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
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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
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Document references
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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
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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
1
NC
NC
Not used2 IOREF
3 RESET
Power 4 3V3 3V3 3.3 V supply
5 NC 5V Not used
GND
6
GND GND Ground
7
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
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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
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3.2 Electrical schematic
Figure 4. X-NUCLEO-6283A1 expansion board schematic
rorottaallugugeeRR 88VV11
CN6
CN5
CN8 CN9
A0
A1
A2
A3
A4
A5 D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
GND
D14
AVDD
D15
NC
IOREF
RESET
VIN
+3.3V
+5V
GND
SCL
SDA
GND
B4
OE
A0
SCL
VS+
VOUT
PG
GND
THERMAL
SCL_B
SCLA_A
VCCB
GND
D2
D1
C2
OE
SDA_A
B2
A1
B1
A2
C1
SDA_B
VCCA
6
3
15
7
4
2
ADJ
VIN
EN
A1
C2
B2
D2
9
10
4
6
1
2
8
3
B1
C1
D1
A3
B3
C3
D3
A1
A2
A3
A4
B1
B2
B3
5
7
GND
VIN-
VIN+
SDA
A1
A2
A3
B1
B3
B2
GPIO2
GPIO1
SCLVSS
SDA
VDD
1V8_DUT
A1
VBUS
Alert
3V3_NUCLEO 3V3_NUCLEO
3V3_NUCLEO
3V3_NUCLEO 3V3_NUCLEO
1V8 3V3_NUCLEO
1V8|
1V8 1V8
1V8
1V8
1V8
A2
3V3_NUCLEO
1V8|
1V8_DUT|
1V8|
1V8_DUT
3V3_NUCLEO 1V8
1V8
3V3_NUCLEO
GND R4
C6C5
R6
R5
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
C9
R12
R14
R13
C8
SB3 R1
C1
TP2
R2
SB5
SB10
SB7
TP1
TP3
1V8
C2 C3
GND
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Electrical schematic
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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
R7
2.2 uF Standard and fast mode
SDA and SCL line pull up at 1.8 V
R8
R9
1 k Fast mode plus
SDA and SCL line pull up at 1.8 V
R10
R3 0R
C4
100 nF Supply decoupling capacitor
C7
R5
2.2k SDA and SCL line pull up at 3.3 V
R6
U3 TCA9406YZPR TI Voltage level translator 2 BIT
1.8V regulator application
C8
2.2 uF Output voltage decoupling
C9
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
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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
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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
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