurs when using other expansion boards.
UM2405
Hardware description and configuration
UM2405
- Rev 1
page 5/19