mc68hc908lv8 Freescale Semiconductor, Inc, mc68hc908lv8 Datasheet - Page 129

• Manufacturer Part Number: mc68hc908lv8
• Description: M68hc08 Microcontrollers 8-bit Microcontroller With Integrated Lcd Driver
• Manufacturer: Freescale Semiconductor, Inc

LCCON[3:0] — LCD Contrast Control
Freescale Semiconductor
These read/write bits select the bias voltage, V
Maximum contrast is set when LCCON[3:0] =%0000;
minimum contrast is set when LCCON[3:0] =%1111.
LCCON3
FC
X
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
LCCON2
LC
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Table 9-2. Resistor Ladder Selection
Table 9-3. LCD Bias Voltage Control
MC68HC908LV8 Data Sheet, Rev. 2
Each resistor is approximately 37 kΩ (default)
Each resistor is approximately 146 kΩ
Fast charge mode
LCCON1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
bias
LCCON0
. This voltage controls the contrast of the LCD.
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Action
(approximate % of V
Bias Voltage
11.6
13.5
15.3
17.2
18.8
20.5
22.0
23.6
25.0
26.4
27.7
0.6
2.9
5.2
7.4
9.6
DD
)
I/O Registers
129