PANASONIC AN30259C

Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
http://www.semicon.panasonic.co.jp/en/
3-ch. LED Driver for illumination
FEATURES
DESCRIPTION
 I2C Interface (Slave address is switchable.)
AN30259A has 3-ch. LED Driver, suitable for RGB
illumination. By synchronous clock function,
simultaneous LED turn ON/OFF operation of up to 4 ICs
can be achieved.
 Built-in 3-ch. LED Driver Circuit
( Max Current Selectable [63.75 mA / 31.875 mA /
25.50 mA / 12.75 mA] )
 2.4 MHz OSC
APPLICATIONS
 12 pin Wafer level chip size package (WLCSP)
 Mobile Phone
 Smart Phone
 PCs
 Game Consoles
 Home Appliances etc.
TYPICAL APPLICATION
TOP VIEW
LED
CLK Input
A1
IREF
A2
VCC
A3
CLK
PWM
A4
LED3
B1
AD
SEL2
B2
AD
SEL1
B3
GND
B4
LED2
C1
SDA
C2
SCL
C3
VDD
C4
LED1
10 F
39 k
1 F
I2C interface
Note)
This application circuit is an example. The operation of the mass production set is not guaranteed. Customers shall perform
enough evaluation and verification on the design of mass production set. Customers shall be fully responsible for the incorporation
of the above application circuit and information in the design of the equipment.
Page 1 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Rating
Unit
Note
VCCMAX
7.0
V
*1
VDDMAX
4.6
V
*1
Topr
–30 to + 85
C
*2
Tj
– 30 to + 125
C
*2
Storage temperature
Tstg
– 55 to + 125
C
*2
Input Voltage Range
ADSEL1, ADSEL2,
SCL, SDA, CLKPWM
– 0.3 to 4.3
V
—
LED1, LED2, LED3
– 0.3 to 6.5
V
—
HBM (Human Body Model)
2.0
kV
—
Supply voltage
Operating ambience temperature
Operating junction temperature
Output Voltage Range
ESD
Note) This product may sustain permanent damage if subjected to conditions higher than the above stated absolute maximum
rating. This rating is the maximum rating and device operating at this range is not guaranteeable as it is higher than
our stated recommended operating range. When subjected under the absolute maximum rating for a long time, the
reliability of the product may be affected.
*1: VCCMAX = VCC, VDDMAX = VDD, the values under the condition not exceeding the above absolute maximum
ratings and the power dissipation.
*2: Except for operating ambient temperature, operating junction temperature and storage temperature, all ratings are
for Ta = 25C.
POWER DISSIPATION RATING
PACKAGE
12 pin Wafer Level Chip Size Package (WLCSP)
 JA
PD (Ta=25 C)
PD (Ta=85 C)
537.1 C /W
0.186 W
0.074 W
Note) For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, supply voltage, load and
ambient temperature conditions to ensure that there is enough margin follow the power and the thermal design does not
exceed the allowable value.
CAUTION
Although this IC has built-in ESD protection circuit, it may still sustain permanent damage if not handled
properly. Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the
MOS gates
Page 2 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply voltage range
Input Voltage Range
Output Voltage Range
Note)
Symbol
Min.
Typ.
Max.
Unit
Note
VCC
3.1
3.7
6.0
V
—
VDD
1.7
1.85
3.2
V
—
ADSEL1, ADSEL2,
SCL, SDA, CLKPWM
– 0.3
—
VDD + 0.3
V
*1
LED1, LED2, LED3
– 0.3
—
VCC + 0.3
V
*1
Voltage values, unless otherwise specified, are with respect to GND. GND is voltage for GND.
VDD is voltage for VDD. VCC is voltage for VCC.
*1 : ( VDD + 0.3 ) V must not be exceeded 4.6 V. ( VCC + 0.3 ) V must not be exceeded 7 V.
Page 3 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ELECTRICAL CHARACTERISTICS
VCC = 3.6 V, VDD = 1.8 V
Note)
Ta = 25 C  2 C unless otherwise specified.
Parameter
Symbol
Condition
Min
Limits
Typ
Max
Unit Note
Current consumption
Current consumption 1
OFF mode
ICC1
VDD = 0 V

0
2
A
—
Current consumption 2
OFF mode
ICC2
VDD = 1.8 V

1
5
A
—
Current consumption 3
LED lighting mode
ICC3
ILED1 to 3 = 25.50 mA setting
All LED = ON

0.6
1.0
mA
—
Off time leak current
ILEAK
Off setting
VLED1 to 3 = 6.0 V
—
—
1.0
A
—
Minimum setting current
value 1
IMIN1
IMAX[1:0] = 01,
VLED1 to 3 = 1.0 V
0.05
0.10
0.15
mA
—
Minimum setting current
value 2
IMIN2
IMAX[1:0] = 01,
VLED1 to 3 = 1.0 V
0.736
0.80
0.864
mA
—
Maximum setting current
value
IMAX
IMAX[1:0] = 01,
VLED1 to 3 = 1.0 V
23.46
25.50
27.54
mA
—
Current step
ISTEP
IMAX[1:0] = 01,
VLED1 to 3 = 1.0 V
0.00
0.10
0.18
mA
—
VSAT
IMAX[1:0] = 01,
Terminal minimum voltage of
LED1 to 3 becoming 85% of
the LED current value in 1 V.
—
0.2
0.4
V
—
12.80 mA setting,
VLED1 to 3 = 1.0 V
–5
—
5
%
—
1.92
2.40
2.88
MHz
—
LED Driver
Minimum voltage for
retainable constant current
value
Error between channels
IMATCH
Internal oscillator
Oscillation frequency
fOSC
—
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Established : 2012-09-18
Revised
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ELECTRICAL CHARACTERISTICS (continued)
VCC = 3.6 V, VDD = 1.8 V
Note)
Ta = 25 C  2 C unless otherwise specified.
