NXP Semiconductors
UM11711
PCAL6524EV-ARD evaluation board
1. Insert the PCAL6524EV-ARD daughter card to P16 – P19 connectors located
on LPCXpresso55S69 development board (see the marked pins of P16 – P19,
2. Connect the development board using port P6 USB port of PC;
3. Install the LPCXpresso55S69 target firmware (download from NXP site and read the
EVK_Firmware_And_GUI_Install_Guide_For_Arduino_Boards.pdf
instruction file);
4. Install GUI application on PC (see the instruction file called out in the previous step);
5. Open the GUI application to operate the device from the PC. For details regarding
GUI operation see
.
shows the two boards in operation.
Figure 8. PCAL6524EV-ARD daughterboard/LPCXpresso55S69 motherboard operation
6.3 Using the PCAL6524EV-ARD with an i.MX 8M Mini LPDDR4 EVK
board
When an i.MX 8M Mini LPDDR4 EVK board is used with the PCAL6524EV-ARD board, a
third board (IMX8MMINI-IARD interposer board) must be used, especially designed and
built as EVK – daughterboard interconnection. The EVK board i.MX 8M Mini LPDDR4
is not equipped with an Arduino port; instead it has a 2 x 20 pin expansion connector
(J1003, see i.MX 8M Mini LPDDR4 EVK user manual). J1003 is a multipurpose port,
containing various digital I/O lines, including specialized I
2
C and SPI buses. Starting from
the expansion connector pin chart, an Arduino port interposer board was developed,
with the role of signal-to-signal bridge between the 2 x 20 connector pins on the i.MX
8M Mini LPDDR4 EVK and the mated connectors of the Arduino port present on the
PCAL6524EV-ARD daughterboard.
UM11711
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© NXP B.V. 2022. All rights reserved.
User manual
Rev. 1.0 — 19 January 2022
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