PCF8576DH/2,518 NXP Semiconductors, PCF8576DH/2,518 Datasheet - Page 7

• Manufacturer Part Number: PCF8576DH/2,518
• Description: IC LCD DRIVER 40/160SEG 64TQFP
• Manufacturer: NXP Semiconductors

Specifications of PCF8576DH/2,518

• Package / Case: 64-TQFP, 64-VQFP
• Display Type: LCD
• Configuration: 40 Segment
• Interface: I²C
• Current - Supply: 24µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Number Of Digits: 20
• Number Of Segments: 160
• Maximum Clock Frequency: 400 KHz
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Maximum Supply Current: 50 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 568-4703 - DEMO BOARD LCD GRAPHIC DRIVER
• Digits Or Characters: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-2031-2; 935276165518; PCF8576DH/2-T

NXP Semiconductors
7. Functional description
PCF8576D
Product data sheet
7.1 Power-on reset
The PCF8576D is a versatile peripheral device designed to interface any
microprocessor or microcontroller with 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 possible display configurations of the PCF8576D depend on the number of active
backplane outputs required. A selection of display configurations is shown in
of these configurations can be implemented in the typical system shown in
Table 4.
The host microprocessor or microcontroller maintains the 2-line I
channel with the PCF8576D. The internal oscillator is enabled by connecting
pin OSC to pin V
are generated internally. The only other connections required to complete the system are
to the power supplies (V
At power-on the PCF8576D resets to the following starting conditions:
Number of
Backplanes
4
3
2
1
Fig 4.
•
•
•
•
All backplane outputs are set to V
All segment outputs are set to V
The selected drive mode is: 1:4 multiplex with
Blinking is switched off
V
V
SS
DD
CONTROLLER
PROCESSOR/
The resistance of the power lines must be kept to a minimum.
For chip-on-glass applications, due to the Indium Tin Oxide (ITO) track resistance, each supply line
must be routed separately between the chip and the connector.
Typical system configuration
Selection of possible display configurations
MICRO-
MICRO-
HOST
R ≤
All information provided in this document is subject to legal disclaimers.
SS
2C
Icons
160
120
80
40
. The appropriate biasing voltages for the multiplexed LCD waveforms
t
r
B
Rev. 10 — 14 February 2011
DD
, V
SS
and V
OSC
SDA
SCL
LCD
Digits/Characters
7-segment
20
15
10
5
LCD
LCD
A0
) and the LCD panel chosen for the application.
Universal LCD driver for low multiplex rates
PCF8576D
A1
V
DD
A2
V
LCD
1
SA0
⁄
3
bias
14-segment
10
7
5
2
V
SS
40 segment drives
4 backplanes
2
C-bus communication
PCF8576D
© NXP B.V. 2011. All rights reserved.
LCD PANEL
Dot matrix/
Elements
160 (4 × 40)
120 (3 × 40)
80 (2 × 40)
40 (1 × 40)
(up to 160
elements)
Figure
Table
mdb079
4.
4. All
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