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PCA85133U/2DA/Q1 Datasheet(PDF) 5 Page - NXP Semiconductors

Part # PCA85133U/2DA/Q1
Description  Universal LCD driver for low multiplex rates
PDF  44 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA85133U/2DA/Q1 Datasheet(HTML) 5 Page - NXP Semiconductors

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PCA85133_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 1 — 23 October 2009
5 of 44
NXP Semiconductors
PCA85133
Universal LCD driver for low multiplex rates
7.
Functional description
The PCA85133 is a versatile peripheral device, designed to interface between any
microprocessor or microcontroller to a wide variety of LCDs. It can directly drive any static
or multiplexed LCD containing up to four backplanes and up to 80 segments.
The display configurations possible with the PCA85133 depend on the required number of
active backplane outputs. A selection of display configurations is shown in Table 4.
All of the display configurations can be implemented in a typical system as shown in
Figure 3.
The host microprocessor or microcontroller maintains the 2-line I2C-bus communication
channel with the PCA85133.
The internal oscillator is selected by connecting pin OSC to VSS. The only other
connections required to complete the system are the power supplies (VDD,VSS, and VLCD)
and the LCD panel selected for the application.
Table 4.
Possible display configurations
Number of
7-segment alphanumeric
14-segment alphanumeric
Dot matrix
Backplanes
Elements
Digits
Indicator
symbols
Characters
Indicator
symbols
4
320
40
40
20
40
320 (4
× 80)
3
240
30
30
16
16
240 (3
× 80)
2
160
20
20
10
20
160 (2
× 80)
1
80
10
10
5
10
80 (1
× 80)
Fig 3.
Typical system configuration
HOST
MICRO-
PROCESSOR/
MICRO-
CONTROLLER
R
tr
2Cb
SDA
SDAACK
SCL
OSC
FF
80 segment drives
4 backplanes
LCD PANEL
(up to 320
elements)
PCA85133
A0
A1
A2
SA0
VDD
VSS
VSS
VDD
VLCD
013aaa046
≤



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