HD66787 Datasheet, PDF (78/159 Pages) Renesas Technology Corp – 528-channel, One-chip Driver with 262,144-color Display RAM and Power Supply Circuit for Low-temperature Poli-Si TFT (LTPS-TFT) Panels with Incorporat

HD66787
Preliminary
80-system 9-bit interface
The 80-system 9-bit parallel data transmission becomes operable by setting IM3/2/1/0 pins to
IOVcc/GND/IOVcc/IOVcc levels respectively. When transmitting a 16-bit instruction, it is divided into
upper and lower 8 bits (the LSB is not used) and the upper 8 bits are transmitted first. The RAM data is
also divided into the upper and lower 9 bits, and the upper bits are transmitted first. The unused pins
DB8-0 pins must be fixed to either IOVcc or GND level. When writing into the index register, the upper
byte (8 bits) must be written.
H8/2254
CSn*
A1
HWR*
(RD*)
D15-0
CS*
RS
WR*
(RD*)
DB17-9
9
DB8-0
9
GND
HD66787
9-bit microcomputer and HD66787
Instructions
1^st Transfer (Upper)
2^nd Transfer (Lower)
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 17 16 15 14 13 12 11 10 9
Instruction
IB IB IB IB IB IB IB IB
15 14 13 12 11 10 9 8
IB IB IB IB IB IB IB IB
76543210
Instruction code
RAM data write
1^st Transmission (Upper)
2^nd Transmission (Lower)
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 17 16 15 14 13 12 11 10 9
Write data to
GRAM ^{R5 R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B5 B4 B3 B2 B1 B0}
One pixel
262,144 colors are available in the 9 - bit system interface.
Data format for 9-bit interface
Rev.0.22, May.23.2003, page 78 of 159