NXP Semiconductors
UM11192
User Manual for LPCXpresso54S018M Development Board
UM11192
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2019. All rights reserved.
User manual
Rev. 1.0
— 13th February 2019
28 of 34
10.4 Accelerometer
The board includes an NXP MMA8652FCR1 accelerometer, interfaced to Flexcomm 2
(ports PIO3-23/PIO3-24) of the LPC54S018J4M. The accelerometer has an I
2
C address
of 0b0011101.
10.5 Digital Microphone
The LPC54S018J4M device incorporates dual digital microphone interfaces. A low power
Knowles SPH0641LM4H digital microphone is incorporated on the board, interfaced to
the PDM1 microphone interface. Note that the Knowles digital microphone is designed to
be mounted on the underside of a board, with audio passing through a hole in the board.
Note that the PDM0 interface of the LPC54S018J4M is also available for interfacing to an
external microphone via the Expansion connectors, but due to signal sharing with this
function and LCD data lines 14 and 15, solder jumpers JS33 and JS36 need to be moved
to the 2-3 position to enable this function (thus disabling correct LCD operation).
The MCUXpresso SDK includes drivers and demonstration code for capturing data from
the on-board digital microphone and an external microphone of the same type (the latter
requires board modification).
10.6 USER button
This button can be used to generate an interrupt by pulling down the PIO1-1 of the
LPC54S018J4M to ground.
11. Dual CAN transceiver Shield (OM13099)
The OM13099 shield board is a dual CAN/CAN-FD transceiver, available as a
standalone item from NXP and distributors, which has been designed to work with
LPC54xxx series evaluation boards. This board features the NXP TJA1059 dual
transceiver, plus an RS232C transceiver. This section provides a brief overview of the
board and how to use it with the LPC54S018M-EVK.
11.1 Board layout and jumpers
Fig 9 shows the
Shield board layout. The diagram highlights the connections used by the
Shield board on the expansion connectors, and the location of the jumpers.