NXP Semiconductors
UM11009
PCA9745B demonstration board OM13524
UM11009
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© NXP Semiconductors N.V. 2016. All rights reserved.
User manual
Rev. 1 — 23 June 2016
13 of 28
8. PCA9745B evaluation steps with WIN-I2CUSB board
The PCA9745B is controlled by WIN-SPIUSB GUI in Expert mode as shown in
Fig 6
.
Fig 6.
Drop-down menu selection for SPI expert mode
Connect the hardware as described in
Section 4.3
. All jumpers are in default setting for
PCA9745B demo board. When you have correctly installed the software and the
demonstration board hardware is connected and recognized by the computer, start the
Win-SPIUSB software. As shown in the
Fig 6
, when the demonstration board hardware is
correctly connected to the USB port and the computer recognizes it, the message
“Hardware Detected” is displayed on the bottom of the window.
Switched 3.3 V and 5.0 V output power supplies are controlled through the “Options”
menu or by double clicking on the 3.3 V or 5.0 V symbols on the bottom of the window.
Power supplies are disabled by default and you must enable them before using the SPI-
bus device on the board. SPI Frequency and Mode are controlled through the “Options”
menu or by double clicking on the frequency or mode symbol on the bottom of the
window.
8.1 PCA9745B blinking demo for all White and RGB LEDs
1. From the ‘Device’ drop-down menus select ‘Universal Modes’, and from the
subsequent drop-down menu select ‘Expert Mode’ as shown in
Fig 6
.
2. Copy the “PCA9745B WHT_RGB LEDs blinking demo” text file as shown below.
From the ‘File’ drop-down menus select ‘Open’, and from the “open data file” window
to select this text file.
