PCF8820 datasheet(2/60 Pages) PHILIPS

2 / 60 page

2000 Dec 07

Philips Semiconductors

Product speciﬁcation

× 101 Grey-scale/ECB colour dot matrix

LCD driver

PCF8820

CONTENTS

FEATURES

APPLICATIONS

GENERAL DESCRIPTION

ORDERING INFORMATION

BLOCK DIAGRAM

PINNING

6.1

Pad configuration

6.2

Pad functions

6.2.1

Row driver outputs

6.2.2

Column driver outputs

6.2.3

Ground supply

6.2.4

Supply voltage

6.2.5

Voltage multiplier output

6.2.6

Voltage multiplier regulation input

6.2.7

Supply voltage of bias voltage generator

6.2.8

LCD intermediate bias voltages

6.2.9

Serial data input

6.2.10

Serial data output

6.2.11

Serial clock input

6.2.12

Slave address inputs

6.2.13

Oscillator signal input

6.2.14

External reset input

6.2.15

Test pads

FUNCTIONAL DESCRIPTION

7.1

Oscillator

7.2

I2C-bus interface controller

7.3

Input filters

7.4

Display Data RAM (DDRAM)

7.5

Timing generator

7.6

Address counter

7.7

Display address counter

7.8

Command decoder

7.9

Column driver outputs

7.10

Row driver outputs

7.11

Bias voltage generator

7.12

High voltage generator

7.13

Temperature compensation

7.14

Temperature sensor

7.15

LCD driver waveforms

7.16

DDRAM to display mapping

7.17

DDRAM addressing

7.18

I2C-bus interface

7.18.1

Bit transfer

7.18.2

START and STOP conditions

7.18.3

System configuration

7.18.4

Acknowledge

7.18.5

I2C-bus protocol

7.18.6

Command decoder

7.18.7

Display data byte

INSTRUCTIONS

8.1

Description of the bit functions

8.1.1

Power-down mode

8.1.2

Partial screen mode

8.1.3

Y-address of DDRAM

8.1.4

Bias system

8.1.5

High voltage generator configuration

8.1.6

Temperature read-out

8.1.7

VLCD control register

8.1.8

Grey-scale register and grey-scale level

8.1.9

Direct drive mode

8.1.10

Frame frequency calibration

8.2

Reset and initialization

LIMITING VALUES

HANDLING

DC CHARACTERISTICS

TIMING

APPLICATION INFORMATION

13.1

Programming example for the PCF8820

13.2

Examples of effects on the display

13.3

High voltage generator

13.4

Application for COG

13.5

Typical system configuration

13.6

External supply of VLCDIN

BONDING PAD INFORMATION

DEVICE PROTECTION CIRCUITS

TRAY INFORMATION

DATA SHEET STATUS

DEFINITIONS

DISCLAIMERS

BARE DIE DISCLAIMER

PURCHASE OF PHILIPS I2C COMPONENTS

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