HD66520 Datasheet, PDF (24/45 Pages) Hitachi Semiconductor – 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM

CPU
D0
DB0
D1
DB1
D2
DB2
D3
DB3
D4
DB4
D5
DB5
D6
DB6
D7
DB7
HD66520
HD66520
HD66520T
11000000
11000000
11000000
11111100
Display
memory
1111000001 10 1010
1100110001 10 1010
1100110001 10 1010
1111000001 01 0110
01 011010
01 100110
01 100110
01 011010
Display
memory
Y1 Y2 Y3 Y4
Y157 Y159 _{Y1 Y2 Y3 Y4}
Y158 Y160
Y157 Y159
Y158 Y160
Liquid crystal
display image
Y159 Y157
Y160 Y158
Y159 Y157
Y4 Y3 Y2 Y1
Y160 Y158
Y4 Y3 Y2 Y1
CPU
D6
DB0
D7
DB1
D4
DB2
D5
DB3
D2
DB4
D3
DB5
D0
DB6
D1
DB7
10010 101
10010 101
10010 101
10101 001
Display
memory
10100 101 11000000
10011 001 11000000
10011 001 11000000
10100 101 11111100
11110000
11001100
11001100
Display ^{1 1 1 1 0 0 0 0}
memory
HD66520
HD66520
Figure 19 Half VGA Size (2)
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