Parameter
Symbol
Condition
Min
Limits
Typ
Max
Unit Note
SCL, SDA
High-level input voltage range
VIH1
Voltage which recognized that
SDA and SCL are High-level
VDD
 0.7
—
VDD
+ 0.5
V
*1
Low-level input voltage range
VIL1
Voltage which recognized that
SDA and SCL are Low-level
– 0.5
—
VDD
 0.3
V
*1
High-level input current
IIH1
VSDA ,VSCL = 1.8 V
—
0
1
A
—
Low-level input current
IIL1
VSDA ,VSCL = 0 V
—
0
1
A
—
Low-level output voltage1 (SDA)
VOL1H
ISDA = 3 mA, VDD > 2 V
0
—
0.4
V
—
Low-level output voltage2 (SDA)
VOL1L
ISDA = 3 mA, VDD < 2 V
0
—
0.2 
VDD
V
—
SCL clock frequency
fSCL
—
0
—
400
kHz
—
High-level input voltage range
VIH2
—
VDD
 0.7
—
VDD
+ 0.2
V
—
Low-level input voltage range
VIL2
—
– 0.2
—
VDD
 0.3
V
—
Pin pull down resistance value
RPD2
—
0.5
1.0
2.0
High-level output voltage
VOH2
ICLKPWM = – 2 mA
VDD
 0.8
—
VDD
+ 0.2
V
—
Low-level output voltage
VOL2
ICLKPWM = 2 mA
–0.2
—
VDD
 0.2
V
—
CLKPWM
M —
ADSEL1, ADSEL2
High-level input voltage range
VIH3
—
VDD
 0.7
—
VDD
+ 0.2
V
—
Low-level input voltage range
VIL3
—
– 0.2
—
VDD
 0.3
V
—
High-level input current
IIH3
VADSEL1, 2 = 1.8 V
—
0
1
A
—
Low-level input current
IIL3
VADSEL1, 2 = 0 V
—
0
1
A
—
Note)*1: The input threshold voltage of I2C bus (Vth) is linked to VDD (I2C bus I/O stage supply voltage).
In case the pull-up voltage is not VDD, the threshold voltage (Vth) is fixed to ((VDD / 2)  (Schmitt width) / 2 ) and High-level,
Low-level of input voltage are not specified.
In this case, pay attention to Low-level (max.) value (VILmax).
It is recommended that the pull-up voltage of I2C bus is set to the I2C bus I/O stage supply voltage (VDD).
Page 5 of 33
Established : 2012-09-18
Revised
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ELECTRICAL CHARACTERISTICS (continued)
VCC = 3.6 V, VDD = 1.8 V
Note)
Ta = 25 C  2 C unless otherwise specified.
Parameter
Symbol
Condition
External PWM operation mode
Possible input high pulse width
WPWM
—
Min
Limits
Typ
Max
—
2.5
—
Unit Note
CLKPWM
s
*2
Note) *2 : Typical design value
Page 6 of 33
Established : 2012-09-18
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ELECTRICAL CHARACTERISTICS (continued)
VCC = 3.6 V, VDD = 1.8 V
Note)
Ta = 25 C  2 C unless otherwise specified.
Parameter
Symbol
Condition
Min
Limits
Typ
Max
Unit Note
I2C bus (Internal I/O stage characteristics)
Input voltage hysteresis (1)
Vhys1
SCL, SDA hysteresis
voltage
VDD > 2 V
0.05 
VDD
—
—
V
*3
Input voltage hysteresis (2)
Vhys2
SCL, SDA hysteresis
voltage
VDD < 2 V
0.1 
VDD
—
—
V
*3
20 +
0.1Cb
—
250
ns
*3
Bus capacitance : 10 pF to
400pF
IP  6 mA (VOLmax = 0.6 V)
IP : Max. sink current
Output fall time from VIHmin to VILmax
tof
Spike pulse width kept down by
input filter
tsp
—
0
—
50
ns
*3
I/O pin capacitance
Ci
—
—
—
10
pF
*3
Notes ) *3 :These are values checked by design but not production tested.
Page 7 of 33
Established : 2012-09-18
Revised
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
ELECTRICAL CHARACTERISTICS (continued)
VCC = 3.6 V, VDD = 1.8 V
Ta = 25 C  2 C unless otherwise specified.
Note)
Parameter
Symbol
Condition
tHD:STA
SCL clock "L" duration
SCL clock "H" duration
Limits
Unit Note
Min
Typ
Max
After tHD:STA,. the first clock
pulse is generated.
0.6
—
—
s
*3,4
tLOW
—
1.3
—
—
s
*3,4
tHIGH
—
0.6
—
—
s
*3,4
Recursive "START" condition
setting time
tSU:STA
—
0.6
—
—
s
*3,4
Data hold time
tHD:DAT
—
0
—
0.9
s
*3,4
Data setup time
tSU:DAT
—
100
—
—
ns
*3,4
SDA, SCL signal rise up time
tr
—
—
300
ns
*3,4
SDA, SCL signal fall time
tf
—
—
300
ns
*3,4
tSU:STO
—
0.6
—
—
s
*3,4
Bus free time between under
"STOP" condition and "START"
condition
tBUF
—
1.3
—
—
s
*3,4
Capacitive load for each bus line
Cb
—
—
—
400
pF
*3,4
Noise margin of each connection
device at Low-level
VnL
—
0.1 
VDD
—
—
V
*3,4
Noise margin of each connection
device at High-level
VnH
—
0.2 
VDD
—
—
V
*3,4
I2C bus (Bus line specifications)
Hold duration (recursive)
Setup time under "STOP" condition
20 +
0.1Cb
20 +
0.1Cb
Note) *3: These are values checked by design but not production tested.
*4: The timing of Fast-mode devices in I2C-bus is specified as follows.
All values referred to VIHmin and VILmax level.
SDA
tf
tLOW
tSU;DAT
tr
SCL
S
tHD;STA
tHD;DAT
tHIGH
tf
tHD;STA
tSU;STA
Sr
tSP
tSU;STO
tr
tBUF
P
S
S : START condition
Sr : Repeat START condition
P : STOP condition
Page 8 of 33
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
PIN CONFIGURATION
1
2
3
4
A
IREF
VCC
CLK
PWM
LED3
B
AD
SEL2
AD
SEL1
GND
LED2
C
Top View
SDA
SCL
VDD
LED1
PIN FUNCTIONS
Pin No.
