PCF8579 Ver la hoja de datos (PDF) - Philips Electronics

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componentes Descripción

fabricante

PCF8579

LCD column driver for dot matrix graphic displays

Philips Electronics 

Philips Semiconductors

LCD column driver for dot matrix graphic

displays

5 BLOCK DIAGRAM

Product specification

PCF8579

VDD

V3

V4

VLCD

12 (20)

14 (22)

15 (23)

16 (24)

TEST

VSS

6 (12)

5 (11)

POWER-ON

RESET

8 (14)

A3

A2

9 (16)

10 (17)

A1

11 (18)

A0

C39 - C0

17 - 56

(30 to 33, 35 to 64, 1 to 6)

COLUMN (1)

DRIVERS

PCF8579

OUTPUT

CONTROLLER

Y DECODER

AND SENSING

AMPLIFIERS

32 x 40 BIT

DISPLAY RAM

DISPLAY

DECODER

X DECODER

SUBADDRESS

COUNTER

RAM DATA POINTER

Y

X

(9) 3

TIMING

GENERATOR (10) 4

SYNC

CLK

SCL

SDA

2 (8)

1 (7)

INPUT

FILTERS

I2C-BUS

CONTROLLER

(15, 19, 21, 25 to 29, 34)

13

n.c.

7 (13)

SA0

COMMAND

DECODER

MSA919

(1) Operates at LCD voltage levels, all other blocks operate at logic levels.

The pin numbers given in parenthesis refer to the LQFP64 package.

Fig.1 Block diagram.

1997 Apr 01

4

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