HD66781 Datasheet, PDF (115/196 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
80-system 18-bit interface
80-system 18-bit parallel data transmission is selected by setting IM3/2/1/0 pins to Vcc1/GND/Vcc1/GND
levels.
MPU
CSn*
A1
HWR
(RD*)
D31-0
CS*
RS
WR* _HD66781
(RD*)
DB17-0
18
Example of Interface with the 18-bit Microcomputer
Instruction
DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB
input _{17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0}
Instruction
IB
15
IB IB IB IB IB IB
14 13 12 11 10 9
IB
8
IB IB IB IB IB IB IB IB
76543210
Instruction code
RAM data write
input
DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10 9 8
6543210
GRAM write
data
R5
R4
R3
R2
R1
R0
G5
G4
G3
G2
G1
G0
B5
B4
B3
B2
B1
B0
OSD data _{R5 R4 R3 R2 R1 α 2 G5 G4 G3 G2 G1 α1 B5 B4 B3 B2 B1} α₀
ODF=0
OSD data
ODF=1
α2 α1 α0 _{R5 R4 R3 R2 R1 G5 G4 G3 G2 G1 B5 B4 B3 B2 B1}
1 pixel
In 18-bit interface mode,
Normal display: 262,144 colors
OSD display: 32,768 colors
18-bit interface data format (Instruction / RAM write data)
Rev.0.5, July.31.2003, page 115 of 196