ISSI IS31FL3216A, Manual

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16 CHANNELS LED DRIVER EVALUATION BOARD GUIDE
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. A, 09/18/2017
DESCRIPTION
The IS31FL3216A is a fun light LED controller with an
audio modulation mode. It can store data of 8 frames
with internal RAM to play small animations
automatically.
IS31FL3216A can sample the input signal to modulate
the intensity of LEDs, or control 8 frames playing by
internal ADC block.
The LED current of each channel can be set in 256
steps by adjusting the PWM duty cycle through an I2C
interface. 8 channels can be used as GPIO ports.
FEATURES

2.7V to 5.5V supply

I2C interface, automatic address increment
function

Internal RAM

Modulate LED brightness with 256 steps PWM

PWM frequency up to 26kHz

Each channel can be controlled independently

Auto Frame Play Mode with 8 frames

8 frames memory for animations

Audio Frame Mode with 8 frames

8 of 16 outputs not used as LED drivers can be
used as GPIO ports

8 levels of maximum intensity control

QFN-28 (4mm × 4mm) package
QUICK START
Figure 1: Photo of IS31FL3216A Evaluation Board
RECOMMENDED EQUIPMENT

5.0V, 2A power supply

Audio source( i.e. MP3 player, Notebook PC, etc)

8 Ω speaker
ABSOLUTE MAXIMUM RATINGS

≤ 5.5V power supply

≥ 8 Ω speaker
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
PROCEDURE
The IS31FL3216A evaluation board is fully assembled
and tested. Follow the steps listed below to verify
board operation.
Caution: Do not turn on the power supply until all connections
are completed.
1) If using external DC power supply connect the
ground terminal of the power supply to the
evaluation board's GND pin and the positive
terminal to the VCC pin. The evaluation board can
also be powered via the Micro USB connector.
2) Connect an 8 Ω speaker to the “SPK” connector.
3) Connect the audio source to the “AUDIO IN”
connector.
4) Short J1 to close external control.
5) Turn on the power supply/Plug in the Micro USB
and pay attention to the supply current. If the
current exceeds 1A, please check for circuit fault.
6) Turn on the audio signal.
7) Enter the desired mode of display by toggling the
MODE button (K1).
ORDERING INFORMATION
Part No. Temperature Range Package
IS31FL3216A-QFLS3-EB -40°C to +105°C (Industrial) QFN-28, Lead-free
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
analog@issi.com or (408) 969-6600.