PCF8576TD-T NXP Semiconductors, PCF8576TD-T Datasheet - Page 7

• Manufacturer Part Number: PCF8576TD-T
• Description: LCD Drivers 160 SEGMENT LCD SEGMENT DRIVER
• Manufacturer: NXP Semiconductors

Specifications of PCF8576TD-T

• Number Of Digits: 20
• Number Of Segments: 160
• Maximum Clock Frequency: 288 KHz
• Operating Supply Voltage: 2 V to 9 V
• Maximum Power Dissipation: 400 mW
• Package / Case: VSO-56
• Maximum Supply Current: 180 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PCF8576T,118

Philips Semiconductors
6
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.
Selection of display configurations
2001 Oct 02
handbook, full pagewidth
4
3
2
1
BACKPLANES
Universal LCD driver for low multiplex rates
FUNCTIONAL DESCRIPTION
NUMBER OF
SEGMENTS
V
V
SS
DD
CONTROLLER
PROCESSOR/
160
120
80
40
MICRO-
MICRO-
HOST
R
2C B
t r
7-SEGMENTS NUMERIC
DIGITS
20
15
10
5
R OSC
Fig.3 Typical system configuration.
OSC
SDA
SCL
INDICATOR
1
2
6
SYMBOLS
7
A0
5
20
15
10
V
5
8
DD
PCF8576
A1
7
9
The host microprocessor/microcontroller maintains the
2-line I
The internal oscillator is selected by connecting pin OSC
to pin V
multiplexed LCD waveforms are generated internally. The
only other connections required to complete the system
are to the power supplies (V
LCD panel chosen for the application.
A2
12
V
10
17 to 56
13 to 16
LCD
SA0 V
CHARACTERS
2
11
C-bus communication channel with the PCF8576.
SS
10
SS
. The appropriate biasing voltages for the
8
5
2
40 segment drives
ALPHANUMERIC
4 backplanes
14-SEGMENTS
INDICATOR
SYMBOLS
LCD PANEL
20
10
12
(up to 160
elements)
DD
8
, V
MBK277
SS
and V
Product specification
160 dots (4
120 dots (3
80 dots (2
40 dots (1
PCF8576
DOT MATRIX
LCD
) and the
40)
40)
40)
40)