ST X-NUCLEO-6283A1 User manual

Introduction

This document provides detailed hardware information on the X-NUCLEO-6283A1 expansion board. This expansion board is

compatible with the STM32 Nucleo family and the Arduino® electronic boards. It is designed around the VD6283 multispectral

sensor and is based on ST’s ambient light sensors.

The package is composed of the X‑NUCLEO-6283A1 expansion board itself.

Figure 1. X-NUCLEO-6283A1 expansion board

Table 1. Ordering information

Order code Description

X-NUCLEO-6283A1 STM32 Nucleo expansion board

Getting started with X-NUCLEO-6283A1 expansion board based on VD6283

6-channel ambient light sensor with flicker extraction

UM2858

User manual

UM2858 - Rev 1 - May 2021

For further information contact your local STMicroelectronics sales office.

www.st.com

1Overview

The X-NUCLEO-6283A1 expansion board features the VD6283 hybrid filter multispectral sensor, based on ST’s

ambient light sensors.

It is compatible with the STM32 Nucleo development board family, and with the Arduino UNO R3 connector

layout.

Several ST expansion boards can be stacked through the Arduino connectors, which allows, for example, the

development of VD6283 applications with Bluetooth or Wi-Fi interfaces.

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Overview

UM2858 - Rev 1 page 2/14

2Document references

Table 2. Document references

Description Doc ID

VD6283TX datasheet DS13735

X-Nucleo-6283A1 data brief DB4481

P-Nucleo-6283A1 data brief DB4484

X-Cube-ALS data brief DB4496

UM2858

Document references

UM2858 - Rev 1 page 3/14

3X-NUCLEO-6283A1 expansion board

This section describes the X-NUCLEO-6283A1 expansion board features and provides useful information for

understanding the electrical characteristics.

Figure 2. X-NUCLEO-6283A1 expansion board schematic diagram

3.1 Description

The board allows the user to test the VD6283 functionality, to program it and to understand how to develop an

application using the VD6283. It integrates:

• 1.8 V regulator to supply the VD6283

• Level translator to adapt the I/O level to the main board of the microcontroller

• Arduino UNO R3 connectors

• Solderdrops to allow different configurations of the expansion board

It is fundamental to program a microcontroller to control the VD6283 through the I2C bus. The application

software and an example of the C-ANSI source code are available on https://www.st.com/en/imaging-and-

photonics-solutions/vd6283tx.html

The X-NUCLEO-6283A1 expansion board and STM32 Nucleo development board are connected through the

Arduino UNO R3 connectors CN5, CN6, CN8, and CN9 as shown in the following figure and described in the

tables below.

The X-NUCLEO-6283A1 must be plugged to the STM32 Nucleo development board through the Arduino UNO R3

connectors.

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X-NUCLEO-6283A1 expansion board

