ROHM BU95306

Drivers for Large LCD Panels
6bit RSDSTM
Source Driver
BU95306
No.10043EAT03
●Description
ROHMLCD drivers for large panels are display drivers optimized for large LCDs in a variety of applications, including
desktop PCs, laptops, and TVs. The broad lineup is offered in low amplitude differential transmission interface type
TM
(RSDS ) featuring low EMI, 6bit gradation precision, and different output configurations (642 and up) for wide compatibility.
●Features
1) 600/618/630/642 output channels
TM
2) 6bit 9pair RSDS inputs
3) Dot & n-line inversion available
4) Built-in 2ch repair amplifiers
5) γ correction is possible
6) Built-in input data reversing function (INV)
7) Output voltage range : AVSS+0.1V~AVDD-0.1V
8) High speed data transfer: fCLK (MAX) =85MHz
9) Logic power supply voltage (DVDD) : 2.3~3.6V
10) Driver power supply voltage (AVDD) : 8.0~13.5V
11) Package: COF48
●Applications
TFT LCD Panels
●Line up matrix
Number of outputs
BU95101
BU95303
BU95306
BU95408
384
384 / 414 / 420 / 432
600 / 618 / 630 / 642
684 / 690 / 702 / 720
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© 2010 ROHM Co., Ltd. All rights reserved.
1/14
2010.10 - Rev.A
Technical Note
BU95306
●Absolute maximum ratings
Parameter
Symbol
Ratings
Unit
Logic power supply voltage
DVDD
-0.3 ~ +4.5
V
Driver power supply voltage
AVDD
-0.3 ~ +14.0
V
Logic input voltage
VI1
-0.3 ~ DVDD+0.3
V
Logic output voltage
VO1
-0.3 ~ DVDD+0.3
V
Driver input voltage
VI2
-0.3 ~ AVDD+0.3
V
Driver output voltage
VO2
-0.3 ~ AVDD+0.3
V
Storage temperature range
Tstg
-55~+125
℃
Symbol
Ratings
Unit
Logic power supply voltage
DVDD
+2.3 ~ +3.6
V
Driver power supply voltage
AVDD
+8.0 ~ +13.5
V
V0~V15
0.1 ~ AVDD-0.1
V
Driver output voltage
VO
0.1 ~ AVDD-0.1
V
Output load capacitance
CL
150
pF
fCLK(MAX)
85
MHz
Topr
-30 ~ +85
℃
●Recommended Operating Range
Parameter
γ-correction reference voltage
Maximum clock frequency
Operating temperature range
* AVSS=DVSS=0V
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© 2010 ROHM Co., Ltd. All rights reserved.
2/14
2010.10 - Rev.A
Technical Note
BU95306
●Electrical characteristics (DC)
(Unless otherwise noted, Ta=-30~+85℃, DVDD=2.3~3.6V, AVDD=8.0~13.5V, DVSS=AVSS=0V)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Logic Part
DVDD=3.3V, Data=00h-3Fh(dot),
fclk=65MHz, fstb=50kHz, 1Line-inverison
Logic supply current
IDDL
-
4
8
mA
Input “H” voltage
V1H
0.7DVDD
-
DVDD
V
Input “L” voltage
V1L
0
-
0.3DVDD
V
Input “H” current
I1H1
-
-
+1
μA
VIN=DVDD
Input “L” current
I1L1
-1
-
-
μA
VIN=DVSS
Input “H” current 2
I1H2
-
20
40
μA
VIN=DVDD
DVDD=3.3V
Input “L” current 2
I1L2
-3
-
+3
μA
VIN=DVSS
Output “H” voltage
VOH
DVDD-0.5
-
-
V
IOH=-1.0mA
Output “L” voltage
VOL
-
-
0.5
V
IOL=1.0mA
IDDA
-
9
12
mA
RγUP
10.9
15.5
20.2
kΩ
RγLOW
10.8
15.4
20.0