Pin name
Type
Output
Description
A1
IREF
Resistor connection pin for setting constant current value
A2
VCC
A3
CLKPWM
A4
LED3
B1
ADSEL2
Input
I2C Interface slave address switch pin 2
B2
ADSEL1
Input
I2C Interface slave address switch pin 1
B3
GND
Ground
Ground pin
B4
LED2
Output
LED2 output pin
C1
SDA
Input/Output
C2
SCL
Input
C3
VDD
C4
LED1
Power Supply Power supply pin for LED Circuit
Input/Output
Output
Reference clock Input / Output pin
PWM signal input pin to control LED brightness by the external pulse signal
LED3 output pin
I2C interface data Input / Output pin
I2C interface clock input pin
Power Supply Power supply pin for interface
Output
LED1 output pin
Page 9 of 33
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
FUNCTIONAL BLOCK DIAGRAM
IREF
LED1
LED2
LED3
VCC
A1
C4
B4
A4
A2
VDD C3
Current
Source
Current
Source
Current
Source
SCL C2
PWM
PWM
PWM
WaveForm
Generator
WaveForm
Generator
WaveForm
Generator
CLKPWM A3
Buffer
SDA C1
B2
ADSEL1
OSC
I2C
B1
ADSEL2
B3
GND
Note) This block diagram is for explaining functions. Part of the block diagram may be omitted, or it may be simplified.
Page 10 of 33
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION
1. I2C-bus Interface
1) Basic Rules
 This LSI, I2C-bus, is designed to correspond to the Standard-mode (100 kbps) and Fast-mode(400 kbps)
devices in the version 2.1 of NXP's specification. However, it does not correspond to the HS-mode (to 3.4
Mbps).
 This LSI will be operated as a slave device in the I2C-bus system. This IC will not operate as a master device.
 The program operation check of this LSI has not been conducted on the multi-master bus system and the
mix-speed bus system, yet. The connected confirmation of this LSI to the CBUS receiver also has not been
checked. Please confirm with our company if it will be used in these mode systems. The I2C is the brand of
NXP.
2) START and STOP conditions
A High to Low transition on the SDA line while SCL is High is one such unique case. This situation indicates
START condition. A Low to High transition on the SDA line while SCL is High defines STOP condition.
START and STOP conditions are always generated by the master. After START condition occurs, the bus
will be busy. The bus is considered to be free again a certain time after the STOP condition.
START condition
STOP condition
SDA
SCL
3) Transferring Data
Every byte put on the SDA line must be 8-bits long. The number of bytes that can be transmitted per
transfer is unrestricted. Each byte has to be followed by an acknowledge bit. Data is transferred with the
most significant bit (MSB) first.
P
SDA
acknowledgement
signal from slave
MSB
SCL
S
or
Sr
1
START or
repeated START
condition
2
7
8
9
ACK
acknowledgement
signal from receiver
1
2
3–8
9
ACK
Sr
Sr
or
P
STOP or
repeated START
condition
Page 11 of 33
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Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
1. I2C-bus Interface (continued)
4) Data format
Slave address can be switched by ADSEL1, ADSEL2
pin connections. The chart on the right shows the slave
address of this product.
ADSEL2
ADSEL1
Slave address
Low (Ground)
Low (Ground)
30 h (0110000)
Low (Ground)
High (VDD)
31 h (0110001)
High (VDD)
Low (Ground)
32 h (0110010)
High (VDD)
High (VDD)
33 h (0110011)
Write mode
7-bit
S
8-bit
Slave address
Start condition
W A
8-bit
Sub-address
A
Data byte
A
P
Stop condition
Ack
Write
mode : 0
Read mode
A) When sub-address is not assigned.
When data is read without assigning sub-address, it is possible to read the value of sub-address specified
in Write mode immediately before.
7-bit
8-bit
S
Slave address
Start condition
R A
Data byte
Ack
Read
mode : 1
A
P
Stop condition
Ex) When writing data into address and reading data from "01 h"
7-bit
Write
S
Slave address
0 A Sub-address (01h)
7-bit
Read
S
Slave address
Slave address
Start condition
0 A
Sub-address
Acknowledge bit
Write
mode : 0
A
Data byte
A
P
8-bit
1 A
B) When specifying sub-address
7-bit
8-bit
S
8-bit
8-bit
Data byte
A
P
7-bit
A S
Slave address
Ack Repeated
start condition
8-bit
1 A
Ack
Read
mode : 1
Data byte
A
P
Stop
condition
Sub-address should be assigned first.
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Product Standards
AN30259C
OPERATION (continued)
1. I2C-bus Interface (continued)
4) Data format (continued)
 Continuous Write mode
When using the continuous Write mode, the most significant bit of Sub address should be set to [1].
7-bit
S
8-bit
Slave Address
Start Condition
W A
8-bit
Sub Address
A
Data Byte
A P
Stop Condition
Ack
Write mode : 0 Set most significant bit to [1].
Ex) 05h  85h, 11h  91h
 Continuous Read mode
A) When Sub address is not specified
When the most significant bit specified in the last Write mode is [1], it is possible to perform the continuous
Read mode operation directly after it.
7-bit
8-bit
S
Slave Address
Start Condition
R A
Data byte
A P
Ack
Read mode : 1
Stop condition
Ex) Case where data is read from Address 01h after data is written to Address 01h
7-bit
Write
S
Slave Address
0 A
Sub Address 81h
7-bit
Read
S
Slave Address
8-bit
8-bit
A
Data Byte
8-bit
8-bit
1 A
Data Byte
A P
A
Data Byte
A P
B) When Sub address is specified
Set most significant bit to [1].
