HD66765 Datasheet, PDF (30/71 Pages) Hitachi Semiconductor – 396-channel Segment Driver with Internal RAM for 4096-color Displays

Write Data to GRAM (R22h)
HD66765
R/W RS
W1
DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0 ^{WD WD WD WD WD WD WD WD WD WD WD WD}
11 10 9 8 7 6 5 4 3 2 1 0
Figure 21 Write Data to GRAM Instruction
WD11–0 : Write 12-bit data to the GRAM. This data calls each grayscale palette. After a write, the
address is automatically updated according to the AM and I/D bit settings. During the standby mode, the
GRAM cannot be accessed.
ation ^{GRAM write data}
DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0
0
0
0 ^{WD WD WD WD WD WD WD WD WD WD WD WD}
11 10 9 8 7 6 5 4 3 2 1 0
ific ^{R3 R2 R1 R0 G3 G2 G1 G0 B3 B2 B1 B0}
1 pixel data
ec _{Figure 22 GRAM Write Data Instruction}
Sp Table 14 GRAM Data and Grayscale Palette
y _{GRAM Data Setting}
ar ^{R3 R2 R1 R0}
in ^{G3 G2 G1 G0}
B3 B2 B1 B0
lim ⁰
0
0
0
e ⁰
0
0
1
Pr ⁰
0
1
0
Grayscale Palette
PK04
PK03
PK14
PK13
PK24
PK23
PK02
PK12
PK22
PK01
PK11
PK21
PK00
PK10
PK20
0
0
1
1
PK34
PK33
PK32
PK31
PK30
0
1
0
0
PK44
PK43
PK42
PK41
PK40
0
1
0
1
PK54
PK53
PK52
PK51
PK50
0
1
1
0
PK64
PK63
PK62
PK61
PK60
0
1
1
1
PK74
PK73
PK72
PK71
PK70
1
0
0
0
PK84
PK83
PK82
PK81
PK80
1
0
0
1
PK94
PK93
PK92
PK91
PK90
1
0
1
0
PK104
PK103
PK102
PK101
PK100
1
0
1
1
PK114
PK113
PK112
PK111
PK110
1
1
0
0
PK124
PK123
PK122
PK121
PK120
1
1
0
1
PK134
PK133
PK132
PK131
PK130
1
1
1
0
PK144
PK143
PK142
PK141
PK140
1
1
1
1
PK154
PK153
PK152
PK151
PK150
30