IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER

IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
IS31FL3732 IC DESCRIPTION
RECOMMENDED EQUIPMENT
The IS31FL3732 is a compact LED driver for 144 single
LEDs. The device can be programmed via an I2C
compatible interface. Additionally each of the 144 LEDs
can be dimmed individually with 8-bit allowing 256
steps of linear dimming.
To reduce CPU usage up to 8 frames can be stored
with individual time delays between frames to play
small animations automatically. LED frames can be
modulated with audio signal.
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
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ABSOLUTE MAXIMUM RATINGS

≤ 5.5V power supply
Caution: Do not exceed the conditions listed above, otherwise
the board will be damaged.
IS31FL3732 IC FEATURES
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5.0V, 2A power supply
(Board supply voltage should be 4.5V~5.5V)
Audio source, 3.5mm input jack
(i.e. MP3 player, Notebook PC, etc)
8Ω speaker (on board or external)
Supply voltage range from 2.7V to 5.5V
8 frames memory for animations
Picture mode and animation mode
Auto intensity breathing during the switching of
different frames
LED frames displayed can be modulated with
audio signal intensity
LED light intensity can be modulated with audio
signal intensity
QFN-40 (5mm × 5mm) package
QUICK START
PROCEDURE
The IS31FL3732 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)
2)
3)
Connect an 8Ω speaker to the “SPK” connector.
(If an on board speaker is not provided).
Connect the audio source to the “AUDIO IN”
connector.
Connect the DC power to the connector (DC IN)
or connect the power input to micro-USB jack
(CON4). It is recommended to use a 5V/2A USB
power source if you use the audio amplifier on the
board.
Caution: Only one supply can be on at one time otherwise
risk damage to power supply.
4)
5)
6)
Turn on/connect to the power supply.
Turn on the audio signal.
Adjust the audio source volume level for optimum
evaluation board performance in equalizer mode
7.
Figure 1: Photo of IS31FL3732 Evaluation Board
ORDERING INFORMATION
Part No.
Temperature Range
Package
IS31FL3732-QFLS2-EB
-40°C to +85°C (Industrial)
QFN-40, Lead-free
Table 1: Ordering Information
For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at
[email protected] or (408) 969-6600.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
1
IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
EVALUATION BOARD OPERATION
The
IS31FL3732
evaluation
board
comes
preprogrammed with eight animation display
sequences. Press the MODE button (K1) to cycle
between the following animation sequences:
Firework animation
Lighting animation
Power-on animation
Water drop animation
Static graphics breathe dimming effect
Triangular music bar effect: more triangular music
bars are displayed with stronger music.
7) Equalizer bar effect: EQ bars move up and down
with music.
8) Multiple graphics display: different graphics
change with music rhythm.
1)
2)
3)
4)
5)
6)
threshold based on the voltage on the VIO pin. An
external VIO voltage in the range of 1.8V≤VIO≤VCC can
be applied after removing (open) the JP2 jumper.
The board comes with JP2 default setting closed
(short). If it is set to open, the user can connect an
external VIO voltage supply to TP3, the external VIO
voltage is recommended to equal to ex-IIC’s high logic.
Caution: If JP2 is closed (shorted), user can’t connect the
user’s MCU VCC to VIO directly, otherwise the user’s MCU
(maybe 3.3V) will connect to evaluation bard’s VCC (4.5V~5V)
and maybe damaged.
Jumper
Setting
Switch
SOFTWARE CONTROL
JP1 default setting is closed (short). If it is set to open,
the on-board MCU will set its I2C pins to High
Impedance (open-drain). With JP1 open, the
evaluation board can be driven by external I2C signals
connected to TP3 to control the IS31FL3732 LED
driver.
The IS31FL3732 can set its I2C bus interface logic
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
Open
The I2C interface is set to a high
impedance state for external I2C
control via TP3.
Short
The on board MCU controls the
IS31FL3732.
Open
External DC voltage in range of
1.8V≤VIO≤VCC provides I2C logic
threshold.
Short
The VIO=VCC.
JP1
Note: IS31FL3732 solely controls the FxLED function on the
evaluation board.
JP2
(Note)
Operation
Table 2: Jumper Table
Note: The VIO voltage should be in the range of
1.8V≤VIO≤VCC. The VIO value should equal the micro’s VOH value.
For example, if micro VOH=1.8V, then the IS31FL3732 VIO should
be set to 1.8V.
