NXP Semiconductors
UM11079
IoT Module base board
UM11079_OM40006.docm
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© NXP B.V. 2017, 2018. All rights reserved.
User manual
Rev. 1.0
— March 20, 2018
17 of 23
Function Connector
Shared with
GPIO
J9 pin 8
User LED 2
GPIO
J11 pin 1
User LED 3
GPIO
J11 pin 3
User LED 1
GPIO
J12 pin 4
PMod Connector
GPIO
J12 pin 5
Accelerometer interrupt
GPIO
J12 pin 6
User push button
6.6 Ethernet port
The OM40006 board includes an on-board LAN8720A-CP PHY and RJ45 jack with
integrated link status LEDs. The MCUXpresso SDK package for each NXP Module
includes drivers for use of this Ethernet PHY.
7. On-board memory
7.1 SDRAM
The board includes an 128Mb Winbond W9812G6JB-6 SDRAM, connected to the 16-bit
external memory interface available from the Module connectors J4 and J5. The
MCUXpresso SDK package for each NXP Module includes drivers that have optimized
external memory settings for use of this memory.
8. Other board features
This section describes board functions not mentioned elsewhere in this document.
8.1 LCD with capacitive touch
The OM40006 includes a Rocktech RK043FN02H-CT color LCD display panel with a
resolution of 272x480 pixels and a capacitive touch controller. The LCD and capacitive
touch controller interface to the main board via flex cables routed beneath the LCD
panel. The LCD panel is secured using multiple adhesive pads. It is not recommended
that the panel be removed as these adhesive pads will need to be replaced afterwards to
ensure the mechanical integrity of the flex cable connections.
On-board voltage pump circuitry is provided to drive the LCD backlight using an
AP5724WG device. This is enabled using PIO3-31 (pin 28 of Module connector P6).
The MCUXpresso SDK for any NXP supplied Module includes drivers and example
applications for the LCD and capacitive touch controller (for Modules that include an LCD
controller interface.)
8.2 Audio codec
The OM40006 board incorporates a Cirrus Logic (Wolfson) WM8904 audio codec,
powered via a dedicated regulator. This codec has both I
2
C (for control) and I
2
S (for data)
interfaces.
The I
2
C interface of the codec is routed to Module connector P5 pins 75 & 77, and is
shared with the other I
2
C devices on the board; the Codec has an address of 0b0011010.
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