kΩ
-
±25
-
mV
-
±10
±25
mV
-
±25
-
mV
-
±3
±10
mV
V8~V15
AVDD=12V
Yout=0.1V~1.5V,Yout=10.5V~11.9V
AVDD=12V, Yout=1.5V~10.5V
AVDD=12V
Yout=0.1V~1.5V,Yout=10.5V~11.9V
AVDD=12V, Vout=1.5V~10.5V
AVDD=12V, Data=32-gray
R/L,SFTR,INV,SFTL,
POL,STB,SEL0,SEL1,
LPC0,
LPC1 ,TEST0
Dxx, SFTR, POL, INV,
SFTL,CLK,STB,R/L
SEL0,SEL1,
LPC0,LPC1,TEST0
Built-in Pull down R
SFTR,SFTL
Driver part
Driver supply current
γ correction resistance
Output voltage deviation
VOD1*1
AVDD=12V, Data=00h-3Fh(dot),
fclk=65MHz, fstb=50kHz,1Line-inverison,
noLoad, LPC:normal
V0~V7
Output swing voltage
Deviation
VRMS
Output voltage deviation 2
(between chips)
VOD2*3
-
-
±7.5
mV
Repair input voltage
V1NB
0.1
-
AVDD-0.1
V
Repair input “H” current
I1BH
-1
-
+1
μA
VIN=AVDD=13.5V
Repair input “L” current
I1BL
-1
-
+1
μA
VIN=AVSS
Driver output “H” current
Driver output“L” current
*2
IREP1,2
IVOHY
-
-
-0.4
mA
Y1~Y642, AVDD=12V, Vx=6 V,Yout=11V
IVOHR
-
-
-0.8
mA
OREP1,2 ,AVDD=12V, Vx=6 V, Yout=11V
IVOLY
0.4
-
-
mA
Y1~Y642, AVDD=12V, Vx=6 V,Yout=1V
IVOLR
0.8
-
-
mA
OREP1,2 ,AVDD=12V, Vx=6 V, Yout=1V
VIHRSDS
100
200
-
mV
VILRSDS
-
-200
-100
mV
VCMRSDS
0.4
-
DVDD-1.2
V
RSDSTM input part
RSDSTM input “H” voltage
RSDS
TM
input “L” voltage
RSDSTM common input
voltage
*1
*2
*3
*4
*5
VCMRSDS=+1.2V*4
CLKP/N,DXXP/N
(X=0,1,2)
VDIFF=200mV*5
VOD1=measured output voltage - averaged output voltage of all outputs
VRMS=measured output swing voltage - averaged output swing voltage of all outputs
VOD2=averaged output voltage - target value
VCM RSDS = (VCLKP+VCLKN)/2 or (VDXXP+VDXXN)/2
VDIFF = VCLKP- VCLKN or VDXXP-VDXXN
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© 2010 ROHM Co., Ltd. All rights reserved.
3/14
2010.10 - Rev.A
Technical Note
BU95306
●Electrical characteristics (AC)
(Unless otherwise noted, Ta=-30~+85℃, DVDD=2.3~3.6V, AVDD=8.0~13.5V, DVSS=AVSS=0V)
Limits
Parameter
Symbol
Unit
Min.
Typ.
Max.
Conditions
Clock pulse width
tw
1/85MHz
-
-
ns
Clock pulse "H" period
th
5
-
-
ns
Clock pulse "L" period
tl
5
-
-
ns
Data setup time
tsu1
2
-
-
ns
Data hold time
thd1
0
-
-
ns
Start pulse setup time
tsu2
1
-
-
ns
Start pulse hold time
thd2
2
-
-
ns
Start pulse width
tWSFT
1
-
2
CLK period
tdc
-
-
11
ns
STB pulse width
tWSTB
1
-
-
CLK period
Final data timing
tLDT
1
-
-
CLK period
Time between STB↑and start pulse↑ tSTB-SFT
6
-
-
CLK period
Time between STB↑and CLK↓
tSTB-CLK
4
-
-
ns
tsp
14
-
-
ns
-
-
3
μs
LPC:normal
*1*3
-
-
5
μs
LPC:normal
*2*3
-
-
5
μs
LPC:low power
*1*3
-
-
7
μs
LPC:low power
*2*3
Carry output delay time
POL/STB setup time
Output delay time
*1
*2
*3
tdout
CL=15pF
The value is specified when the drive voltage value reaches the target output voltage level of 90%.
The value is specified when the drive voltage value reaches the target output voltage level of 6-bit accuracy.
