Abov MC97F60128 - Page 318

318
MC97F60128
ABOV Semiconductor Co., Ltd.
LCDBCR (LCD Automatic Bias Control Register) : 400CH (XSFR)
7
6
5
4
3
2
1
0
LCDABC
BMSEL2
BMSEL1
BMSEL0
BMODEB1
BMODEB0
BMODEA1
BMODEA0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 00H
LCDABC
LCD Automatic Bias Control
0
LCD Automatic Bias is Off
1
LCD Automatic Bias is On
(LCD contrast control function is disable when LCDABC=1)
BMSEL[2:0]
Select Bias A/B Mode Time (Refer to the Figure “LCD bias automatic control”)
Bias Mode A
Bias Mode B
0
0
0
1/64
63/64
LCD COM Period
0
0
1
2/64
62/64
LCD COM Period
0
1
0
3/64
61/64
LCD COM Period
0
1
1
4/64
60/64
LCD COM Period
1
0
0
5/64
59/64
LCD COM Period
1
0
1
6/64
58/64
LCD COM Period
1
1
0
7/64
57/64
LCD COM Period
1
1
1
8/64
56/64
LCD COM Period
BMODEB[1:0]
Select Bias Mode B Resistor (Refer to the Figure “LCD bias automatic control”)
0
0
Mid-H resistance
(RLCD: 120kΩ @1/3 and 1/2bias, 90kΩ @1/4bias)
0
1
Low resistance
(RLCD: 10kΩ @1/3 and 1/2bias, 10kΩ @1/4bias)
1
0
Mid-L resistance
(RLCD: 60kΩ @1/3 and 1/2bias, 45kΩ @1/4bias)
1
1
High resistance
(RLCD: 300kΩ @1/3 and 1/2bias, 225kΩ @1/4bias)
BMODEA[1:0]
Select Bias Mode A Resistor (Refer to the Figure “LCD bias automatic control”)
0
0
Mid-H resistance
(RLCD: 120kΩ @1/3 and 1/2bias, 90kΩ @1/4bias)
0
1
Low resistance
(RLCD: 10kΩ @1/3 and 1/2bias, 10kΩ @1/4bias)
1
0
Mid-L resistance
(RLCD: 60kΩ @1/3 and 1/2bias, 45kΩ @1/4bias)
1
1
High resistance
(RLCD: 300kΩ @1/3 and 1/2bias, 225kΩ @1/4bias)