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PCF8576CU/7 数据表(PDF) 8 Page - NXP Semiconductors

部件名 PCF8576CU/7
功能描述  Universal LCD driver for low multiplex rates
PDF  44 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

PCF8576CU/7 数据表(HTML) 8 Page - NXP Semiconductors

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1998 Jul 30
8
Philips Semiconductors
Product specification
Universal LCD driver for low multiplex
rates
PCF8576C
6
FUNCTIONAL DESCRIPTION
The PCF8576C is a versatile peripheral device designed
to interface to any microprocessor/microcontroller to a
wide variety of LCDs. It can directly drive any static or
multiplexed LCD containing up to four backplanes and up
to 40 segments. The display configurations possible with
the PCF8576C depend on the number of active backplane
outputs required; a selection of display configurations is
given in Table 1.
All of the display configurations given in Table 1 can be
implemented in the typical system shown in Fig.4.
The host microprocessor/microcontroller maintains the
2-line I2C-bus communication channel with the
PCF8576C. The internal oscillator is selected by tying
OSC (pin 6) to VSS (pin 11). The appropriate biasing
voltages for the multiplexed LCD waveforms are
generated internally. The only other connections required
to complete the system are to the power supplies (VDD,
VSS and VLCD) and the LCD panel chosen for the
application.
Table 1 Selection of display configurations
NUMBER OF
7-SEGMENTS NUMERIC
14-SEGMENTS
ALPHANUMERIC
DOT MATRIX
BACKPLANES SEGMENTS
DIGITS
INDICATOR
SYMBOLS
CHARACTERS
INDICATOR
SYMBOLS
4
160
20
20
10
20
160 dots (4
× 40)
3
120
15
15
8
8
120 dots (3
× 40)
2
80
10
10
5
10
80 dots (2
× 40)
1
40
5
5
2
12
40 dots (1
× 40)
Fig.4 Typical system configuration.
handbook, full pagewidth
HOST
MICRO-
PROCESSOR/
MICRO-
CONTROLLER
R
tr
2CB
SDA
SCL
OSC
1
17 to 56
13 to 16
2
6
78
512
910
11
40 segment drives
4 backplanes
LCD PANEL
(up to 160
elements)
PCF8576CT
A0
A1
A2
SS
SA0 V
SS
V
DD
V
DD
V
LCD
V
MBE524



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