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For Information Equipment
MN83876A
Liquid Crystal Display Panel Source Driver
Overview
The MN83876A converts digital display data from a personal computer or engineering workstation into analog signal
voltages for driving thin-film transistor color LCD panels.
Features
Driver capable of displaying 260,000 colors with
built-in D/A converter accepting 6-bit digital inputs
Choice of 300 or 309 drive outputs
Seven-segment gamma correction
Data settings of 01 and 3E in addition to 00, 07, 17, 27,
37, and 3F for output voltage inflection points
Drive system that does not require precharging
Supports serial cascade connections.
Automatic clock suspension after reading in specified
data volume
Choice of shift register shift directions
Support for data inversion control at the clock cycle
level.
Digital portions operate at low voltages (2.5 to 3.6 V)
Maximum operating frequency of 55 MHz (2.5 to 3.6 V)
Choice of 3.3 or 5 V for analog portions
Applications
Personal computers and workstations
(available for SVGA and XGA)
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MN83876A For Information Equipment
Block Diagram
AV
DD
AV
SS
V
REF0 to 7
VOP (2 pins)
VSEL
A
D00 to D05
D10 to D15
D20 to D25
INV
(2 pins)
(2 pins)
6
6
6
Latch
PLSR
PRSL
Y1
Y2 Y3
Y308
Y309
Output circuit
Digital-to-analog converter
686 6 6 6
300/309 × 6 bits × 2 line latch
6
6 6 6 6 6
6
6
6
2 1031
100/103-bit shift register
DV
DD
DV
SS
TEST
RL FY MODE
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For Information Equipment MN83876A
Application Circuit Example
Tantalumelectrolytic
capacitor
10µF
Tantalumelectrolytic
capacitor
10µF
+
–
Gamma
correction
resistors
Total:
approximately
1 kΩ
+
–
Ceramic
capacitor
0.1µF
Ceramic
capacitor
0.1µF
10kΩ
10kΩ
AV
DD
0V
AV
DD
–
+
Operational
amplifier
0V
Tantalumelectrolytic capacitor
10µF
+
0.1µF
–
VOP (+AV
V
Gamma correction
REF6
potentials
V
REF7
V
REF5
V
REF4
V
REF3
V
REF2
V
REF0
V
REF1
H, V, CLK
D0 (5:0)
D1 (5:0)
D2 (5:0)
Ceramic
capacitor
Note: Add capacitors, as appropriate, to stabilize the power supply.
/2)
DD
8
18
Display data
Display controller
Functions: Generating LCD
synchronization signals and
controlling conversion to
AC signals (data inversion)
2
3
Control signal
Source drivers
(8 or 10 MN83876As)
LCD panel
× 600, or 1024 × 768)
(800
Control signal
Gate driver
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