PCF8535U datasheet(3/52 Pages) PHILIPS

3 / 52 page

1999 Aug 24

Philips Semiconductors

Objective speciﬁcation

× 133 pixel matrix driver

PCF8535

FEATURES

• Single-chip LCD controller/driver

• 65 row, 133 column outputs

• Display data RAM 65 × 133 bits

• 133 icons (last row is used for icons)

• Fast mode I2C-bus interface (400 kbits/s)

• Software selectable multiplex rates:

1:17,1:26, 1:34,1:49and1:65

• On-chip:

– Generation of intermediate LCD bias voltages

– Oscillator requires no external components

(external clock also possible)

– Generation of VLCD.

• CMOS compatible inputs

• Software selectable bias configuration

• Logic supply voltage range VDD1 to VSS1 4.5 to 5.5 V

• Supply voltage range for high voltage part VDD2 and

VDD3 to VSS2 and VSS3 4.5 to 5.5 V

• Display supply voltage range VLCD to VSS:

– Mux rate 1 : 65: 8 to 16 V.

• Low power consumption, suitable for battery operated

systems

• Internal Power-on reset and/or external reset

• Temperature read back available

• Manufactured in N-well silicon gate CMOS process.

APPLICATIONS

• Automotive information systems

• Telecommunication systems

• Point-of-sale terminals

• Instrumentation.

GENERAL DESCRIPTION

The PCF8535 is a low power CMOS LCD row/column

driver, designed to drive dot matrix graphic displays at

multiplex rates of 1 : 17, 1 : 26, 1 : 34, 1 : 49 and 1 : 65.

Furthermore, it can drive up to 133 icons. All necessary

functions for the display are provided in a single chip,

including on-chip generation of LCD bias voltages,

resulting in a minimum of external components and low

power consumption. The PCF8535 is compatible with

most microcontrollers and communicates via an industry

standard two-line bidirectional I2C-bus serial interface.

All inputs are CMOS compatible.

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8535U

−

chip with bumps in tray

−

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