HD66724 Datasheet, PDF(73/117 Page) Hitachi Semiconductor – (Graphics LCD Controller/Driver with Key Scan Function)

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HD66724 Datasheet, PDF (73/117 Pages) Hitachi Semiconductor – (Graphics LCD Controller/Driver with Key Scan Function)

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Table 37 Contrast-Adjust Bits (CT) and Variable Resistor Values

HD66724/HD66725

CT Set Value

CT4 CT3 CT2 CT1 CT0

000 0 0

000 0 1

0001 0

0001 1

001 0 0

001 0 1

0011 0

0011 1

0 10 0 0

0 10 0 1

0 101 0

0 101 1

0 11 00

0 11 0 1

0 111 0

0 111 1

10000

1000 1

10 01 0

1001 1

101 0 0

1010 1

101 1 0

1011 1

11000

1100 1

1 101 0

1101 1

111 00

111 0 1

1111 0

1111 1

Variable Resistor Value

(VR)

3.2 x R

3.1 x R

3.0 x R

2.9 x R

2.8 x R

2.7 x R

2.6 x R

2.5 x R

2.4 x R

2.3 x R

2.2 x R

2.1 x R

2.0 x R

1.9 x R

1.8 x R

1.7 x R

1.6 x R

1.5 x R

1.4 x R

1.3 x R

1.2 x R

1.1 x R

1.0 x R

0.9 x R

0.8 x R

0.7 x R

0.6 x R

0.5 x R

0.4 x R

0.3 x R

0.2 x R

0.1 x R

Potential Difference

between V1 and GND

(Small)

(Large)

Display Color

(Light)

(Deep)

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