HD66773R Datasheet, PDF (61/133 Pages) Renesas Technology Corp – 262,144-color, 132 x 176-dot Graphics Controller Driver for TFT LCD panels

HD66773R
8-bit interface
68-system 8-bit parallel data transmission becomes operable by setting IM3/2/1/0 pins to
GND/GND/GND/Vcc levels respectively throughDB17-10 pins. 80-system 8-bit parallel data transmission
becomes operable by setting IM3/2/1/0 pins to GND/GND/Vcc/Vcc levels respectively throughDB17-10
pins. The 16-bit instruction is divided into 2 8-bit data and upper 8-bit data is transferred first. The LSB
is not used for each upper/lower-bit data transfer. The 16-bit RAM data is also divided into 2 8-bit data and
upper 9-bit data is transferred first. The unused pins DB9-0 must be fixed to either “Vcc” or “GND”. The
upper-byte write is also required when writing index registers.
8-bit bus interface
H8/2245
CSn*
A1
HWR*
(RD*)
D15 - 0
8
10
GND
CS*
RS
WR* HD66773R
(RD*)
DB17 - 10
DB9 - 0
Data format for 8-bit bus interface
Instr uction
First transfer (Upper)
Input DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10
Second transfer (Lowre )
DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10
Instruction
IB
15
IB
14
IB
13
IB
12
IB
11
IB
10
IB
9
IB
8
IB IB IB IB IB IB IB IB
7654 3210
Instruction code
RAM data write
First transfer (Upper)
Input DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10
Second transfer (Lowre )
DB DB DB DB DB DB DB DB
17 16 15 14 13 12 11 10
GRAM write _{WD WD WD WD WD WD WD WD WD WD WD WD WD WD WD WD}
data _{15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0}
R,G,B assignment ^{R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B4 B3 B2 B1 B0}
1 pixel
Note: 65,536-color real display with 8-bit system interface. Do not set DIT bit to "1".
Rev.1.10, Jun.21.2003, page 61 of 133