
NXP Semiconductors
UM11079
IoT Module base board
UM11079_OM40006.docm
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2017, 2018. All rights reserved.
User manual
Rev. 1.0
— March 20, 2018
19 of 23
8.5 Digital Microphone
A low power Knowles SPH0641LM4H digital microphone is incorporated on the board,
for use with Modules that support direct interfacing to this type of PDM microphone. 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.
8.6 USER button
User Button (SW5) can be used to generate an interrupt by pulling down the P6 pin 41
(PIO1-1) of the Module to ground.
A 100KΩ pull-up resistor is also connected to this pin.
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from
Downloaded from