HD66520 Datasheet, PDF (26/45 Pages) Hitachi Semiconductor – 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM

HD66520T
CPU
D1
DB7
D0
DB6
D3
DB5
D2
DB4
D5
DB3
D4
DB2
D7
DB1
D6
DB0
HD66520
HD66520
11000000
11000000
11000000
11111100
Display
memory
1111000010010 101
1100110010010 101
1100110010010 101
1111000010101 001
Display
memory
10100 101
10011 001
10011 001
10100 101
Y159 Y157
Y160 Y158
Y159 Y157
Y4 Y3 Y2 Y1
Y160 Y158
Y4 Y3 Y2 Y1
Liquid crystal
display image
CPU
D7
DB7
D6
DB6
D5
DB5
D4
DB4
D3
DB3
D2
DB2
D1
DB1
D0
DB0
Y1 Y2 Y3 Y4
Y157 Y159 _{Y1 Y2 Y3 Y4}
Y158 Y160
Y157 Y159
Y158 Y160
01 101010
01 101010
01 101010
01 010110
Display
memory
01 01101011000000
01 10011011000000
01 10011011000000
01 01101011111100
Display
memory
11110000
11001100
11001100
11110000
HD66520
HD66520
Figure 21 Half VGA Size (4)
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