HD66750 Datasheet, PDF(60/96 Page) Hitachi Semiconductor – 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

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HD66750 Datasheet, PDF (60/96 Pages) Hitachi Semiconductor – 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

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HD66750/1

Table 20 Contrast Adjustment Bits (CT) and Variable Resistor Values

CT Set Value

CT5 CT4 CT3 CT2 CT1 CT0

000000

000001

000010

000011

000100

000101

000110

000111

001000

001001

001010

001011

001100

Variable Resistor Potential Difference

Value (VR)

between V1 and GND

3.20 x R

3.15 x R

(Small)

3.10 x R

3.05 x R

3.00 x R

2.95 x R

2.90 x R

2.85 x R

2.80 x R

2.75 x R

2.70 x R

2.65 x R

2.60 x R

Display Color

(Light)

011111

100000

100001

100010

100011

100100

100101

100110

100111

101000

111001

1.65 x R

1.60 x R

1.55 x R

1.50 x R

1.45 x R

1.40 x R

1.35 x R

1.30 x R

1.25 x R

1.20 x R

1.15x R

111100

111101

111110

111111

0.20 x R

0.15 x R

0.10 x R

0.05 x R

(Large)

(Deep)

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