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INTEGRATED CIRCUITS
DATA SH EET
PCF8548
65 × 102 pixels matrix LCD driver
Product specification
File under Integrated Circuits, IC17
1999 Mar 22
Page 2
Philips Semiconductors Product specification
65 × 102 pixels matrix LCD driver PCF8548
FEATURES
• Single-chip LCD controller/driver
• 65 row and 102 column outputs
• Display data RAM 65 × 102 bits
• On-chip:
– Configurable 5× (4, 3, 2) voltage multiplier generating
V
(external V
LCD
also possible)
LCD
– Generation of intermediate LCD bias voltages
– Oscillator requires no external components (external
clock also possible).
2
• 400 kbits/s fast I
C-bus interface
• CMOS compatible inputs
• Mux rate: 65
• Logic supply voltage range V
− VSS: 1.9 to 5.5 V
DD1
• High voltage generator supply voltage range
V
− VSS: 2.4 to 4.5 V with LCD voltage internally
DD2
generated (voltage generator enabled)
• Display supply voltage range V
− VSS: 4.5 to 9.0 V.
LCD
• Low power consumption, suitable for battery operated
systems
• Temperature compensation of V
LCD
• Slim chip layout, suited for Chip-On-Glass (COG)
applications.
• programmable bottom row pads mirroring and top row
pads mirroring, for compatibility with both TCP (Tape
Carrier Package) and COG applications.
APPLICATIONS
• Telecom equipment
• Portable instruments
• Point of sale terminals.
GENERAL DESCRIPTION
The PCF8548 is a low power CMOS LCD controller/driver,
designed to drive a graphic display of 65 rows and
102 columns. All necessary functions for the display are
provided in a single chip, including on-chip generation of
LCD supply and bias voltages, resulting in a minimum of
external components and low power consumption.
The PCF8548 interfaces to most microcontrollers via an
2
I
C-bus interface.
Packages
The PCF8548 is available as chip with bumps in tray, Tape
Carrier Package (TCP) is available on request.
ORDERING INFORMATION
TYPE NUMBER
NAME DESCRIPTION
PCF8548U/2 − chip with bumps in tray
Full Data Sheet will appear: on WWW (Internet; details in front section/back of this HB/CD-ROM) or updated Loose leaf
1999 Mar 22 2
PACKAGE
Page 3
Philips Semiconductors Product specification
65 × 102 pixels matrix LCD driver PCF8548
BLOCK DIAGRAM
handbook, full pagewidth
V
DD1
V
SS1
V
LCDSENSE
V
SDA_OUT
to V
DD3
to V
SS2
RES
V
LCDIN
LCDOUT
SDA_IN
SCL
PCF8548
BIAS
VOLTAGE
GENERATOR
HIGH
VOLTAGE
GENERATOR
4 STAGES
2
C-BUS INTERFACE
I
SA0
C0 to C101
102 65
COLUMN DRIVERS
DATA LATCHES
DISPLAY DATA RAM
65 × 102 BITS
DISPLAY CONTROL LOGIC
T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12
R0 to R64
ROW DRIVERS
SHIFT REGISTER
OSCILLATOR
TIMING
GENERATOR
OSC
MBK996
Fig.1 Block diagram.
1999 Mar 22 3
Page 4
Philips Semiconductors Product specification
65 × 102 pixels matrix LCD driver PCF8548
DEFINITIONS
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
PURCHASE OF PHILIPS I
2
C COMPONENTS
Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
2
C components conveys a license under the Philips’ I2C patent to use the
1999 Mar 22 4
Page 5
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© Philips Electronics N.V. 1999 SCA63
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Printed in The Netherlands 465008/00/01/pp5 Date of release: 1999 Mar 22
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