HD66781 Datasheet, PDF (11/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Preliminary
Signals
BST
Number of I/O
Pins
1
O
S1~S720 720
O
FLM1
2
O
FLM2
CL11/
2
O
SFTCLK11
CL12/
SFTCLK12
SFTCLK21 2
O
SFTCLK22
DISPTMG1 2
O
DISPTMG2
M1
2
O
M2
EQ1
2
O
EQ2
DCCLK1 2
O
DCCLK2
GCL1
2
O
GCL2
GDA1
2
O
GDA2
GCS1*
2
O
GCS2*
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