pca8576c NXP Semiconductors, pca8576c Datasheet - Page 8

• Manufacturer Part Number: pca8576c
• Description: Universal Lcd Driver For Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8576C
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. 1 — 22 July 2010
LCD
V
V
=
is sometimes referred as the LCD operating voltage.
LCD
LCD
3V
off RMS
=
=
(
(
--------------------- -
6
4
×
)
×
3
V
when
Universal LCD driver for low multiplex rates
off RMS
3
)
(
1
=
⁄
3
)
2.309V
bias is used.
=
2.449V
off RMS
(
off RMS
(
)
PCA8576C
)
© NXP B.V. 2010. All rights reserved.
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LCD