S1D15715 Epson Electronics America, Inc., S1D15715 Datasheet - Page 30

• Manufacturer Part Number: S1D15715
• Description: Liquid Crystal Display =lcd Driver
• Manufacturer: Epson Electronics America, Inc.

S1D15715 Series Technical Manual
α is a value of the electronic volume, and can be set to one of 32-states by setting the 5-bit data in the electronic
volume register. Table 11 shows the value of α.
Rb/Ra is the V
voltage regulator internal resistance ratio set command.
By setting the 3-bit data in the V
(1+Rb/Ra) ratio will be as the values shown in Table 12.
Fig.11 shows the V
the electronic volume register at T
24
Fig.11 V
D4
0
0
0
1
1
1
1
D3
0
0
0
1
1
1
1
0
Table 11
0
D2
voltage based on the values of V
0
0
0
1
1
1
1
:
:
Internal Rb
Internal Ra
voltage regulator internal resistance ratio, and can be set to one of the 7 steps using the V
0
voltage based on the values of the V
10
D1
9
8
7
6
5
4
3
2
1
0
0
0
1
0
0
1
1
0
D0
0
1
0
0
1
0
1
31
30
29
α
3
2
1
0
a
:
:
=25°C.
the electronic volume register [T
0
voltage regulator internal resistance ratio register, the reference value of
8
V
EV
Electric Volume Resister[Decimal]
+
-
(Constant voltage source + electronic volume)
0
voltage regulator internal resistance ratio register and
Fig.10
EPSON
D3
0
0
0
0
0
1
1
1
1
voltage regulator internal resistance ratio register and
16
D2
0
0
1
1
0
0
1
1
Table 12 (Reference values)
D1
a
0
1
0
1
0
1
0
1
=25°C]
External resistor can be used.
V
V
0
2
4
6
0
SS
24
1+Rb/Ra
5.45
5.71
6.00
6.32
6.67
7.06
7.50
1
3
5
32
Rev.1.0
0