ST7565S ETC-unknow, ST7565S Datasheet - Page 37

• Manufacturer Part Number: ST7565S
• Description: 65 X 132 Dot Matrix Lcd Controller/driver
• Manufacturer: ETC-unknow

ST7565S
(C) When External Resistors are Used (The V5 Voltage Regulator Internal Resistors Are Not Used) (2)
When the external resistor described above are used, adding
a variable resistor as well makes it possible to perform fine
adjustments on Ra’ and Rb’, to set the liquid crystal drive
voltage V
function makes it possible to control the liquid crystal power
supply voltage V
Setup example: When selecting Ta = 25°C and V
V (using R2) for an ST7565S the temperature gradient
= –0.05%/°C.
When the central value for the electronic volume register is
set at (D5, D4, D3, D2, D1, D0) = (1, 0, 0, 0, 0, 0), then é =
31 and V
R
When ÔR
When the current flowing V
Ver 0.3c
ÀÌéÐ
ÀÈéÐ
2
= 0 è, in order to make V
åôº
åõº
»
»
REG
V
Variable Range
Notch width
5
2
Ä
Ä
. In this case, the use of the electronic volume
5
= R
¾
¾
= –2.1 V so, according to equation C-1, when Ô
é
2
åƾåÅ
åľåÅ
, in order to make V = –5 V,
È
øü³åÄ
øü³åÅ
øü³åÆ
åÄ
åÆ
5
î
Ð
Ð
Ø ø
ôÿ
Ø ø
ôÿ
Ø ø
ôÿ
é
by commands to adjust the liquid
»
»
Ä
Ä
¾
¾
¼ »
¼ »
DD
Øé
åƾåÅÀÔåÅ
åƾåÅÀÔåÅ
5
and V
åľÔåÅ
åľÔåÅ
= –9 V,
Ð
Min
–8.7 (63 levels)
Ä À
Ä À
»
5
Ä À
is set to 5 uA,
ÄÉÅ
ÄÉÅ
ÆÄ
ÆÄ
Ôå
é
ÄÉÅ
é
å
¼
¼
¼
¼
Å
¼
5
»ÀÅÁļ
»ÀÅÁļ
»
= –5 to –9
é
é
é
Ä À
Øé
Øé
åØÚ
»ùü ø÷³ ÿôúø³ ø³ÿ ¾øÿøö
üö³ ÿ ø¼
ÄÉÅ
é
ð
Typ
–7.0 (central value)
Figure 12
Table 15
53
37/72
¼
crystal display brightness.
In the range where | V
calculated by equation C-1 below based on the R
(variable resistor) and R
be subjected to fine adjustments (Ô R
With this, according to equation C-2, C-3 and C-4,
The V
electron volume function is as shown in Table 15.
é
åÄ Ð ÅÉÇþè
åÅ Ð ÅÄÄþè
åÆ Ð ÌÅÈþè
åØÚ
5
voltage variable range and notch width based on the
–5.3 (0 level)
Max
5
| < | V
3
OUT
settings, where R
| the V
2
).
Units
[V]
[mV]
5
voltage can be
2002/07/22
é
1
é
and R
××
È
2
can
2