Output load condition:
R1=R2=R3=10kΩ, C1=C2=C3=20pF
Output
R1
R2
R3
(Test Probe)
C1
C2
C3
Vcom=AVSS
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© 2010 ROHM Co., Ltd. All rights reserved.
4/14
2010.10 - Rev.A
Technical Note
BU95306
AVDD
AVSS
LPC0,LPC1
・・・・・・・・・・・・・・・・・
Output Buffer
2
OREP2
IREP2
・・・・・・・・・・・・・・・・・
OREP1
IREP1
V0 ~V13
POL
Y640
Y641
Y642
Y1
Y2
Y3
●Block diagram
D/A Converter
14
6 6 6
6 6 6
・・・・・・・・・・・・・・・・・
Level Shifter
6 6 6
Data Latch
STB
6 6 6
INV
Latch
D20P/N~D22P/N
6 6 6
・・・・・・・・・・・・・・・・・
Data Register
RSDS Rx
D00P/N~D02P/N
D10P/N~D12P/N
6 6 6
・・・・・・・・・・・・・・・・・
214 bit Bi-directional Shift Register
2
CLKP/N
SFTR
SEL1, SEL0
R/L
DVDD
DVSS
SFTL
Fig.1 Block diagram
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© 2010 ROHM Co., Ltd. All rights reserved.
5/14
2010.10 - Rev.A
Technical Note
BU95306
●Pin configuration
IREP2
OREP2
AVSS
AVDD
DVSS
DVDD
SFTL
D22P
D22N
D21P
D21N
D20P
D20N
D12P
D12N
D11P
D11N
D10P
D10N
DVDD
LPC0
R/L
V15
V14
V13
V12
V11
V10
V9
V8
AVDD
AVSS
V7
V6
V5
V4
V3
V2
V1
V0
DVSS
TEST0
CLKP
CLKN
STB
POL
INV
D02P
D02N
D01P
D01N
D00P
D00N
SEL1
SEL0
SFTR
DVDD
LPC1
DVSS
AVSS
AVDD
OREP1
IREP1
Y642
Y641
Y640
・
・
・
・
・
・
・
・
・
・
・
BU95306
・
・
・
Top View
・
・
・
・
・
・
・
・
・
・
・
・
Y3
Y2
Y1
↓
BUMP
BUMP
IC
Fig.2 Pin configuration (Top View)
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© 2010 ROHM Co., Ltd. All rights reserved.
6/14
2010.10 - Rev.A
Technical Note
BU95306
●Pin Descriptions
Pin Name
In/Out
Active
Descriptions
TM
D00P/N~D02P/N
D10P/N~D12P/N
D20P/N~D22P/N
In
RSDS input terminals of display data
Differential The 3-bit differential input pairs generate the internal 6-bit data through the
comparison between DXXP and DXXN.
CLKP/N
In
Differential
Out
-
R/L
In
-
SEL0
SEL1
In
-
LPC0
LPC1
In
H
SFTR
In/Out
H
SFTL
In/Out
H
STB
In
INV
In
H
V0~V15
In
-
POL
In
-
IREP1,2
In
-
Repair amplifier input
OREP1,2
Out
-
Repair amplifier output
AVDD
In
-
Power supply for driver block
AVSS
In
-
Ground for AVDD
DVDD
In
-
Power supply for digital block
DVSS
In
-
Ground for DVDD
Y1~Y642
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© 2010 ROHM Co., Ltd. All rights reserved.
The RSDSTM clock input pair generate the internal shift clock through the
comparison between CLKP and CLKN.
Driver outputs for D/A converted 64 gray scale analog voltage.
The shift direction of internal shift register is controlled by this pin as shown below.
R/L=H : Right shift SFTR→Y1→Y642→SFTL
R/L=L : Left shift SFTL→Y642→Y1→SFTR
The output channel number is controlled by this pin as shown below.
Number of effective
SEL1
SEL0
Invalid output terminal
output terminal
H
H
600
Y301~Y342 become Hi-Z
H
L
618
Y310~Y333 become Hi-Z
L
H
630
Y316~Y327 become Hi-Z
L
L
642 (default)
This pin is pulled down to the DVSS inside the IC.