8-bit
7-bit
S
Slave Address
Start Condition
0 A
Sub Address
Acknowledge Bit
Write
Mode : 0
A S
7-bit
8-bit
Slave Address
Ack Repeated
Start
Condition
1 A
Ack
Read
Mode : 1
Data Byte
A P
Stop Condition
Sub address is specified initially
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Doc No. TA4-EA-06119
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Product Standards
AN30259C
OPERATION (continued)
2.Register map
Sub
Addr
ess
R/W
Register
Name
Data
D7
D6
D5
D4
D3
D2
D1
D0
00h
W
SRESET
—
—
—
—
—
—
—
SRESET
01h
R/W
LEDON
—
—
LED3ON
LED2ON
LED1ON
02h
R/W
SEL
03h
R/W
LED1CC
LED1CC [7:0]
04h
R/W
LED2CC
LED2CC [7:0]
05h
R/W
LED3CC
LED3CC [7:0]
06h
R/W
LED1SLP
SLP1TT2 [3:0]
SLP1TT1 [3:0]
07h
R/W
LED2SLP
SLP2TT2 [3:0]
SLP2TT1 [3:0]
08h
R/W
LED3SLP
SLP3TT2 [3:0]
SLP3TT1 [3:0]
09h
R/W
LED1CNT1
DUTYMAX1 [3:0]
DUTYMID1 [3:0]
0Ah
R/W
LED1CNT2
DELAY1 [3:0]
DUTYMIN1 [3:0]
0Bh
R/W
LED1CNT3
SLP1DT2 [3:0]
SLP1DT1 [3:0]
0Ch
R/W
LED1CNT4
SLP1DT4 [3:0]
SLP1DT3 [3:0]
0Dh
R/W
LED2CNT1
DUTYMAX2 [3:0]
DUTYMID2 [3:0]
0Eh
R/W
LED2CNT2
DELAY2 [3:0]
DUTYMIN2 [3:0]
0Fh
R/W
LED2CNT3
SLP2DT2 [3:0]
SLP2DT1 [3:0]
10h
R/W
LED2CNT4
SLP2DT4 [3:0]
SLP2DT3 [3:0]
11h
R/W
LED3CNT1
DUTYMAX3 [3:0]
DUTYMID3 [3:0]
12h
R/W
LED3CNT2
DELAY3 [3:0]
DUTYMIN3 [3:0]
13h
R/W
LED3CNT3
SLP3DT2 [3:0]
SLP3DT1 [3:0]
14h
R/W
LED3CNT4
SLP3DT4 [3:0]
SLP3DT3 [3:0]
LED3MD LED2MD LED1MD
IMAX [1:0]
IOEN
CLKDIR
EXTPWM
DLYSEL3 DLYSEL2 DLYSEL1
Note) Read value in " —" is [0].
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Product Standards
AN30259C
OPERATION (continued)
3.Register map details
SRESET
Register Name
Address
R/W
mode
D7
D6
D5
D4
D3
D2
D1
D0
00 h
W
—
—
—
—
—
—
—
SRESET
Default
00 h
0
0
0
0
0
0
0
0
D0 : Software reset pin
[0] : Normal condition ( default )
[1] : Reset (Reset all the other register and returns to Low automatically)
Page 15 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
Register Name
LEDON
Address
R/W
mode
D7
D6
D5
D4
D3
D2
D1
D0
01 h
R/W
—
LED3MD
LED2MD
LED1MD
—
LED3ON
LED2ON
LED1ON
Default
00 h
0
0
0
0
0
0
0
0
D6 : LED3MD
LED3 lighting mode setting
[0] : LED3 constant current mode ( default )
[1] : LED3 slope mode
D5 : LED2MD
LED2 lighting mode setting
[0] : LED2 constant current mode ( default )
[1] : LED2 slope mode
D4 : LED1MD
LED1 lighting mode setting
[0] : LED1 constant current mode ( default )
[1] : LED1 slope mode
D2 : LED3ON
LED3 enable control
[0] : LED3 OFF ( default )
[1] : LED3 ON
D1 : LED2ON
LED2 enable control
[0] : LED2 OFF ( default )
[1] : LED2 ON
D0 : LED1ON
LED1 enable control
[0] : LED1 OFF ( default )
[1] : LED1 ON
LED1 operation mode
D4
D0
LED1MD
LED1ON
0
0
OFF
1
0
OFF
0
1
ON (constant current mode)
1
1
ON (slope mode)
LED1 operation mode
This mode applies to LED2, LED3 operation modes, too.
Page 16 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
Register Name
Address
R/W
mode
02 h
R/W
Default
40 h
SEL
D7
D6
IMAX [1:0]
0
1
D5
D4
D3
D2
IOEN
CLKDIR
EXTPWM
0
0
0
D1
DLYSEL3 DLYSEL2
0
D0
DLYSEL1
0
0
D7-6 : IMAX [1:0] Maximum value, Step value setting for current setting
[00] : Maximum value 12.75 mA, Step value 0.05 mA
[01] : Maximum value 25.50 mA, Step value 0.10 mA ( default )
[10] : Maximum value 31.875 mA, Step value 0.125 mA
[11] : Maximum value 63.75 mA, Step value 0.25 mA
D5 : IOEN CLKPWM pin enable control
[0] : CLKPWM pin invalid ( default )
[1] : CLKPWM pin valid
D4 : CLKDIR CLKPWM pin I/O mode setting
[0] : CLKPWM pin input mode ( default )
[1] : CLKPWM pin output mode
D5
IOEN
D4
D3
CLKDIR EXTPWM
CLKPWM operation mode
(Clock mode/PWM mode)
0
0 or 1
0 or 1
OFF
1
0 or 1
1
External PWM operation mode
1
0
0
External clock input mode
1
1
0
Internal clock output mode
D3 : EXTPWM
CLKPWM pin PWM mode setting
[0] : CLKPWM pin PWM mode invalid ( default )
[1] : CLKPWM pin PWM mode valid
D2 : DLYSEL3
Lighting delay time mode setting at LED3 Slope mode
[0] : LED3 delay time Max 7.50 s mode ( default )
[1] : LED3 delay time Max 1.86 s mode
D1 : DLYSEL2
Lighting delay time mode setting at LED2 Slope mode
[0] : LED2 Delay time Max 7.50 s mode ( default )
[1] : LED2 Delay time Max 1.86 s mode
D0 : DLYSEL1
Lighting delay time mode setting at LED1 Slope mode
[0] : LED1 Delay time Max 7.50 s mode ( default )
[1] : LED1 Delay time Max 1.86 s mode
Please refer to the detail explanation of following register DELAY1 for DLYSEL* details.
<External PWM operation mode>
LED lighting turns ON/OFF by High/Low setting of CLKPWM pin at the time of LED lighting setting.
This mode enables LED lighting synchronization with music signal and brightness control by High/Low Duty ratio.
<External clock input mode>
The reference clock for Slope control is CLKPWM pin. Synchronization with external signals is possible.
<Internal clock output mode>
Internal reference clock for Slope control is generated via CLKPWM pin.
(The output clock will not be available when LED1ON=LED2ON=LED3ON=0.)
Synchronized operation can be possible when more than two pieces of this LSI are connected.
