PCF8576DU/2DA/2 データシートの表示（PDF） - Philips Electronics

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PCF8576DU/2DA/2

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low

multiplex rates

Product specification

PCF8576D

handbook, full pagewidth

BP0

BP1

Sn

Sn + 1

state 1

state 2

VLCD

2VLCD/3

VLCD/3

VSS

VLCD

2VLCD/3

VLCD/3

VSS

VLCD

2VLCD/3

VLCD/3

VSS

VLCD

2VLCD/3

VLCD/3

VSS

VLCD

2VLCD/3

VLCD/3

0V

−VLCD/3

−2VLCD/3

−VLCD

VLCD

2VLCD/3

VLCD/3

0V

−VLCD/3

−2VLCD/3

−VLCD

Tframe

LCD segments

state 1

state 2

(a) Waveforms at driver.

(b) Resultant waveforms

at LCD segment.

MGL747

Vstate1(t) = VSn(t) – VBP0(t)

Von(rms) = 0.745VLCD

Vstate2(t) = VSn(t) – VBP1(t)

Voff(rms) = 0.333VLCD

Fig.8 Waveforms for the 1 : 2 multiplex drive mode with 1⁄3 bias.

2004 Dec 22

13

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