Low power control pin
LPC1
LPC0
power condition
H
H
Strong power
H
L
Normal power
L
H
Ultra-low power
L
L
Low power(default).
This pin is pulled down to the DVSS inside the IC.
SFTR=H:Right shift start pulse input terminal in cascade connection.
SFTR=L:Carry output terminal in cascade connection.
SFTL=H:Carry output terminal in cascade connection.
SFTL=L:Left shift start pulse input terminal in cascade connection.
The data in the data register are transferred to the data latch at the rising edge of STB,
then the gray scale voltages are output from the buffer at the falling edge of STB.
Terminal to specify inverting or non-inverting of display data
INV:H : Input data are inverted in the IC.
INV:L : Input data are not inverted.
Input for the γ-correction reference voltage
The following external reference voltages are input.
At the rising edge of STB, the state of POL are transferred to the driver.
POL=H : The reference voltage for odd number outputs are V0 to V7 and those for
even number outputs are V8 to V15.
POL=L : The reference voltage for odd number outputs are V8 to V15 and those for
even number outputs are V0 to V7
7/14
2010.10 - Rev.A
Technical Note
BU95306
●Relationship between Input Data and Output Terminals
R/L=H (Right Shift)
First
Data
Last
→
D00P~D02N
D10P~D12N
D20P~D22N
…
D00P~D02N
D10P~D12N
D20P~D22N
Y1
Y2
Y3
…
Y640
Y641
Y642
Output
R/L=L (Left Shift)
First
Data
Output
Last
→
D00P~D02N
D10P~D12N
D20P~D22N
…
D00P~D02N
D10P~D12N
D20P~D22N
Y640
Y641
Y642
…
Y1
Y2
Y3
●Relationship between R/L , SFTR , SFTL and Output Direction
R/L pin controls the shift direction of the internal shift resistor as shown below.
Terminal
Right Shift Mode
Left Shift Mode
R/L
“H”
“L”
SFTR
Input
Output
SFTL
Output
Input
Output direction
Y1,Y2,Y3→Y640,Y641,Y642
Y642,Y641,Y640→Y3,Y2,Y1
●Relationship between POL and Output Polarity
POL
Y1
*1
“H”
+
*1
“L”
-*1
Y2
-
+
Y3
+
-
Y4
-
+
Y5
+
-
Y6
-
+
・
・
・
・
・
・
Y637
+
-
Y638
-
+
Y639
+
-
Y640
-
+
Y641
+
-
Y642
-
+
+: The reference voltage are V0~V7
-: The reference voltage are V8~V15
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© 2010 ROHM Co., Ltd. All rights reserved.
8/14
2010.10 - Rev.A
Technical Note
BU95306
●Relationship between Input Data and Output Voltage
The LCD driver output voltages are determined by the input data and 16γ-corrected power supply.
0.1V≦V15≦V14≦V13≦V12≦V11≦V10≦V9≦V8≦0.5AVDD
0.5 AVDD≦V7≦V6≦V5≦V4≦V3≦V2≦V1≦V0≦AVDD -0.1V
V1(upper side:00)
V2(upper side:16)
V3(upper side:20)
V4(upper side:24)
V5(upper side:32)
V6(upper side:56)
V7(upper side:63)
V8(lower side:63)
V9(lower side:56)
V10(lower side:32)
V11(lower side:24)
V12(lower side:20)
V13(lower side:16)
00
16
20 24
Fig.3
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© 2010 ROHM Co., Ltd. All rights reserved.
32
56
V14(lower side:00)
63
Input data - γ correction curve
9/14
2010.10 - Rev.A
Technical Note
BU95306
●γ correction Power Supply Circuit
16 external γ-corrected power supply is connected to ladder resistors inside IC.
IC Internal Circuit
V0
RS0 = 476Ω
V1
RS1 = 7,523Ω
V2
RS2 = 705Ω
V3
RS3 = 573Ω
V4
RS4 = 981Ω
V5
RS5 = 2,433Ω
V6
External
γ-corrected
power supply
RS6 = 2,819Ω
V7
V8
RS7 = 3,290Ω
V9
RS8 = 2,916Ω
V10
RS9 = 933Ω
V11
RS10 = 543Ω
V12
RS11 = 669Ω
V13
RS12 = 6,678Ω
V14
RS13 = 392Ω
V15
Fig.4
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© 2010 ROHM Co., Ltd. All rights reserved.
