ST X-NUCLEO-GNSS2A1, User Manual, Page: 7 / 21

Table 5. X-NUCLEO-GNSS2A1 expansion board: Teseo-VIC3DA interface with the STM32 Nucleo
development board
Signal Pins STM32 Nucleo (optional connections)
I²C-SCL d15 -
I²C-SDA d14 -
Wakeup d13 d4
Reset d7 d9
PPS d6 d2
UART-RX d8 d1
UART-TX d2 d0
For the optional connections, modify the firmware according to the STM32 resources to be used.
2.5 Current measurement
To monitor the Teseo-VIC3DA module power consumption, insert an ammeter probe between J14 pin (VCC) and
J15 pin (VBAT).
As the
Teseo-VIC3DA power consumption is very low during most of its operating time, an accurate instrument in
the range of few μA is required.
2.6 ODO connector
The ODO connector on the X-NUCLEO-GNSS2A1 exposes two input signals for the Teseo-VIC3DA , which
embeds the TESEO dead reckoning. These two signals are specific to dead-reckoning applications and provide
the odometer information using the pins FWD (pin2) and WHEELTICK (pin3).
UM3020
Current measurement
UM3020 - Rev 1
page 7/21