Page 17 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED1CC
Register Name
Address
R/W
mode
03 h
R/W
Default
00 h
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
D2
D1
D0
0
0
0
D2
D1
D0
0
0
0
LED1CC [7 : 0]
0
0
0
0
0
D7-0 : LED1CC [7: 0] Current setting for LED1 constant current output
LED2CC
Register Name
Address
R/W
mode
04 h
R/W
Default
00 h
D7
D6
D5
D4
D3
LED2CC [7 : 0]
0
0
0
0
0
D7-0 : LED2CC [7: 0] Current setting for LED2 constant current output
Register Name
Address
R/W
mode
05 h
R/W
Default
00 h
LED3CC
D7
D6
D5
D4
D3
LED3CC [7 : 0]
0
0
0
0
0
D7-0 : LED3CC [7 : 0] Current setting for LED3 constant current output
Output current value can be changed by IMAX setting as below.
LED*CC [7 : 0]
IMAX [1 : 0]
D7
D6
D5
D4
D3
D2
D1
D0
00h
01h
10h
11h
0
0
0
0
0
0
0
0
0.000 mA
0.000 mA
0.000 mA
0.000 mA
0
0
0
0
0
0
0
1
0.050 mA
0.100 mA
0.125 mA
0.250 mA
0
0
0
0
0
0
1
0
0.100 mA
0.200 mA
0.250 mA
0.500 mA
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
:
0.050 mA
Step
:
:
0.100 mA
Step
:
:
0.125 mA
Step
:
:
0.250 mA
Step
:
1
1
1
1
1
1
1
0
12.700 mA 25.400 mA 31.750 mA 63.500 mA
1
1
1
1
1
1
1
1
12.750 mA 25.500 mA 31.875 mA 63.750 mA
Page 18 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED1SLP
Register Name
Address
R/W
mode
06 h
R/W
Default
88 h
D7
D6
D5
D4
D3
0
D1
D0
SLP1TT1 [3 : 0]
SLP1TT2 [3 : 0]
1
D2
0
0
1
0
0
0
Total time of SLOPE operation for LED1 will be set.
Please refer to following "4. LED control Slope lighting mode" for the details of slope operation.
SLP1TT1 [3 : 0] is set as the chart below shows.
SLP1TT1 [3:0]
Total time of SLOPE operation 1, 2
0
0
0
0
( PWM cycle = 53.3  s )  75  125  0 = 0.0 s
0
0
0
1
( PWM cycle = 53.3  s )  75  125  1 = 0.5 s
0
0
1
0
( PWM cycle = 53.3  s )  75  125  2 = 1.0 s
:
:
:
:
:
:
:
:
:
:
:
:
:
0.5 s Step
:
1
1
0
0
( PWM cycle = 53.3  s )  75  125  12 = 6.0 s
1
1
0
1
( PWM cycle = 53.3  s )  75  125  13 = 6.5 s
1
1
1
0
( PWM cycle = 53.3  s )  75  125  14 = 7.0 s
1
1
1
1
( PWM cycle = 53.3  s )  75  125  15 = 7.5 s
SLP1TT2 [3: 0] is set as the chart below shows.
SLP1TT2 [3:0]
Total time of SLOPE operation 3, 4
0
0
0
0
( PWM cycle = 53.3  s )  75  125  0 = 0.0 s
0
0
0
1
( PWM cycle = 53.3  s )  75  125  1 = 0.5 s
0
0
1
0
( PWM cycle = 53.3  s )  75  125  2 = 1.0 s
:
:
:
:
:
:
:
:
:
:
:
:
:
0.5 s Step
:
1
1
0
0
( PWM cycle = 53.3  s )  75  125  12 = 6.0 s
1
1
0
1
( PWM cycle = 53.3  s )  75  125  13 = 6.5 s
1
1
1
0
( PWM cycle = 53.3  s )  75  125  14 = 7.0 s
1
1
1
1
( PWM cycle = 53.3  s )  75  125  15 = 7.5 s
Page 19 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED2SLP
Register Name
Address
R/W
mode
07 h
R/W
Default
88 h
D7
D6
D5
D4
D3
0
0
D1
D0
SLP2TT1 [3 : 0]
SLP2TT2 [3 : 0]
1
D2
0
1
0
0
0
D3
D2
D1
D0
Total time of Slope operation for LED2 will be set.
LED3SLP
Register Name
Address
R/W
mode
08 h
R/W
Default
88 h
D7
D6
D5
D4
SLP3TT2 [3 : 0]
1
0
0
SLP3TT1 [3 : 0]
0
1
0
0
0
Total time of Slope operation for LED3 will be set.
Please refer to following “ 4. LED control Slope lighting mode ” for the details of slope operation.
The Slope setting charts for LED2 and LED3 are the same as the one for LED1 in the previous page.
Page 20 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED1CNT1
Register Name
Address
R/W
mode
09 h
R/W
Default
F8 h
D7
D6
D5
D4
D3
1
1
D1
D0
DUTYMID1 [3 : 0]
DUTYMAX1 [3 : 0]
1
D2
1
1
0
0
0
D2
D1
D0
D7-4 : DUTYMAX1 [3 : 0] LED1 at Slope lighting maximum PWM Duty setting
D3-0 : DUTYMID1 [3 : 0] LED1 at Slope lighting middle PWM Duty setting
LED1CNT2
Register Name
Address
R/W
mode
0A h
R/W
Default
00 h
D7
D6
D5
0
0
0
0B h
R/W
Default
88 h
DUTYMIN1 [3 : 0]
0
0
0
0
0
D2
D1
D0
LED1 starting delay time setting
LED1 at Slope lighting minimum PWM Duty setting
Register Name
R/W
mode
D3
DELAY1 [3 : 0]
D7-4 : DELAY1 [3 : 0]
D3-0 : DUTYMIN1 [3 : 0]
Address
D4
LED1CNT3
D7
D6
D5
D4
D3
SLP1DT1 [3 : 0]
SLP1DT2 [3 : 0]
1
0
0
0
1
0
0
0
D1
D0
D7-4 : SLP1DT2 [3 : 0] LED1 slope lighting, the period of SLOPE operation 2 time
D3-0 : SLP1DT1 [3 : 0] LED1 slope lighting, the period of SLOPE operation 1 time
Register Name
Address
R/W
mode
0C h
R/W
Default
88 h
LED1CNT4
D7
D6
D5
D4
D3
SLP1DT4 [3 : 0]
1
0
0
D2
SLP1DT3 [3 : 0]
0
1
0
0
0
D7-4 : SLP1DT4 [3 : 0] LED1 slope lighting, the period of SLOPE operation 4 time
D3-0 : SLP1DT3 [3 : 0] LED1 slope lighting, the period of SLOPE operation 3 time
Operation parameter of LED1 SLOPE operation will be set.
