X-NUCLEO-53L0A1 expansion board

UM2047

10/16

DocID029189 Rev 2

3.3

Solder drop configurations

Solder drops allow the following configurations for X-NUCLEO-53L0A1 boards:

•

In case the developer wants to do an application with several expansion boards

superposed and:

–

there is a conflict on microcontroller port allocation, the GPIO1 can be outputted

on CN8/A4 (U17 fitted) of the Arduino connector. The default configuration is

GPIO1 is outputted on CN8/A2 (U14 fitted) of the Arduino connector.

–

there is a conflict on I2C addresses, the addresses of the STMPE1600 can be

modified.(default addresses A2,A1,A0: 000 and 001).

•

In case the developer wants to connect satellites (see Figure 5):

–

the VL53L0X interrupt of the left satellite board can be outputted on CN5/D9 (U10

fitted) or CN5/D8 (U11 fitted) of the Arduino connector. By default U10 and U11

are not fitted.

–

the VL53L0X interrupt of the right satellite board can be outputted on CN9/D4

(U15 fitted) or CN9/D2 (U18 fitted) of the Arduino connector. By default U15 and

U18 are not fitted.

–

the VL53L0X interrupts of left and right satellite boards, GPIO1_L and GPIO1_R,

can be shared with the VL53L0X interrupt on the main board, GPIO1, by fitting U7

and U8 solder drops. By default U7 and U8 are not fitted.

R60

0

Delay time setting (def = 10ms)

PB1

Push-button

U22

TPS3838K33

TI

Supervisory circuit

GPIO expander and 4 digit-7 segment display application

C14, C15

100nF

Supply decoupling capacitor

DISPLAY1

KHN40365AG1D

Kohon

R24,R25, R26, R27, R29,

R31, R33, R36, R37, R38,

R39, R40, R41, R42, R44,

R47, R48, R50, R51, R52,

R55, R56, R57, R58, R59,

R61, R62, R63

470

Segment current setting

U19, U21

STMPE1600

ST

GPIO expander for VL53L0X

XSHUT signals and

4 digit / 7 segment display

Table 5. List of materials (continued)

Components

Value

Reference

Supplier

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