ISSI IS32FL3738 Manual

6x8 MATRIX LED DRIVER
DESCRIPTION
The IS32FL3738 is an automotive grade general
purpose 6×8 LEDs matrix driver with 1/12 cycle rate.
The device can be programmed via an I2C compatible
interface. Each LED can be dimmed individually with
8-bit × 4 PWM data which allowing 512 steps of linear
dimming.
IS32FL3738 features 3 Auto Breathing Modes which
are noted as ABM-1, ABM-2 and ABM-3. For each Auto
Breathing Mode, there are 4 timing characters which
include current rising / holding / falling / off time and 3
loop characters which include Loop-Beginning /
Loop-Ending / Loop-Times. Every LED can be
configured to be any Auto Breathing Mode or
No-Breathing Mode individually.
FEATURES

Up to 48 LEDs (6×8) in dot matrix

Programmable 6×8 (16 RGBs) matrix size with
de-ghost function

Selectable 3 Auto Breath Modes for each dot

Auto Breath Loop Features interrupt pin inform
MCU Auto Breath Loop completed

Auto Breath offers 128 steps gamma current,
interrupt and state look up registers

256 steps Global Current Setting

Individual 512 PWM control steps

Individual Auto Breath Mode select

Individual open and short error detect function
QUICK START
Figure 1: Photo of IS32FL3738 Evaluation Board
(V01A board with 12V DC input please refer to Appendix
ORDERING INFORMATION
Part No.
IS32FL3738-ZLA3-EB
For pricing, delivery, and ordering information, please contacts ISSI's analog marketing team at
analog@issi.com or (408) 969-6600.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 03/22/2017
RECOMMENDED EQUIPMENT

5.0V, 2A Micro USB

Arduino IDE,

Arduino code download from ISSI website
ABSOLUTE MAXIMUM RATINGS

≤ 5.5V Micro USB DC power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
PROCEDURE
The IS32FL3738 evaluation board is fully assembled,
tested and comes programmed with evaluation
software. Follow the steps listed below to verify board
operation.
Caution: Do not turn on the power supply until all connections
are completed.
1) Connect the 5VDC USB power to the Micro USB.
2) Press K1 to cycle through a display mode.
EVALUATION BOARD OPERATION
The IS32FL3738 evaluation board drives16 RGB
LEDs located underneath the light dispersing filter.
Every press of the K1 switch will cycle through one of
the 8 pre-programmed lighting sequences below:
1) White LED
2) Rainbow bar
3) Red color breath
4) Green color breath
5) Blue color breath
6) Pink color breath
7) Yellow color breath
8) Cyan color breath
Note: IS32FL3738 solely controls the FxLED function on the
evaluation board.
Ⅰ
)
Temperature Range
-40°C to +125°C (Automotive)
Table 1: Ordering Information
www.arduino.cc/en/Main/Software
Package
eTSSOP-28, Lead-free
1