STMicroelectronics Nucleo Development Board for STM32 Microcontrollers NUCLEO-F103RB NUCLEO-F103RB Fiche De Données

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turned OFF. In such case it is mandatory to use an external power supply as explained in 
the next chapter. 

When the board is power supplied by USB (U5V) a jumper must be connected between pin 
1 and pin 2 of JP5 as shown in 

.

JP1 is configured according to the maximum current consumption of the board when 
powered by USB (U5V). JP1 jumper can be set only in case the board is powered by USB 
and maximum current consumption on U5V doesn’t exceed 100mA (including an eventual 
extension board or Arduino Shield). In such condition USB enumeration will always succeed 
since no more than 100mA is requested to the PC. Possible configurations of JP1 are 
summarized in 

.

          

The external power sources VIN and EV5 are summarized in the 

 When the board is 

power supplied by VIN or E5V, the jumpers configuration must be the following:

Jumper on JP5 pin 2 and pin 3
Jumper removed on JP1

          

JP1 jumper OFF

USB power through CN1

300

 mA 

max

JP1 jumper ON

100

 mA 

max

VIN

CN6 pin 8 
CN7 pin 24

7  V to 12

 V

800

 mA

From 7 V 

to 

12

 

V only and input current capability 

is linked to input voltage:
800

 

mA input current when Vin=7

 

V

450

 

mA input current when 7

 

V<Vin (< or =) 9

 

V

250

 

mA input current when 9

 

V<Vin (< or =) 12

 

V

E5V

CN7 pin 6

4.75

 V 

to 

5.25

 

V

500

 mA