S1D1 Epson Electronics America, Inc., S1D1 Datasheet - Page 390

• Manufacturer Part Number: S1D1
• Description: LCD Controller-driver With Built-in Character ROM
• Manufacturer: Epson Electronics America, Inc.

<Setting example: S1D15705
From Fig. 8 and Expression A-1.
In this case, Table 13 lists the V
(B) When using the external resistor (not using the V
<Setting example: S1D15705
Set the value of the electronic control register as the
intermediate value (D5, D4, D3, D2, D1, D0) =
(1,0,0,0,0,0). From the foregoing we can establish the
expression:
From Expression B-1, it follows that
Rev. 3.1a
V
7
voltage adjusting built-in resistor)
The liquid crystal power supply voltage V
also be set by adding the resistors (Ra’ and Rb’)
between V
without the V5 voltage adjusting built-in resistor
(IRS pin=LOW). Also in this case, the liquid crystal
power supply voltage V
the command and the light and shade of liquid
crystal display can be adjusted by using the
electronic control function.
REG
V
V
5
1
1
V
Variable range
Pitch width
31
– .
5
2 1
Rb
Ra
Rb
Ra
V
DD
'
'
'
'
Description
V
electronic control
and V
5
1
1
voltage adjusting
162
162
31
R
Stand-alone Ra'
Stand-alone Rb
and between V
5
V
can be controlled using
–11.6
REG
5
Min.
*****
*****
2 1
voltage variable range and pitch width using the electronic control function.
.
(Expression B-2)
When setting V
When setting V
1
R
D5
to
–
0
and V
V
5
R
can
D4
Table 12
Table 13
5
5
EPSON
–
1
Fig. 11
–9.3
Typ.
5
67
5
+
–
=–7 V at Ta=25 C>
= –9 V at Ta=25 C>
D3
Register
–
1
V
Also, suppose the current applied to Ra’ and Rb’ is 5 A.
It follows that
Therefore from Expressions B-2 and B-3, we have
In this case, Table 14 lists the V
and pitch width using the electronic control function.
EV
(Constant voltage source
The V
1 by setting the external resistors Ra’ and Rb’
within the range of |V
D2
to
0
0
V
Ra
Rb
Ra
Ra
Rb
+ electronic control)
5
'
5
'
'
'
'
Q
voltage can be obtained from Expression B-
Rb
V
D1
1
1
1060
3 12
340
1
0
EV
'
.
Max.
–7.1
Rb
Ra
Rb
Ra
. 1 4
k
k
'
'
'
'
1
M
D0
0
1
V
1
EV
–
162
V
V
5
162
| < |V
DD
5
[mV]
Unit
[V]
V
5
REG
S1D15705 Series
V
voltage variable range
OUT
REG
|.
(Expression B-1)
(Expression B-2)
10–31