Please refer to following “ 4. LED control Slope lighting mode ” for the details of slope operation.
Page 21 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
DUTYMAX1 [3 : 0] correspond to the following PWM Duty setting as the following chart shows.
DUTYMAX1 [3 : 0]
Duty setting for PWM operation [6 : 0]
D3
D2
D1
D0
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
0
0
0
1
1
1
1
0
0
1
0
0
0
1
0
1
1
1
0
0
1
1
0
0
1
1
1
1
1
~
~
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Duty setting for PWM operation [6 : 0]
[0000111] :
7 / 128 = 5.47 %
[0001111] : 15 / 128 = 11.72 %
[0010111] : 23 / 128 = 17.97 %
[0011111] : 31 / 128 = 24.22 %
:
[1110111] : 119 / 128 = 92.97 %
[1111111] : 127 / 128 = 99.22 %
DUTYMID1 [3: 0] correspond to the following PWM Duty setting as the following chart shows.
DUTYMID1 [3 : 0]
Duty setting for PWM operation[6 : 0]
D3
D2
D1
D0
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
1
1
1
0
0
1
0
0
0
1
0
1
1
1
0
0
1
1
0
0
1
1
1
1
1
~
~
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Duty setting for PWM operation [6 : 0]
[0000000] :
0 / 128 = 0 %
[0001111] : 15 / 128 = 11.72 %
[0010111] : 23 / 128 = 17.97 %
[0011111] : 31 / 128 = 24.22 %
:
[1110111] : 119 / 128 = 92.97 %
[1111111] : 127 / 128 = 99.22 %
Page 22 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
DUTYMIN1 [3 : 0] correspond to the following PWM Duty setting as the following chart shows.
DUTYMIN1 [3 : 0]
Duty setting for PWM operation [6 : 0]
D3
D2
D1
D0
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
1
1
0
0
1
1
0
0
0
~
~
1
1
1
0
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
Duty setting for PWM operation [6: 0]
[0000000] :
0 / 128 = 0 %
[0001000] :
8 / 128 = 6.25 %
[0010000] : 16 / 128 = 12.5 %
[0011000] : 24 / 128 = 18.75 %
:
[1110000] : 112 / 128 = 87.5 %
[1111000] : 120 / 128 = 93.75 %
DELAY1 [3 : 0] is set as the following chart shows.
DELAY1 [3 : 0]
DLYSEL1 = 0
DLYSEL1 = 1
0
0
0
0
0.00 s
0.000 s
0
0
0
1
0.50 s
0.124 s
0
0
1
0
1.00 s
0.248 s
~
~
~
1
1
1
0
7.00 s
1.736 s
1
1
1
1
7.50 s
1.860 s
Page 23 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
SLP1DT1 [3 : 0] is set as the following chart shows.
SLP1DT1 [3 : 0]
Detention time at each step
0
0
0
0
( PWM cycle = 53.3  s )  1 = 53.3  s
0
0
0
1
( PWM cycle = 53.3  s )  75  1 = 4.0 ms
0
0
1
0
( PWM cycle = 53.3  s )  75  2 = 8.0 ms
~
~
1
1
1
0
( PWM cycle = 53.3  s )  75  14 = 56.0 ms
1
1
1
1
( PWM cycle = 53.3  s )  75  15 = 60.0 ms
SLP1DT2 [3 : 0] is set as the following chart shows.
SLP1DT2 [3: 0]
Detention time at each step
0
0
0
0
( PWM cycle = 53.3  s )  1 = 53.3  s
0
0
0
1
( PWM cycle = 53.3  s )  75  1 = 4.0 ms
0
0
1
0
( PWM cycle = 53.3  s )  75  2 = 8.0 ms
~
~
1
1
1
0
( PWM cycle = 53.3  s )  75  14 = 56.0 ms
1
1
1
1
( PWM cycle = 53.3  s )  75  15 = 60.0 ms
SLP1DT3 [3 : 0] is set as the following chart shows.
SLP1DT3 [3: 0]
Detention time at each step
0
0
0
0
( PWM cycle = 53.3  s )  1 = 53.3  s
0
0
0
1
( PWM cycle = 53.3  s )  75  1 = 4.0 ms
0
0
1
0
( PWM cycle = 53.3  s )  75  2 = 8.0 ms
~
~
1
1
1
0
( PWM cycle = 53.3  s )  75  14 = 56.0 ms
1
1
1
1
( PWM cycle = 53.3  s )  75  15 = 60.0 ms
SLP1DT4 [3 : 0] is set as the following chart shows.
SLP1DT4 [3: 0]
Detention time at each step
0
0
0
0
( PWM cycle = 53.3  s )  1 = 53.3  s
0
0
0
1
( PWM cycle = 53.3  s )  75  1 = 4.0 ms
0
0
1
0
( PWM cycle = 53.3  s )  75  2 = 8.0 ms
~
~
1
1
1
0
( PWM cycle = 53.3  s )  75  14 = 56.0 ms
1
1
1
1
( PWM cycle = 53.3  s )  75  15 = 60.0 ms
Page 24 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED2CNT1
Register Name
Address
R/W
mode
0D h
R/W
Default
F8 h
D7
D6
D5
D4
D3
1
1
D1
D0
DUTYMID2 [3 : 0]
DUTYMAX2 [3 : 0]
1
D2
1
1
0
0
0
D2
D1
D0
D7-4 : DUTYMAX2 [3 : 0] LED2 at slope lighting, maximum PWM Duty setting
D3-0 : DUTYMID2 [3 : 0] LED2 at slope lighting, middle PWM Duty setting
LED2CNT2
Register Name
Address
R/W
mode
0E h
R/W
Default
00 h
D7
D6
D5
D4
D3
DELAY2 [3 : 0]
0
0
0
DUTYMIN2 [3 : 0]
0
0
0
0
0
D2
D1
D0
D7-4 : DELAY2 [3 : 0] LED2 starting delay time setting
D3-0 : DUTYMIN2 [3 : 0] LED2 at slope lighting, minimum PWM Duty setting
Register Name
Address
R/W
mode
0F h
R/W
Default
88 h
LED2CNT3
D7
D6
D5
D4
D3
SLP2DT2 [3 : 0]
1
0
0
SLP2DT1 [3 : 0]
0
1
0
0
0
D1
D0
D7-4 : SLP2DT2 [3 : 0] LED2 slope lighting, the period of SLOPE operation 2 time
D3-0 : SLP2DT1 [3 : 0] LED2 slope lighting, the period of SLOPE operation 1 time
Register Name
Address
R/W
mode
10 h
R/W
Default
88 h
LED2CNT4
D7
D6
D5
D4
D3
SLP2DT4 [3 : 0]
1
0
0
D2
SLP2DT3 [3 : 0]
0
1
0
0
0
D7-4 : SLP2DT4 [3 : 0] LED2 slope lighting, the period of SLOPE operation 4 time
D3-0 : SLP2DT3 [3 : 0] LED2 slope lighting, the period of SLOPE operation 3 time
Operation parameter of LED2 SLOPE operation will be set.
