NXP Semiconductors

UM11597

PCF2131-ARD evaluation board

Figure 13. PCF2131-ARD daughterboard / i.MX 8M Mini LPDDR4 EVK board operation

6.1.4 Using PCF2131-ARD with another Arduino device

The PCF2131-ARD daughterboard can be operated with a different EVK board, which

has an Arduino port. There are two options to connect the board: using an EVK equipped

with an Arduino port, and an EVK without an Arduino port. In the first case, a firmware

shall be developed according with PCF2131TF specifications, and then simply attach

PCF2131-ARD daughterboard to the EVK, to operate the board. In the second case,

using the pin chart of Arduino connectors (Table 1), make the necessary electrical

connections (for power, I2C-bus or SPI-bus and interrupt control lines), and develop the

desired firmware, assuring that is compliant with IC specifications. Use PCF2131TF

datasheet to read details about internal registers of PCF2131TF and data exchange

between internal controller and the EVK. Ensure the electrical connections are correct

and avoid data conflicts on the signal lines to prevent IC damage.

6.1.5 Using PCF2131-ARD with Aardvark I2C/SPI Host Adapter

The PCF2131-ARD evaluation board can be controlled with the Aardvark I2C/SPI host

adapter from Total Phase. The daughterboard contains the dedicated Aardvark connector

(J4), so the host adapter can be directly connected to the daughterboard through J4

header, as shown in Figure 14. The pin chart of J4 is detailed in Table 3. The Aardvark

I2C/SPI host adapter, along with the software tools (dynamic linked library, control

center API) from Total Phase represents a powerful tool to test and develop devices and

systems which use I2C and SPI standard protocols.

Note: The user must provide power through the USB connector (J5), or Arduino interface

(J11), before operating the daughterboard with the Aardvark host adapter. In Figure 14

the power is provided through the USB connector.

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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