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PDF HD66781 Data sheet ( Hoja de datos )
| Número de pieza | HD66781 | |
| Descripción | 720-Channel Source Driver for a-Si TFT/Low Temperature Poli-Si TFT Panels | |
| Fabricantes | Renesas Technology | |
| Logotipo |  |
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HD66781
Preliminary
720-channel Source Driver
for a-Si TFT/Low Temperature Poly-Si TFT Panels
with 262,144-color display RAM
REJxxxxxxx-xxxxZ
Rev.0.5
July.31.2003
• Index
Description ......................................................................................................... 6
Features ......................................................................................................... 7
Block Diagram .................................................................................................... 8
Pin Functions ...................................................................................................... 9
HD66781 power-supply specification.................................................................................... 14
Pad Arrangement................................................................................................. 15
Pad Coordinate.................................................................................................... 16
Bump Arrangement............................................................................................. 18
Example of Connecting HD66781 and HD66783 .............................................. 19
Example of Connecting HD66781 and HD667P21 ............................................ 20
Block Function.................................................................................................... 21
(1) System interface................................................................................................................ 21
(2) External Display Interface (RGB I/F, VSYNC I/F).......................................................... 22
(3) Address Counter (AC) ...................................................................................................... 22
(4) Graphic RAM (GRAM).................................................................................................... 22
(5) Grayscale Voltage Generation Circuit .............................................................................. 22
(6) Timing generator............................................................................................................... 23
(7) Oscillation Circuit (OSC) ................................................................................................. 23
(8) Liquid Crystal Display Driver Circuit .............................................................................. 23
(9) Gate driver/power supply IC interfacing circuit ............................................................... 23
GRAM Address MAP......................................................................................... 24
Relation between GRAM addresses and Screen positions (SS=0, BGR=0) .......................... 24
Relation between GRAM data and Display data (SS=0, BGR=0)......................................... 25
Relation between GRAM address and Screen position (SS=1, BGR=1)............................... 28
Relation between GRAM data and Display data (SS=1, BGR=1)......................................... 29
Rev. 0.5, July.31.2003, page 1 of 196
1 page  
HD66781
Preliminary
Partial display mode............................................................................................................... 193
Absolute Maximum Values ................................................................................ 194
Rev.0.5, July.31.2003, page 5 of 196
5 Page 
HD66781
Preliminary
Signals
BST
Number of I/O
Pins
1O
S1~S720 720
O
FLM1
FLM2
2
CL11/
SFTCLK11
CL12/
SFTCLK12
2
SFTCLK21 2
SFTCLK22
O
O
O
DISPTMG1 2
DISPTMG2
O
M1
M2
EQ1
EQ2
2
2
DCCLK1
DCCLK2
GCL1
GCL2
2
2
GDA1
GDA2
GCS1*
GCS2*
2
2
O
O
O
O
O
O
Connected Functions
to
Unused
pins
MPU or
LCDC
Output a pulse that indicates the start of blank (front porch).
Open
When writing data in synchronization with display scan, serve as
a trigger signal.
Amplitude: Vcc1 and GND.
Liquid
Crystal
Output a voltage applied to liquid crystal.
The correspondence between the RAM write address and
source output signal is changeable with SS bit.
Open
When SS=0, data in the RAM address “h00000” are output from
S1-3.
When SS=1, data in the RAM address “h00000” are output from
S718-720.
S1, S4, S7, ... display red (R), S2, S5, S8, ... display green (G),
and S3, S6, S9, ... display blue (B) (SS = 0).
HD66783 or Output a frame head pulse.
HD667P21
Open
HD66783 or
HD667P21
Output a different signal according to the LTPS register setting. Open
LTPS=0: Output a pulse of one line cycle. Connect to CL1 pin of
HD66783.
LTPS=1: Gate shift clock for LTPS. Output a pulse of 2-line
cycles.
HD667P21 Output a different signal according to the LTPS register setting. Open
LTPS=0: Output is GND. No connection with HD66783 is
required.
LTPS=1: Gate shift clock for LTPS. Output a pulse of 2-line
cycles.
HD66783 or Gate off signal during partial display.
HD667P21 Low: Voff output
High: Normal output
Open
For an LTPS LCD panel, a control signal for the gate driver
incorporated therein.
HD66783 or Output alternating pulse.
HD667P21
Open
HD66783 or
HD667P21
Make Vcom output Hi-z in Vcom transition timing during Vcom
alternating drive.
Low: Output VcomH or VcomL from Vcom
High: Make Vcom output Hi-z
Open
HD66783 or Output step-up clocks.
HD667P21
Open
HD66783 or Clock signal for making a serial transfer of values set in registers Open
HD667P21 to gate driver/power supply IC. Output data from the falling
edge of the clock.
HD66783 or Data signal for making a serial transfer of values set in registers Open
HD667P21 to gate driver/power supply IC.
HD66783 or Select the HD66781.
HD667P21 Low: Select the HD66781 (Serial transfer)
High: Not select the HD66781 (Serial transfer not available)
Open
Rev.0.5, July.31.2003, page 11 of 196
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HD66781.PDF ] | |
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