NXP Semiconductors PCAL6408A-ARD, User Manual, Page: 15 / 25

NXP Semiconductors
UM11704
PCAL6416AEV-ARD evaluation board
The following steps describe how to assemble, program, and operate the configuration
shown in Figure 6 .
1. Insert the PCAL6416AEV-ARD daughter card to P16 – P19 connectors located on
LPCXpresso55S69 development board (see the marked pins of P16 – P19, Figure 6 )
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 Section 7
Figure 7 shows the two boards in operation.
Figure 7. PCAL6416AEV-ARD daughter board / LPCXpresso55S69 mother board operation
6.3 Using the PCAL6416AEV-ARD with an i.MX 8M Mini LPDDR4 EVK
board
When an i.MX 8M Mini LPDDR4 EVK board is used with the PCAL6416AEV-ARD
board, a third board (IMX8MMINI-IARD interposer board) must be used, especially
designed and built as EVK – daughter board 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
UM11704 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved.
User manual Rev. 1.0 — 1 December 2021
15 / 25