Chapter 8
Expansion connectors
The MIMXRT685-EVK includes two expansion connector sets, incorporating support for Arduino and PMod standards. Pin out
diagrams are provided in Figure 5 and Figure 6.
For further details, refer to the board schematics.
8.1 PMod connector
Connector J36 is an optional connector which can provide access for a remote host to the SPI and I
2
C ports for the RT6xx that
support ISP mode.
Table 12. PMod connections
PMOD pin Circuit reference Port
Pin 1 P1_14_SPI_SS0_A P1_14
Pin 2 BRIDGE_INTR_ISP P1_16 (JP13)
Pin 3 P1_13_SPI_MOSI_A P1_13
Pin 4 P0_3 P0_3
Pin 5 P1_12_SPI_MISO_A P1_12
Pin 6 P0_15_FC2_SCL P0_15
Pin 7 P1_11_SPI_CLK_A P1_11
Pin 8 P0_16_FC2_SDA P0_16
Pins 9, 10 GND N/A
Pins 11, 12 VDD_PMOD VDDIO1 (JS9)
8.2 Arduino connector
The connectors J27-J30 provide Arduino compatibility and access to several other signals for use in prototyping. Some ports
used on these connectors are shared with other devices/connectors on the board. Refer to the schematic for further information.
NXP Semiconductors
i.MX RT685 Evaluation Board, Rev. 0, March 20 2020
User's Guide 27 / 31
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