HD66750 Datasheet, PDF (28/96 Pages) Hitachi Semiconductor – 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions

HD66750/1
Contrast Control
CT5Ð0: These bits control the LCD drive voltage (potential difference between V1 and GND) to adjust
64-step contrast. For details, see the Contrast Adjuster section.
R/W RS DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
0 1 * * * * * * * * * * CT5 CT4 CT3 CT2 CT1 CT0
Figure 7 Contrast Control Instruction
HD66750/1
VLCD
VR
R
+
-
V1
R
+
-
V2
+
-
V3
R0
R
R
GND
+
-
V4
+
-
V5
GND
Figure 8 Contrast Adjuster
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