PCF8576U-12(2001) 데이터 시트보기 (PDF) - Philips Electronics

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PCF8576U-12
(Rev.:2001)

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low multiplex rates

Product specification

PCF8576

VDD

BP0 (VDD VLCD )/2

VLCD

VDD

BP1 (VDD VLCD )/2

VLCD

VDD

Sn

VLCD

Sn 1

VDD

VLCD

Vop

Vop /2

state 1

0

Vop /2

Vop

Vop

Vop /2

state 2

0

Vop /2

Vop

T frame

LCD segments

state 1

state 2

(a) waveforms at driver

(b) resultant waveforms

at LCD segment

MBE540

Vstate1(t) = VSn(t) – VBP0(t)

Von(rms) = 0.791Vop

Vstate2(t) = VSn(t) – VBP1(t)

Voff(rms) = 0.354Vop

Fig.5 Waveforms for the 1 : 2 multiplex drive mode with 1⁄2bias (Vop = VDD − VLCD).

2001 Oct 02

10

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