NXP Semiconductors

UM11597

PCF2131-ARD evaluation board

line used on this connector). See Table 1 for the connector pin chart, and the lines used

in the circuit.

Ref Des

#

Arduino label

PCF2131-ARD function

1

NC

Not used

2

IOREF

Not used

3

RESET

Not used

4

3.3V

3.3 V power supply

5

5V

5 V power supply

6

GND

Power supply return

7

GND

Power supply return

J11 (Power)

8

Vin

Not used

1

A0

PCF_IFS

2

A1

Not used

3

A2

Not used

4

A3

Not used

5

A4 / SDA [1]

I2C_SDA_ARD_1

J6 (analog, digital, I2C)

6

A5 / SCL [1]

I2C_SCL_ARD_1

1

D0 / RX

Not used

2

D1 / TX

Not used

3

D2

Not used

4

D3 / PWM

Not used

5

D4

Not used

6

D5 / PWM

Not used

7

D6 / PWM

Not used

J7 (digital, UART,

PWM) – not mounted -

8

D7

Not used

1

D8

PCF_INTA

2

D9 / PWM

PCF_INTB

3

D10 / SS / PWM

SPI_CE

4

D11 / MOSI / PWM

SPI_MOSI

5

D12 / MISO

SPI_MISO

6

D13 / SCK

SPI_SCK

7

GND

Power supply return

8

AREF

Not used

9

A4 / SDA [1]

I2C_SDA_ARD_0

J12 (mixed)

10 A5 / SCL [1]

I2C_SCL_ARD_0

Table 1. Pin chart of Arduino connectors

[1]

Select the I2C_ARD_0 / I2C_ARD_1 from jumper header J3.

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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