ST UM2960, User Manual

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Signal Connector Pin number
STM32 Nucleo board
(MCU port)
X-NUCLEO-NFC07A1
expansion board
GND
CN5 Digital
7 - GND
D13 6 PA5 -
D12 5 PA6 ST25DV_GPO
D11 4 PA7 -
D10 3 PB6 -
D9 2 PC7 -
D8 1 PA9 -
D7
CN9 Digital
8 PA8 -
D6 7 PB10 -
D5 6 PB4 MCU_LED1
D4 5 PB5 MCU_LED2
D3 4 PB3 -
D2 3 PA10 MCU_LED3
D1 2 PA2 -
D0 1 PA3 -
2.1 Power supply and GPIO connection options
2.1.1 Power supply option
The on-board jumper (ST1) allows the user to select the ST25DV power source: external (the power supply of the
STM32 Nucleo development board) or ST25DV energy harvesting, indicated on the board silkscreen with 3.3 V
and EH, respectively.
2.1.2 GPIO option
You can disconnect the ST25DV_GPO optional signal from the STM32 Nucleo development board by removing
R1.
The same option applies to the lines driving the three general-purpose LEDs (MCU_LED1, MCU_LED2, and
MCU_LED3) that can be dedicated to other purposes (by removing R2, R3 and R4, respectively).
In case you modify these connections, update the firmware to enable proper use of the
STM32 Nucleo resources.
UM2960
Power supply and GPIO connection options
UM2960 - Rev 2
page 4/15