NXP Semiconductors
UM10817
OM13503, PCA8539 demo board
UM10817
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2014. All rights reserved.
User manual
Rev. 1 — 3 September 2014
3 of 13
1. Introduction
This user manual describes the OM13503 demo board. The board consists of a base
board, with a plugged in LPCXpresso board containing the microcontroller to control the
display driver. The PCA8539 is a peripheral LCD driver which generates the drive signals
for a dot matrix display of up to 18 rows and up to 100 columns. The PCA8539 was
specifically designed for high-contrast Vertical Alignment (VA) LCDs. To generate the
high V
LCD
voltage it features an internal charge pump with integrated temperature
compensation, and it communicates either via a two-line bidirectional I²C-bus or a four-
line bidirectional SPI-bus.
This board was developed in order to provide a low cost tool to engineers, wishing to
demonstrate and evaluate this LCD driver, and to get hands-on experience with writing
code for it. Code written using this board can serve as an example for the final
application. This enables rapid prototyping.
Features:
•
Demonstrates PCA8539 LCD driver
•
Features a vertical alignment (VA) COG display module with integrated backlight
•
Plugged in OM13035 LPCXpresso board with LPC1115 microcontroller
•
3 push buttons
•
User modifiable firmware, In-System/In-Application Programming (ISP/IAP) via USB
•
Power supply can be done either via USB or an external power supply. This can also
be used for an external V
LCD
•
Box contents:
−
OM13503 base board (marked on the board)
−
OM13035 LPCXpresso board
The 12NC of the OM13503 board is 9353 031 21598.
