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PDF IS31FL3728 Data sheet ( Hoja de datos )
| Número de pieza | IS31FL3728 | |
| Descripción | AUDIO MODULATED MATRIX LED DRIVER | |
| Fabricantes | ISSI | |
| Logotipo |  |
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IS31FL3728
AUDIO MODULATED MATRIX LED DRIVER
GENERAL DESCRIPTION
FEATURES
December 2011
IS31FL3728 is a general purpose 8×8 LED matrix
driver which features an audio frequency equalizer
(EQ) mode or a general LED dot matrix display mode.
The general LED matrix display defaults to an 8×8
configuration, however, it can be configured for a 5×11,
6×10, 7×9 dot matrix display. The matrix picture
brightness can be modulated by audio. In either the
audio EQ mode or matrix display mode, the array is
internally scanned, and requires only one-time
programming, thus eliminating the need for real time
system resource utilization.
It programs the LED array through I2C interface. In
the general purpose display mode, each dot of the
LED array is independently programmed on or off over
time. In the audio EQ mode, the X axis (column)
represents the frequency bands while the Y axis (row)
represents the strength of the input audio signal in
each band. The number of LEDs lit in a column is
proportional to the strength of the audio signal in the
corresponding band in a thermometer-coded manner.
IS31FL3728 is available in 24-pin QFN (4mm × 4mm).
It operates from 2.7V to 5.5V over the temperature
range of -40°C to +85°C.
5~8 current source outputs for row control
8~11 outputs for column scan control
Programmable 8×8, 7×9, 6×10, 5×11 matrix
One-time programming, internal scan
Full scale LED current controlled by internal
register setting or audio signal
Audio frequency EQ display with programmable
input gain
LED matrix brightness can be modulated with
audio Signal
One address pin with 4 logic levels to allow four
I2C slave addresses
I2C interface
2.7V to 5.5V supply
Over-temperature protection
QFN-24 (4mm × 4mm) package
APPLICATIONS
Mobile phones and other hand-held devices for
LED displays.
Audio frequency equalizer display
TYPICAL APPLICATION CIRCUIT
http://www.DataSheet4U.net/
Figure 1 Typical Application Circuit
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
IS31FL3728
DIGITAL INPUT SWITCHING CHARACTERISTICS (Note 3)
Symbol
Parameter
Condition Min.
Typ.
fSCL Serial-Clock Frequency
tBUF
Bus Free Time Between a STOP and a
START Condition
1.3
tHD, STA
tSU, STA
tSU, STO
tHD, DAT
tSU, DAT
tLOW
tHIGH
tR
Hold Time (Repeated) START Condition
Repeated START Condition Setup Time
STOP Condition Setup Time
Data Hold Time
Data Setup Time
SCL Clock Low Period
SCL Clock High Period
Rise Time of Both SDA and SCL
Signals, Receiving
(Note 4)
0.6
0.6
0.6
100
1.3
0.7
20 + 0.1Cb
tF
Fall Time of Both SDA and SCL Signals,
Receiving
(Note 4)
20 + 0.1Cb
Note 1: Current of Single LED in Rx(x=1~8) is IOUT/8.
Note 2: All Row Drivers are ON.
Note 3: Guaranteed by design.
Note 4: Cb = total capacitance of one bus line in pF. ISINK ≤ 6mA. tR and tF measured between 0.3 × VCC and 0.7 × VCC.
Max.
400
0.9
300
300
Unit
kHz
μs
μs
μs
μs
μs
ns
μs
μs
ns
ns
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IS31FL3728
TAPE AND REEL INFORMATION
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/19/2011
11
datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet IS31FL3728.PDF ] | |
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