pca85132 NXP Semiconductors, pca85132 Datasheet - Page 9

• Manufacturer Part Number: pca85132
• Description: Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA85132_1
Product data sheet
Using
1
1
The advantage of these LCD drive modes is a reduction of the LCD full scale voltage V
as follows:
These compare with
It should be noted that V
⁄
⁄
2
2
•
•
bias is
bias is
1:3 multiplex (
1:4 multiplex (
Equation
----------
3
3
21
=
=
All information provided in this document is subject to legal disclaimers.
3, the discrimination for an LCD drive mode of 1:3 multiplex with
1.732
1.528
1
1
⁄
⁄
2
2
bias):
bias):
V
LCD
and the discrimination for an LCD drive mode of 1:4 multiplex with
.
Rev. 01 — 6 May 2010
LCD
V
V
=
is sometimes referred as the LCD operating voltage.
LCD
LCD
3V
off RMS
=
=
(
(
--------------------- -
6
4
×
)
×
3
V
when
off RMS
3
)
(
1
=
⁄
3
)
2.309V
bias is used.
=
LCD driver for low multiplex rates
2.449V
off RMS
(
off RMS
(
)
PCA85132
)
© NXP B.V. 2010. All rights reserved.
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LCD