HD66760 Datasheet, PDF (71/105 Pages) Hitachi Semiconductor – 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors

VLCD
VLCD
VLCD
HD66760
VLCD
VR
VR
VR
VR
V1
V1
V1
V1
R
R
R
R
V2
V2
V2
V2
R
R
R
R
V3
V3
V3
V3
6R
5R
4R
3R
V4
V4
V4
V4
R
R
R
R
V5
V5
V5
V5
R
R
R
R
GND
GND
GND
GND
GND
i) 1/ 10 bias
(BS2–0 = 001)
VLCD
GND
ii) 1/ 9 bias
(BS2–0 = 010)
VLCD
GND
iii) 1/ 8 bias
(BS2–0 = 011)
VLCD
VR
VR
V1
V1
R
R
VR
V2
V2
V1
R
R
R
V3
V3
V2
2R
R
R
V4
V4
V3, 4
R
R
R
V5
V5
V5
R
R
R
GND
GND
GND
GND
iv) 1/7 bias
(BS2–0 = 100)
GND
v) 1/6 bias
(BS2–0 = 101)
GND
vi) 1/5 bias
(BS2–0 = 110)
GND
vii) 1/ 4 bias
(BS2–0 = 111)
Note: R = Reference resistor
Figure 48 Liquid Crystal Display Drive Bias Circuit