NXP Semiconductors

UM11597

PCF2131-ARD evaluation board

Arduino 3.3 V

J14.1&2

Adjustable VDD

J14.2&3

Purposes

Yes

When using a microcontroller with Arduino header, and VDD is fixed to

3.3V

Yes

When using an Aardvark/FTDI_C232HM platform as host interface

controller. VDD = 3.3V

Yes

When using an Promira platform as host interface controller. VDD can be

adjusted to 1.2V, 1.8V, 2.5V, 3.3V, and 5V to match with Promira’s level

shift command.

Table 4. Power supply selection

5 Installing and configuring software tools

PCF2131-ARD evaluation board is designed and built as a daughterboard able to work

in conjunction with a motherboard equipped with an Arduino port. The board is fully

compatible with the following NXP Evaluation (EVK) boards:

• IMXRT1050 EVK Board

• LPCXpresso55S69 Development Board

• i.MX 8M Mini LPDDR4 EVK Board

Each of the evaluation/development boards benefits from firmware support which can

be downloaded from www.nxp.com. Before starting, the EVK motherboard must be

programmed with the corresponding firmware package. Additionally, a GUI application

(Windows 10) is also available for download, allowing rapid testing and operation of the

PCF2131-ARD daughterboard through the one of above mentioned EVKs.

For details regarding installation of the EVK firmware and GUI host software on PC,

download the EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf

instruction file from www.nxp.com. Once the software is installed, the first step is to select

from the graphical interface the correct combination EVK – PCF2131-ARD daughtercard,

and then the board can be controlled from the GUI interface. See Section 6 and

Section 7 for more details regarding the operation of PCF2131-ARD from GUI software.

6 Configuring the hardware

6.1 PCF2131-ARD initial hardware setup

The following steps are suggested to setup the hardware before first use:

1. Select the communication bus

a. Select the I2C-bus Arduino source (J3)

b. Select interface jumpers, either using I2C interface (J1) or SPI interface (J2)

2. Place coin battery CR2032 into BT1 battery socket

3. Remove jumper on J9.1&2, and move it to J9.3&4

4. Select correct power supply source on J14. (1&2) = Arduino, (2&3) = Micro USB

UM11597

All information provided in this document is subject to legal disclaimers.

© NXP B.V. 2021. All rights reserved.

User manual

Rev. 1.0 — 15 September 2021

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