6x8 MATRIX LED DRIVER
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. C, 03/22/2017
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
Ⅰ
)
RECOMMENDED EQUIPMENT
5.0V, 2A Micro USB
Arduino
IDE,
www.arduino.cc/en/Main/Software
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.
ORDERING INFORMATION
Part No.
Temperature Range
Package
IS32FL3738-ZLA3-EB
-40°C to +125°C (Automotive)
eTSSOP-28, Lead-free
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
or (408) 969-6600.