2
IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
CA1
CB1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
D1
D16
CA2
CB2
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
D32
D17
CA3
CB3
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
D48
D33
CA4
CB4
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
D64
D49
CA5
CB5
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
D80
D65
CA6
CB6
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
D96
D81
CA7
CB7
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
D112
D97
CA8
CB8
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
D128
D113
CA9
CB9
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
D129
D144
VCC
R1
100K K1
U2
VCC
1
2
3
4
5
6
7
8
9
10
11
C1
1uF
RXD
R2
10K
TXD
INTB
JP1
44
43
42
41
40
39
38
37
36
35
34
P1.4
P1.2
P1.1
P1.0
RST
RXD
TXD
INT0
INT1
VDD
VCC
MODE
SDA
SCL
SDB
VCC
C2
1uF
C4
1uF
C6
1uF
C3
0.1uf
U1
1
20
CA1
CA2
CA3
CA4
CA5
CA6
CA7
CA8
CA9
C5
0.1uf
4
C7
1uF
PVCC
PVCC
VCC
C8
0.1uf
OPEN=EXT CTRL
STC12C5A60S2
26
C10
1uF
C9
14
12
13
16
17
15
18
19
20
21
22
33p
Y1
C12
12MHZ
33p
33
32
31
30
29
28
27
26
25
24
23
XTAL2
GND
XTAL1
TP3
TP1
CON1
DC IN
VIO
SDB
SCL
SDA
INTB
SYNC
GND
VCC
C15
1uF
TP2
CON2
AUDIO IN
VCC
TXD
RXD
GND
GND
5
4
3
2
1
C16
4
IN-
VO1
VCC
6
1
C17
1uF
JP2
VIO
VCC
R7
100K
1
2
7
C14 6
0.22uF
5
21
22
25
SYNC
30
7
8
9
31
VO2
VDD
SD
IN+
BYPASS
GND
VIO
R_EXT
C_FILT
IN
ADDR2
ADDR1
INTB
SDA
SCL
SDB
CB1
CB2
CB3
CB4
CB5
CB6
CB7
CB8
CB9
SYNC
GND
GND
GND
GND
CA1
CA2
CA3
CA4
CA5
CA6
CA7
CA8
CA9
2
3
10
28
29
C13
24
0.1uF
23
11
12
13
14
15
16
17
18
19
R6
20K
CB1
CB2
CB3
CB4
CB5
CB6
CB7
CB8
CB9
IS31FL3732
U3
R9
20K
0.22uF
Audio In
ISP
R8
39K
Audio In
C19 VIO 27
0.1uF
INTB
SDA
SCL
SDB
TP4
1
2
3
4
5
6
7
C11
0.1uf
VIO
R3
R4
R5
4.7K 4.7K 4.7K
NC
NC
NC
AVCC
32
33
34
35
36
37
38
39
40
R11
NC / 0R
5
ex-Speaker
CON3
SPK
CON4
8
3
R10
0R / NC
2
VCC
V+
GND
1
2
3
4
5
USB
C18
1uF
on board Speaker
IS31AP4991
Figure 2: IS31FL3732 Application Schematic
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
3
IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
BILL OF MATERIALS
Name
Symbol
LED Driver
U1
MCU
Description
Qty
Supplier
Part No.
Matrix LED Driver
1
ISSI
IS31FL3732
U2
Microcontroller
1
STC
STC12C5A60S2
Audio Amplifier
U3
Class- AB Audio Amplifier
1
ISSI
IS31AP4991
Diode
D1~D144
Diode, LED Blue, SMD
144
Everlight
9-217/BHC-ZL1M2RY/3T
Crystal
Y1
Crystal,12MHz,HC-49S
1
Resistor
R6,R9
RES,20k,1/16W,±5%,SMD
2
Yageo
RC0603JR-0720KL
Resistor
R10,R11
RES,0R,1/16W,±5%,SMD
or NC
2
Yageo
RC0603JR-00000L
Resistor
R3,R4,R5
RES,4.7k,1/16W,±5%,SMD
3
Yageo
RC0603JR-074K7L
Resistor
R1,R7
RES,100k,1/16W,±5%,SMD
2
Yageo
RC0603JR-07100KL
Resistor
R2
RES,10k,1/16W,±5%,SMD
1
Yageo
RC0603JR-0710KL
Resistor
R8
RES,39k,1/16W,±5%,SMD
1
Yageo
RC0603JR-0739KL
Capacitor
C1,C2,C4,C6,
C7,C10,C15,
C17,C18
CAP,1µF,16V,±20%,SMD
9
Yageo
CC0603KKX7R9BB105
Capacitor
C9,C12
CAP,33pF,16V, ±20%,SMD
2
Yageo
CC0603KKX7R9BB330
Capacitor
C3,C5,C8,
C11,C13,C19
CAP,0.1µF,16V,±20%,SMD
6
Yageo
CC0603KKX7R9BB104
Capacitor
C14,C16
CAP,0.22µF,16V,±20%,
SMD
2
Yageo
CC0603KKX7R9BB224
8Ω speaker, if provided,
R10=0Ω and R11=Null, if
not provided, R10=Null and
R11=0Ω
1
Button SMD
1
Onboard
Speaker
(If provided)
SPK1
Button
K1
Jumper
JP1,JP2
Power
Connecter
CON1
Evaluation board VCC
supply
1
Audio
Connector
CON2
3.5mm Audio Input
1
RCA Connector
CON3
Ext-speaker
1
USB
CON4
Evaluation board VCC
supply
1
2
Bill of Materials, refer to Figure 2 above.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
4
IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
Figure 3: Board Component Placement Guide - Top Layer
Figure 4: Board PCB Layout - Top Layer
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
5
IS31FL3732 AUDIO MODULATED MATRIX LED DRIVER
Figure 5: Board Component Placement Guide - Bottom Layer
Figure 6: Board PCB Layout - Bottom Layer
Copyright © 2015 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc. is adequately protected under the circumstances Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 06/03/2015
6