PCF8576U/5(2001) View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

PCF8576U/5
(Rev.:2001)

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low multiplex rates

Product specification

PCF8576

BP0

BP1

Sn

Sn 1

state 1

state 2

VDD

VDD Vop /3

VDD 2Vop /3

VLCD

VDD

VDD Vop /3

VDD 2Vop /3

VLCD

VDD

VDD Vop /3

VDD 2Vop /3

VLCD

VDD

VDD Vop /3

VDD 2Vop /3

VLCD

Vop

2Vop /3

Vop /3

0

Vop /3

2Vop /3

Vop

Vop

2Vop /3

Vop /3

0

Vop /3

2Vop /3

Vop

T frame

LCD segments

state 1

state 2

(a) waveforms at driver

(b) resultant waveforms

at LCD segment

MBE541

Vstate1(t) = VSn(t) – VBP0(t)

Von(rms) = 0.745Vop

Vstate2(t) = VSn(t) – VBP1(t)

Voff(rms) = 0.333Vop

Fig.6 Waveforms for the 1 : 2 multiplex drive mode with 1⁄3bias (Vop = VDD − VLCD).

2001 Oct 02

11

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