HD66766R Datasheet, PDF (57/97 Pages) Hitachi Semiconductor – 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors

HD66766R
Rev. 1.0-1 / September 2002
4096 colors Display Function
HD66766R is equipped with 4096 colors display function. When setting SPR bit = 1, it operates 4096
color display function, and uses 16 bits instead of 12 bits. Upper 4 bits are invalid when operating 4096
colors display function. While operating 4096 colors display function, write mode 3 and 4 in graphic
operation are not usable.
GRAM
46,464 byte
RAM write data
65k format
RAM write
DB15
DB0
R4 R3 R2 R1 R0 G5 G 4 G3 G 2G 1G0 B4 B3 B2 B1 B0
RAM read data
65k format
RAM read
DB15
DB0
R4 R3 R2 R1 R0 G5 G4 G3 G2 G1 G0 B4 B3 B2 B1 B0
DB15
DB0
0 0 0 0 R3 R2 R1 R0 G3 G2 G1 G0 B3 B2 B1 B0
Write data
4096 color format
DB15
DB0
0 0 0 0 R3 R2 R1 R0 G3 G2 G1 G0 B3 B2 B1 B0
Read data
4096 color format
Figure 43 4096 color display data write and read format
Table 34 4,096 color R, G, B data and selective grayscale palette
R, G, B data
0000
0001
0010
0011
0100
0101
0110
0111
Selective grayscale palette
PK0
PK2
PK4
PK6
PK8
PK10
PK12
PK14
R, G, B data
1000
1001
1010
1011
1100
1101
1110
1111
Selective grayscale palette
PK17
PK19
PK21
PK23
PK25
PK27
PK29
K31
57