UM2858 - Rev 1 page 4/14

Figure 3. X-NUCLEO-62832A1 expansion board connector layout

Table 3. Left Arduino connector

CNnumber VD6283 board Pin number Pin name MCU pin

X-

NUCLEO-6283A1

expansion board

function

CN6 power

Not used2 IOREF

3 RESET

Power 4 3V3 3V3 3.3 V supply

5 NC 5V Not used

GND

GND GND Ground

8 NC VIN Not used

CN8 analog

AFLR_ADC

1 A0 PAO Analog Flicker

information from

VD6283, to be

connected to Host

ADC input

2 A1 PA1

3 A2 PA4

INTR_ALS_3V3 4 A3 PB0

Interrupt signal

from VD6283

device

5 NC PC1

Not used

6 NC PC0

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Description

UM2858 - Rev 1 page 5/14

Table 4. Right Arduino connector

CNnumber VD6283 board Pin number Pin name MCU pin

X-

NUCLEO-6283A1

expansion board

function

CN5 digital

SCL 10 D15 PB8 I2C1_SCL

SDA 9 D14 PB9 I2C1_SDA

8 NC AVDD Not used

GND 7 GND GND Ground

6 NC PA5

Not used

5 NC PA6

4 NC PA7

3 NC PB6

2 NC PC7

1 NC PA9

CN9 digital

8 NC PA8

Not used

7 NC PB10

6 NC PB4

5 NC PB5

4 NC PB3

3 NC PA10

2 NC PA2

1 NC PA3

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Description

UM2858 - Rev 1 page 6/14

3.2 Electrical schematic

Figure 4. X-NUCLEO-6283A1 expansion board schematic

rorottaallugugeeRR 88VV11

CN6

CN5

CN8 CN9

A5 D0

D10

D11

D12

D13

GND

D14

AVDD

D15

IOREF

RESET

VIN

+3.3V

+5V

GND

SCL

SDA

GND

SCL

VS+

VOUT

GND

THERMAL

SCL_B

SCLA_A

VCCB

GND

SDA_A

SDA_B

VCCA

ADJ

VIN

GND

VIN-

VIN+

SDA

GPIO2

GPIO1

SCLVSS

SDA

VDD

1V8_DUT

VBUS

Alert

3V3_NUCLEO 3V3_NUCLEO

3V3_NUCLEO

3V3_NUCLEO 3V3_NUCLEO

1V8 3V3_NUCLEO

1V8|

1V8 1V8

1V8

3V3_NUCLEO

1V8|

1V8_DUT|

1V8|

1V8_DUT

3V3_NUCLEO 1V8

1V8

3V3_NUCLEO

GND R4

C6C5

R9R8

R7 C7

R10 C4

SB15

SB14

SB17

SB16

SB13

SB12

Standard and

fast-mode Fast-mode

plus

R15

C10

SB18

SB19SB21

SB20

TP4

TP5

R12

R14

R13

SB3 R1

TP2

SB5

SB10

SB7

TP1

TP3

1V8

C2 C3

GND

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Electrical schematic

UM2858 - Rev 1 page 7/14

3.3 List of materials

Table 5. List of materials

Components Value Reference Supplier Comments

VD6283 application

C2 1 uF

Supply voltage decoupling

C3 100 nF

C1 1 nF

AFLR ADC

R1 20 k

R2 20 k Interrupts pullup

U1 VD6283 ST VD6283 ALS Module

GPIO level translator

R4 0 R

C5 100 nF Supply decoupling capacitor

C6 100 nF Supply decoupling capacitor

U2 TXS0104EYZT TI Voltage level translator 4 BIT

I2C level translator

2.2 uF Standard and fast mode

SDA and SCL line pull up at 1.8 V

1 k Fast mode plus

SDA and SCL line pull up at 1.8 V

R10

R3 0R

100 nF Supply decoupling capacitor

2.2k SDA and SCL line pull up at 3.3 V

U3 TCA9406YZPR TI Voltage level translator 2 BIT

1.8V regulator application

2.2 uF Output voltage decoupling

R12 15 k

R13 0 R

R14 12 k

U4 LD39050PUR ST Current regulator

Current/Power monitor

R15 56 R

C10 100 nF Supply decoupling capacitor

U5 INA226 TI Current monitor regulator high/low-

side

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List of materials

UM2858 - Rev 1 page 8/14

3.4 Solderdrop configurations

Solderdrops allow the following configurations of the X-NUCLEO-6283A1 expansion board (see the figure below):

• the VD6283 interrupt is output on the TP2/GPIO1 (SB7 fitted) of the expansion board. By default, the SB7 is

fitted.

• the VD6283 analog flicker is output on the TP1/GPIO2 (SB3 fitted) of the expansion board. By default, the

SB3 is fitted.

• the VD6283 I2C Fast mode can be enabled by fitting SB16 and SB17 solder drops. By default SB16 and

SB17 are not fitted.

Figure 5. Interrupt configuration

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Solderdrop configurations

UM2858 - Rev 1 page 9/14

3.5 Integrated device pin location

The following image illustrates the device pin location. U1 is the bottom view, while U2, U3, U4 and U5 represent

the top views.

Figure 6. Integrated device pinning

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Integrated device pin location

UM2858 - Rev 1 page 10/14

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