Hardware description

UM1975

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DocID028608 Rev 1

Table 4: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (Arduino

UNO R3 Connector CN8 - Analog)

Signal

Name

A0

A1

A2

A3

A4

A5

Pin

1

2

3

4

5

6

MCU Name

PA0

PA1

PA4

PB0

PC1/ PB9

PC0/ PB8

Fcn

USART_CTS*

USART_RTS*

GPIO13*

Table 5: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 through

(Arduino UNO R3 Connector CN5 - Digital)

Signal

Name

D15

D14

AREF

GND

D13

D12

D11

D10

D9

D8

Pin

10

9

8

7

6

5

4

3

2

1

MCU Name

PB8

PB9

PA5

PA6

PA7

PB6

PC7

PA9

Fcn

I2C_

SCL#

I2C_

SDA#

GND

UART_

TX*

UART_

TX

Table 6: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 through

(Arduino UNO R3 Connectors CN9 - Digital)

Signal

Name

D7

D6

D5

D4

D3

D2

D1

D0

Pin

8

7

6

5

4

3

2

1

MCU Name

PA8

PB10

PB4

PB5

PB3

PA10

PA2

PA3

Fcn

UART_RX

USART_RX(1)

USART_TX(1)

Notes:

2.2

UART and GPIO connection options

As stated previously, the connection between the SPWF01SA and the STM32 Nucleo

boards is made via a four wire UART (with hardware flow control) and some GPIOs. A

multiple connection arrangement offers maximum modularity (See Table 4). The alternative

pins could be useful in case of conflicts with additional X-NUCLEO expansion boards.