Renesas F-ZTAT H8 Series Hardware Manual page 367

Bits 3 to 0—Contrast Control Setting (CCR3 to CCR0): Bits 3 to 0 specify the value of the
contrast control resistance between the V
resistance between the V
The contrast control resistance can be set in the range from 0.1R to 1.6R, where R is the LCD
bleeder resistance.
Bit 3: Bit 2:
CCR3 CCR2
0 0
1
1 0
1
LCD
and V1 levels, it is possible to adjust the contrast of the LCD panel.
LCD
Bit 1: Bit 0:
CCR1 CCR0
0 0
1
1 0
1
0 0
1
1 0
1
0 0
1
1 0
1
0 0
1
1 0
1
13. Dot Matrix LCD Controller (H8/3857 Group)
and V1 levels. By adjusting the contrast control
Contrast Control Resistance
1.6R
1.5R
1.4R
1.3R
1.2R
1.1R
1.0R
0.9R
0.8R
0.7R
0.6R
0.5R
0.4R
0.3R
0.2R
0.1R
Rev.3.00 Jul. 19, 2007 page 341 of 532
(initial value)
REJ09B0397-0300