STMicroelectronics Nucleo Development Board for STM32 Microcontrollers NUCLEO-F103RB NUCLEO-F103RB Data Sheet

DocID025833 Rev 3

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The STMicroelectronics Morpho connector consists in male pin headers (CN7 and CN10) 
accessible on both sides of the board. They can be used to connect the STM32 Nucleo 
board to an extension board or a prototype/wrapping board placed on top or on bottom side 
of the STM32 Nucleo board. All signals and power pins of the MCU are available on 
STMicroelectronics Morpho connector. This connector can also be probed by an 
oscilloscope, logical analyzer or voltmeter.

Morpho connector.

1

PC10

PC11

2

1

PC9

PC8

2

3

PC12

PD2

4

3

PB8

PC6

4

5

VDD

E5V

6

5

PB9

PC5

6

7

BOOT0

(1)

1. Default state of BOOT0 is 0. It can be set to 1 when a jumper is on pin5-7 of CN7.

GND

8

7

AVDD

U5V

(2)

2. U5V is 5

 

V power from ST-LINK/V2-1 USB connector and it rises before +5V.

8

9

PF6

-

10

9

GND

PD8

10

11

PF7

IOREF

12

11

PA5

PA12

12

13

PA13

(3)

3. PA13 and PA14 share with SWD signals connected to ST-LINK/V2-1, it is not recommend to use them as 

IO pins if ST-LINK part is not cut.

RESET

14

13

PA6

PA11

14

15

PA14

+3V3

16

15

PA7

PB12

16

17

PA15

+5V

18

17

PB6

PB11

18

19

GND

GND

20

19

PC7

GND

20

21

PB7

GND

22

21

PA9

PB2

22

23

PC13

VIN

24

23

PA8

PB1

24

25

PC14

-

26

25

PB10

PB15

26

27

PC15

PA0

28

27

PB4

PB14

28

29

PF0

PA1

30

29

PB5

PB13

30

31

PF1

PA4

32

31

PB3

AGND

32

33

VBAT

PB0

34

33

PA10

PC4

34

35

PC2

PC1 or 
PB9

(4)

4. Please refer to 

 for detail

36

35

PA2

PF5

36

37

PC3

PC0 or 
PB8

38

37

PA3

PF4

38