PCF8548USLASH2 datasheet(3/40 Pages) PHILIPS

3 / 40 page

1999 Aug 16

Philips Semiconductors

Product speciﬁcation

× 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 and 2)

× voltage multiplier

generating VLCD (external VLCD also possible)

– Generation of intermediate LCD bias voltages

– Oscillator requires no external components

(external clock also possible).

• 400 kbits/s fast I2C-bus interface

• CMOS compatible inputs

• Mux rate: 1 : 65

• Logic supply voltage range VDD1 to VSS:

– 1.9 to 5.5 V.

• High voltage generator supply voltage range VDD2 to

VSS and VDD3 to VSS:

– 2.4 to 4.5 V with LCD voltage internally generated

(voltage generator enabled).

• Display supply voltage range VLCD to VSS:

– 4.5 to 9.0 V

• Low power consumption, suitable for battery operated

systems

• Temperature compensation of VLCD

• Slim chip layout, suitable for Chip-On-Glass (COG)

applications

• Programmable bottom row pads mirroring and top row

pads mirroring, for compatibility with both Tape Carrier

Package (TCP) 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

I2C-bus interface.

3.1

Packages

The PCF8548 is available as chip with bumps in tray; tape

carrier package is available on request.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8548U/2

Tray

chip with bumps in tray

−

PCF8548U/9

Bumped wafer

quarter wafer

−

PCF8548U/2 数据表(PDF) 3 Page - NXP Semiconductors

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