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参数资料
| 型号： | 933740730118 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 显示驱动器 |
| 英文描述： | LIQUID CRYSTAL DISPLAY DRIVER, PDSO56 |
| 封装： | PLASTIC, VSOP-56 |
| 文件页数： | 42/44页 |
| 文件大小： | 192K |
| 代理商： | 933740730118 |
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2001 Oct 02
7
Philips Semiconductors
Product specication
Universal LCD driver for low multiplex rates
PCF8576
6
FUNCTIONAL DESCRIPTION
The PCF8576 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 PCF8576 depend on the number of active backplane
outputs required; a selection of display configurations is
given in Table .
All of the display configurations given in Table can be
implemented in the typical system shown in Fig.3.
The host microprocessor/microcontroller maintains the
2-line I2C-bus communication channel with the PCF8576.
The internal oscillator is selected by connecting pin OSC
to pin VSS. 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.
Selection of display congurations
NUMBER OF
7-SEGMENTS NUMERIC
14-SEGMENTS
ALPHANUMERIC
DOT MATRIX
BACKPLANES
SEGMENTS
DIGITS
INDICATOR
SYMBOLS
CHARACTERS
INDICATOR
SYMBOLS
4
160
20
10
20
160 dots (4
× 40)
3
120
15
8
120 dots (3
× 40)
2
80
10
5
10
80 dots (2
× 40)
1
40552
12
40 dots (1
× 40)
Fig.3 Typical system configuration.
handbook, full pagewidth
HOST
MICRO-
PROCESSOR/
MICRO-
CONTROLLER
R
tr
2CB
SDA
SCL
OSC
ROSC
1
17 to 56
13 to 16
2
6
78
512
910
11
40 segment drives
4 backplanes
LCD PANEL
(up to 160
elements)
PCF8576
A0
A1
A2
SS
SA0 V
SS
V
DD
V
DD
V
LCD
V
MBK277
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