NXP Semiconductors PCF2131-ARD, User Manual, Page: 7 / 31

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, I
2
C)
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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