BU95408 Datasheet, PDF (7/15 Pages) Rohm – 6bit RSDS Source Driver

BU95408
Technical Note
●Pin Descriptions
Pin Name In/Out
D_00P/N ~ D_02P/N
D_10P/N ~ D_12P/N In
D_20P/N ~ D_22P/N
CLK_P/N
In
Y1 ~ Y720
Out
Active
Differential
Differential
-
Descriptions
RSDS^TM input terminals of display data
The 3-bit differential input pairs generate the internal 6-bit data through the
comparison between D_XXP and D_XXN.
The RSDS^TM clock input pair generate the internal shift clock through the
comparison between CLK_P and CLK_N.
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
In
-
R/L=H : Right shift SFTR→Y1→Y720→SFTL
R/L=L : Left shift SFTL→Y720→Y1→SFTR
SEL0
SEL1
The output channel number is controlled by this pin as shown below.
SEL1
SEL0
Number of effective
output terminal
Invalid output terminal
In
-
H
H 720(default)
H
L 702
-
Y355 ~ Y372 become Hi-Z
L
H 690
Y349 ~ Y378 become Hi-Z
L
L 684
Y349 ~ Y384 become Hi-Z
This pin is pulled up to the DV_DD inside the IC.
Low power control pin
LPC1 LPC0
power condition
LPC0
LPC1
In
H
H
H Strong power
H
L Normal power
L
H Ultra-low power
SFTR
L
L Low power(default).
This pin is pulled down to the DV_SS inside the IC.
In/Out
H
SFTR=H: Right shift start pulse input terminal in cascade connection.
SFTR=L: Carry output terminal in cascade connection.
SFTL
In/Out
H
SFTL=H: Carry output terminal in cascade connection.
SFTL=L: Left shift start pulse input terminal in cascade connection.
STB
In
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
In
H
INV:H : Input data are inverted in the IC.
INV:L : Input data are not inverted.
V0 ~ V13
In
-
Input for the γ-correction reference voltage
The following external reference voltages are input.
POL
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 V6 and those for
In
-
even number outputs are V7 to V13.
POL=L : The reference voltage for odd number outputs are V7 to V13 and those for
even number outputs are V0 to V6
IREP1,2
In
-
Repair amplifier input
OREP1,2
Out
-
Repair amplifier output
AV_DD
In
-
Power supply for driver block
AV_SS
DV_DD
In
-
Ground for AV_DD
In
-
Power supply for digital block
DV_SS
In
-
Ground for DV_DD
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2010.10 - Rev.A