6x8 MATRIX LED DRIVER
Integrated Silicon Solution, Inc. – www.issi.com
2
Rev. C, 03/22/2017
SOFTWARE CONTROL
The evaluation board comes with an Arduino
compatible microcontroller circuit preloaded with
IS32FL3738 demonstration firmware, called a sketch.
This allows the functionality of the IS32FL3738 to be
verified before starting firmware development.
The Arduino hardware consists of an Atmel
microcontroller with a bootloader allowing quick
firmware updates. First download the latest Arduino
Integrated Development Environment IDE (1.6.12 or
greater) from
www.arduino.cc/en/Main/Software
.
Then download the latest IS32FL3738 firmware
(sketch) from the ISSI website
www.issi.com/US/product-analog-automotive.shtml
.
When using the Arduino environment, please select
Genuino UNO as shown below, then select the serial
port. Follow the standard procedure to upload the
latest IS32FL3738 firmware into the Arduino; then
use the IDE to modify it. There is no additional
software required to run the eval board.
EXT-SOFTWARE CONTROL
The IS32FL3738 can also be driven by an external IIC
source.
Follow the steps below to configure the eval board for
external control.
1) Open the two pins of J7 on the right side, to
disable the onboard Arduino and enable external
control (the SDA SCL and SDB become high
impedance).
2) Default VIO is 5V, if you use a 3.3V IO, connect
3.3V to VIO pin in J7.
3) Connect SDB to VIO or high level IO
4) Connect external IIC to the IIC pins of J7
5) Start external IIC control.
Please refer to the datasheet to get more information about
IS32FL3738
