PCF8533 查看數據表（PDF） - Philips Electronics

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PCF8533

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low multiplex rates

Product specification

PCF8533

6.4 LCD drive mode waveforms

6.4.1 STATIC DRIVE MODE

The static LCD drive mode is used when a single backplane is provided in the LCD. Backplane and segment drive

waveforms for this mode are shown in Fig.3.

handbook, full pagewidth

Tframe

VLCD

LCD segments

BP0

VSS

VLCD

Sn

VSS

state 1

(on)

state 2

(off)

Sn + 1

VLCD

VSS

(a) Waveforms at driver.

VLCD

state 1 0 V

−VLCD

VLCD

state 2 0 V

−VLCD

(b) Resultant waveforms

at LCD segment.

MGL745

Vstate1(t) = Vsn(t) − VBP0(t).

Von(rms) = VLCD.

Vstate2(t) = Vsn + 1(t) − VBP0(t).

Voff(rms) = 0 V.

1999 Jul 30

Fig.3 Static drive mode waveforms.

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