γ correction power supply circuit
10/14
2010.10 - Rev.A
Technical Note
BU95306
●RSDSTM data timing
thd2
thd1
thd1
tsu2
tsu1
tsu1
CLKP/N
SFTR
D00P/N
Y1
(0)
Y1
(1)
Y4
(0)
Y4
(1)
Y7
(0)
Y7
(1)
D01P/N
Y1
(2)
Y1
(3)
Y4
(2)
Y4
(3)
Y7
(2)
Y7
(3)
D02P/N
Y1
(4)
Y1
(5)
Y4
Y4
Y7
(4)
(5)
(4)
Y7
(5)
D10P/N
Y2
(0)
Y2
(1)
Y5
(0)
Y5
(1)
Y8
(0)
Y8
(1)
D11P/N
Y2
Y2
(3)
Y5
(2)
Y5
(3)
Y8
(2)
(2)
Y8
(3)
D12P/N
(4)
Y2
(5)
Y5
(4)
Y5
(5)
Y2
Y8
(4)
Y8
(5)
D20P/N
Y3
Y3
(1)
Y6
(0)
(0)
Y6
(1)
D21P/N
Y3
(2)
Y3
(3)
Y6
(2)
Y6
(3)
Y9
(2)
Y9
(3)
D22P/N
Y3
(4)
Y3
(5)
Y6
(4)
Y6
(5)
Y9
(4)
Y9
(5)
Y9
(0)
Y9
(1)
Fig.5 RSDSTM data timing
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© 2010 ROHM Co., Ltd. All rights reserved.
11/14
2010.10 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
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12/14
Yout
POL
STB
1
2
th
0V(DVSS)
INVALID
tWSFT
tsu2 thd2
SFTL output
(SFTR output)
(SFTL input)
SFTR input
-DXXN
DXXP
-CLKN
CLKP
tw
VDIFE
tl
VCM
EVEN
ODD
tsu1 thd1
tsu1 thd1
3
214
tdc
EVEN
ODD
tdc
EVEN
215
ODD
tsp
tLDT
Last
Data
Hi-Z*1
tSTB-CLK
2
tdout
3
Share*2
*1: Hi-Z period = tSTB-CLK + tWSTB + 2CLK period
*2: share period = tWSTB
1CLK period
tWSTB
tSTB-SFT
INVALID
tSTB-CLK
1
BU95306
Technical Note
●Timing chart
Fig.6 Timing chart
2010.10 - Rev.A
Technical Note
BU95306
●Start pulse timing
2CLK period over
CLKP
SFTR input
(SFTL)
1st
2nd
Invalid
DATA
1(E)
1(O)
2(E)
2(O)
When the start pulse (SFTR, SFTL) is input two times, the data is sampled based on the second start pulse.
●Power Supply Sequence
Maintain the following power supply order to prevent the device from being destroyed.
Turn on power order : DVDD → Input signal → AVDD, V0~V15
Turn off power order : AVDD, V0~V15 → Input signal → DVDD
Voltage
AVDD
V0~V15
DVDD
Input signal
DVSS, AVSS
t
●Notes for use
1. When power is first supplied to the CMOS IC, it is possible that the internal logic may be unstable and rush current may
flow instantaneously.
Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of
connections.
2. For ICs with more than one power supply, it is possible that rush current may flow instantaneously due to the internal
powering sequence and delays.
Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of
wiring.
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© 2010 ROHM Co., Ltd. All rights reserved.
13/14
2010.10 - Rev.A
Technical Note
BU95306
●Ordering part number
B
U
Part No.
9
5
3
0
6
-
Part No.
S
R
Reel packing specification
SR: A pattern side is an inner arrow.
The output side is the right side.
SL: A pattern side is an inner arrow.
The output side is the left side.
BR: A pattern side is an outside arrow.
The output side is the right side.
BL: A pattern side is an outside arrow.
The output side is the left side.
COF48
<Tape dimensions>
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<Packing specifications>
14/14
2010.10 - Rev.A
Notice
Notes
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The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
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While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
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