Each parameter is the same as LED1 Parameter.
Please refer to following “ 4. LED control Slope lighting mode ” for the details of slope operation.
Page 25 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
3.Register map details (continued)
LED3CNT1
Register Name
Address
R/W
mode
11 h
R/W
Default
F8 h
D7
D6
D5
D4
D3
1
1
D1
D0
DUTYMID3 [3 : 0]
DUTYMAX3 [3 : 0]
1
D2
1
1
0
0
0
D2
D1
D0
D7-4 : DUTYMAX3 [3 : 0] LED3 at slope lighting maximum PWM Duty setting
D3-0 : DUTYMID3 [3 : 0] LED3 at slope lighting middle PWM Duty setting
LED3CNT2
Register Name
Address
R/W
mode
12 h
R/W
Default
00 h
D7
D6
D5
D4
D3
DELAY3 [3 : 0]
0
0
0
DUTYMIN3 [3 : 0]
0
0
0
0
0
D2
D1
D0
D7-4 : DELAY3 [3 : 0] LED3 starting delay time setting
D3-0 : DUTYMIN3 [3 : 0] LED3 at slope lighting minimum PWM Duty setting
Register Name
Address
R/W
mode
13 h
R/W
Default
88 h
LED3CNT3
D7
D6
D5
1
0
0
14 h
R/W
Default
88 h
SLP3DT1 [3 : 0]
0
1
0
0
0
D1
D0
LED3 slope lighting, the period of SLOPE operation 2 time
LED3 slope lighting, the period of SLOPE operation 1 time
Register Name
R/W
mode
D3
SLP3DT2 [3 : 0]
D7-4 : SLP3DT2 [3: 0]
D3-0 : SLP3DT1 [3: 0]
Address
D4
LED3CNT4
D7
D6
D5
D4
D3
SLP3DT4 [3: 0]
1
D7-4 : SLP3DT4 [3: 0]
D3-0 : SLP3DT3 [3: 0]
0
0
D2
SLP3DT3 [3: 0]
0
1
0
0
0
LED3 slope lighting, the period of SLOPE operation 4 time
LED3 slope lighting, the period of SLOPE operation 3 time
Operation parameter of LED3 SLOPE operation will be set.
Each parameter is the same as LED1 parameter.
Please refer to following “ 4. LED control Slope lighting mode ” for the details of slope operation.
Page 26 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
4. LED control
Constant current lighting mode
 It is possible to choose "Constant current lighting mode" and "Slope lighting mode" by setting Register LED*MD.
To operate at "Constant current mode", please set LED*MD at "0". ( "*" can be 1, 2, or 3.)
Starting
delay time
Constant current operation
LED*MD
LED*ON
Current value set by LED*CC
LED* output
current
DELAY*
 Upon setting LED*ON to "1", constant current operation will start after the previously set starting delay time,
DELAY*.
 As described in page 30, it is possible to turn on and off at High/Low of CLKPWM pin by making the external PWM
operating mode for CLKPWM pin setting valid.
Page 27 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
4. LED control (continued)
Slope lighting mode
 To operate at "Slope lighting mode", please set LED*MD at "1". ( "*" can be 1, 2, or 3.)
Starting
SLOPE
delay time operation 1
SLOPE
operation 2
SLOPE
SLOPE
operation 3 operation 4
SLOPE
operation 1
LED*MD
LED*ON
DUTYMAX*
DUTYMID*
DUTYMIN*
DELAY*
SLP*TT2
SLP*TT1
SLP*DT1
SLP*DT2
SLP*DT3
SLP*DT4
SLOPE
Operation 1
SLOPE
Operation 2
SLOPE
Operation 3
SLOPE
Operation 4
Detention time
 To repeat Slope operation from 1 to 4 after the previously set starting delay time, DELAY*, please set Register
LED*ON at "1".
 The minimum resolution of SLOPE sequence control is 2.40 MHz reference clock cycle as below.
LED*ON
2.4 MHz reference CLK
Current value set at LED*CC[7: 0]
LED* output current
128 cycle
Duty setting
0 / 128 to 127 / 128
Page 28 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
4. LED control (continued)
1) Total time of Slope operation 1, 2
Total time of Slope operation 1, 2 can be controlled by SLP*TT1[3 : 0].
SLP*TT1[3 : 0] is set as described before.
 SLP*TT1[3 : 0] setting has priority to the case of
SLP*TT1[3 : 0] < "SLOPE operation 1" + "SLOPE operation 2".
 In case of that SLP*TT1[3 : 0] time is over during SLOPE operation 1 (before SLOPE operation 2), SLOPE
operation 2 is omitted and transferred to SLOPE operation 3 from the position of DUTYMAX.
2) Total time of Slope operation 3, 4
Total time of Slope operation 3, 4 can be controlled by SLP*TT2[3: 0].
SLP* TT2[3 : 0] is set as described before.
 SLP*TT2[3 : 0] setting has priority to the case of
SLP*TT2[3 : 0] < "SLOPE operation 3" + "SLOPE operation 4".
 In case of that SLP*TT2[3 : 0] time is over during SLOPE operation 3(before SLOPE operation 4), SLOPE
operation 4 is omitted and transferred to SLOPE operation 1 from the position of DUTYMIN.
3) DUTYMIN, DUTYMID, DUTYMAX setting for SLOPE operation
 SLOPE operation 1
PWM step increases step by step from the value set by DUTYMIN*[3 : 0] to the value set by DUTYMID*[3 : 0].
Please set the period by SLP*DT1[3 : 0] for each step.
The value should be DUTYMIN*[3 : 0] < DUTYMID*[3 : 0].
