參數(shù)資料
型號(hào)： 935261851026
廠商： NXP SEMICONDUCTORS
元件分類： 顯示驅(qū)動(dòng)器
英文描述： LIQUID CRYSTAL DISPLAY DRIVER, UUC56
封裝： DIE-56
文件頁(yè)數(shù)： 45/46頁(yè)
文件大?。?/td> 246K
代理商： 935261851026
1998 Jul 30
8
Philips Semiconductors
Product specication
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 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
40
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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