X-NUCLEO-53L1A1 expansion board
UM2359
10/17
DocID031498 Rev 1
3.3
Solder drop configurations
Solder drops allow the following configurations of the X-NUCLEO-53L1A1 expansion board:
•
If the developer wants to make an application with several expansion boards stacked
and there is:
–
conflict with the microcontroller port allocation, the GPIO1 can be output on the
CN8/A4 (U17
fitted) of the Arduino connector. The default configuration is that
GPIO1 is output on the CN8/A2 (U14 fitted) of the Arduino connector.
–
conflict on the I2C addresses, the addresses of the STMPE1600 can be modified
(the default addresses A2, A1, A0, 000, and 001).
•
If the developer wants to connect breakout boards (see
Figure 5
) to the X-NUCLEO-
53L1A1 expansion board:
–
the VL53L1X interrupt of the left breakout board can be output on the CN5/D9
(U10 fitted) or CN5/D8 (U11 fitted) of the Arduino connector. By default, the U10
and U11 are not fitted.
–
the VL53L1X interrupt of the right breakout board can be output on the CN9/D4
(U15 fitted) or CN9/D2 (U18 fitted) of the Arduino connector. By default, the U15
and U18 are not fitted.
–
the VL53L1X interrupts of the left and right breakout boards, GPIO1_L and
GPIO1_R, can be shared with the VL53L1X interrupt on the main board, GPIO1,
by fitting
U7 and U8 solder drops. By default U7 and U8 are not fitted.
PB1
Push button
U22
TPS3838K33
TI
Supervisory circuit
GPIO expander
C14, C15
100 nF
Supply decoupling capacitor
Table 5. List of materials (continued)
Components
Value
Reference
Supplier
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