SLOPE operation 1 operates at DUTYMIN = DUTYMID in case DUTYMIN*[3 : 0]  DUTYMID*[3 : 0] .
 SLOPE operation 2
PWM step increases step by step from the value set by DUTYMID*[3 : 0] to the value set at DUTYMAX*[3 : 0].
Please set the period by SLP*DT2[3 : 0] for each step.
The value should be DUTYMID*[3 : 0] < DUTYMAX*[3 : 0].
SLOPE operation 2 operates at DUTYMID = DUTYMAX in case DUTYMID*[3 : 0]  DUTYMAX*[3 : 0] .
 Slope operation 3
PWM step decreases step by step from the value set by DUTYMAX*[3 : 0] to the value set by DUTYMID*[3 : 0].
Please set the period by SLP*DT3[3: 0] for each step.
The value should be DUTYMID*[3 : 0] < DUTYMAX*[3 : 0].
SLOPE operation 3 operates at DUTYMID = DUTYMAX in case DUTYMID*[3 : 0]  DUTYMAX*[3 : 0] .
 SLOPE operation 4
PWM step decreases step by step from the value set by DUTYMID*[3 : 0] to the value set by DUTYMIN*[3 : 0].
Please set the period by SLP*DT4[3 : 0] for each step.
The value should be DUTYMIN*[3 : 0] < DUTYMID*[3 : 0].
SLOPE operation 4 operates at DUTYMIN = DUTYMID in case DUTYMIN*[3 : 0]  DUTYMID*[3: 0] .
Page 29 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
4. LED control (continued)
4) External PWM operation mode of CLKPWM pin
The lighting synchronization with CLKPWM signal can be turned on by setting "External PWM operation
mode" in register setting.
The maximum frequency which can be input to CLKPWM pin is 20 kHz.
< At Constant current mode >
Constant current operation
LED*ON
CLKPWM
(External input)
Current value set by LED*CC
LED* output current
CLKPWM
operating mode
OFF
External PWM operating mode
Current waveform synchronized with CLKPWM pin
< At Slope lighting mode>
Slope operation
LED*ON
CLKPWM
(External input)
Current value set
to SLOPE setting
LED* output
current
CLKPWM
Operating mode
OFF
External PWM operating mode
Current waveform synchronized with CLKPWM pin
Page 30 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
OPERATION (continued)
4. LED control (continued)
5) External clock input mode and internal clock output mode of CLKPWM pin
The following configuration can be made up by choosing "External clock input mode", "Internal clock output
mode“ in register setting.
< Single application >
VDCDC
CLKPWM
Unused state(CLKPWM operation OFF mode)
< Connected application >
Internal clock output mode
VDCDC
CLKPWM
CLKPWM
・・・
Capable of connected operation
by using synchronous clock
External clock input mode
(Please refer to the explanation of the operation mode of P.17 for the setting of CLKPWM)
< External reference clock application >
VDCDC
External
oscillator
CLKPWM
・・・
Capable of operating using
external reference clock
External clock input mode
(Please refer to the explanation of the operation mode of P.17 for the setting of CLKPWM)
Page 31 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
PACKAGE INFORMATION ( Reference Data )
Page 32 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Doc No. TA4-EA-06119
Revision. 2
Product Standards
AN30259C
IMPORTANT NOTICE
1. When using the LSI for new models, verify the safety including the long-term reliability for each product.
2. When the application system is designed by using this LSI, please confirm the notes in this book.
Please read the notes to descriptions and the usage notes in the book.
3. Please use this product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled
substances, including without limitation, the EU RoHS Directive. Our company shall not be held responsible for any damage
incurred as a result of our IC being used by our customers, not complying with the applicable laws and regulations.
4. Pay attention to the direction of LSI. When mounting it in the wrong direction onto the PCB (printed-circuit-board), it might emit
smoke or ignite.
5. Pay attention in the PCB (printed-circuit-board) pattern layout in order to prevent damage due to short circuit between pins. In
addition, refer to the Pin Description for the pin configuration.
6. Perform a visual inspection on the PCB before applying power, otherwise damage might happen due to problems such as a
solder-bridge between the pins of the semiconductor device. Also, perform a full technical verification on the assembly quality,
because the same damage possibly can happen due to conductive substances, such as solder ball, that adhere to the LSI
during transportation.
7. Take notice in the use of this product that it might be damaged or occasionally emit smoke when an abnormal state occurs
such as output pin-VCC short (Power supply fault), output pin-GND short (Ground fault), or output-to-output-pin short (load
short). Safety measures such as an installation of fuses are recommended because the extent of the above-mentioned
damage and smoke emission will depend on the current capability of the power supply..
8. This IC is intended to be used for general electronic equipment.
Consult our sales staff in advance for information on the following applications: Special applications in which exceptional
quality and reliability are required, or if the failure or malfunction of this IC may directly jeopardize life or harm the human body.
Any applications other than the standard applications intended.
(1) Space appliance (such as artificial satellite, and rocket)
(2) Traffic control equipment (such as for automobile, airplane, train, and ship)
(3) Medical equipment for life support
(4) Submarine transponder
(5) Control equipment for power plant
(6) Disaster prevention and security device
(7) Weapon
(8) Others : Applications of which reliability equivalent to (1) to (7) is required
Our company shall not be held responsible for any damage incurred as a result of or in connection with the IC being used for
any special application, unless our company agrees to the use of such special application.
9. This IC is neither designed nor intended for use in automotive applications or environments unless the specific product is
designated by our company as compliant with the ISO/TS 16949 requirements.
Our company shall not be held responsible for any damage incurred by customers or any third party as a result of or in
connection with the IC being used in automotive application, unless our company agrees to such application in this book.
10. Due to the unshielded structure of this LSI, functions and characteristics of the product cannot be guaranteed under the
exposure of light. During normal operation or even under testing condition, please ensure that the LSI is not exposed to light.
11. Please ensure that your design does not have metal shield parts touching the chip surface as the surface potential is GND
voltage.
12. Pay attention to the breakdown voltage of this LSI when using.
Page 33 of 33
Established : 2012-09-18
Revised
: 2013-02-09
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment, communications
equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book.
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment,
life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of
the products may directly jeopardize life or harm the human body.
It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with
your using the products described in this book for any special application, unless our company agrees to your using the products in
this book for any special application.
(4) The products and product specifications described in this book are subject to change without notice for modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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