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PCF85133U/2DA/1 데이터시트(PDF) 4 Page - NXP Semiconductors

부품명 PCF85133U/2DA/1
상세설명  Universal LCD driver for low multiplex rates
PDF  41 Pages
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제조업체  NXP [NXP Semiconductors]
홈페이지  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCF85133U/2DA/1 데이터시트(HTML) 4 Page - NXP Semiconductors

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PCF85133_1
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 1 — 17 February 2009
4 of 41
NXP Semiconductors
PCF85133
Universal LCD driver for low multiplex rates
7.
Functional description
The PCF85133 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 PCF85133 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 PCF85133.
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 numeric
14-segment numeric
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)
PCF85133
A0
A1
A2
SA0
VDD
VSS
VSS
VDD
VLCD
001aaj582
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