ML9058E Datasheet, PDF (33/76 Pages) List of Unclassifed Manufacturers – 132-Channel LCD Driver with Built-in RAM for LCD Dot Matrix Displays

LAPIS Semiconductor
FEDL9058E-01
ML9058E
VREG is a constant voltage generated inside the IC and VRS pin output voltage.
Here,  is the electronic potentiometer function which allows one level among 64 levels to be selected by merely
setting the data in the 6-bit electronic potentiometer register. The values of  set by the electronic potentiometer
register are shown in Table 10.
Table 10 Relationship between electronic potentiometer register and 

DB5
DB4
DB3
DB2
DB1
DB0
63
0
0
0
0
0
0
62
0
0
0
0
0
1
61
0
0
0
0
1
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
Rb/Ra is the voltage V1 adjustment internal resistor ratio and can be adjusted to one of 7 levels by the voltage V1
adjustment internal resistor ratio set command. The reference values of the ratio (1 + Rb/Ra) according to the 3-bit
data set in the voltage V1 adjustment internal resistor ratio setting register are listed in Table 11.
Table 11 Voltage V1 adjustment internal resistor ratio setting register values and the ratio
(1+Rb/Ra) (Nominal)
Register
DB2
DB1
DB0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
(1 + Rb/Ra)
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Note: Use V1 gain in the range from 3 to 6 times. Because this LSI has temperature gradient, V1
voltage rises at lower temperatures. When using V1 gain of 6 times, adjust the built-in electronic
potentiometer so that V1 voltage does not exceed 18 V.
When V1 is set using the built-in resistance ratio, the accuracies are shown in Table 12.
Table 12 Relation between V1 Output Voltage Accuracy and V1 Gain Using Built-in Resistor
Parameter
V1 gain
3 times 3.5 times 4 times 4.5 times 5 times 5.5 times 6 times
Unit
V1 output voltage accuracy
2.5
2.5
2.5
2.5
2.5
2.5
2.5
%
V1 maximum output voltage
9
10.5
12
13.5
15
16.5
18
V
Note: The V1 maximum output voltages in Table 12 are nominal values when Tj = 25°C, and electronic
potentiometer  = 0. The V1 output voltage accuracy in Table 12 are values when V1 load current
I = 0 A, 20 V is externally input to V_OUT, and display is turned OFF.
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