PCF8534H 查看數據表（PDF） - Philips Electronics

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PCF8534H

Universal LCD driver for low multiplex rat

Philips Electronics 

NXP Semiconductors

PCF8534

Universal LCD driver for low multiplex rates

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 Figure 4.

BP0

VLCD

VSS

VLCD

Sn

VSS

Tframe

LCD segments

state 1

(on)

state 2

(off)

Sn+1

VLCD

VSS

(a) Waveforms at driver.

VLCD

state 1 0 V

−VLCD

VLCD

state 2

0V

−VLCD

(b) Resultant waveforms

at LCD segment.

Vstate1(t) = Vsn(t) − VBP0(t).

VON(rms) = VLCD.

Vstate2(t) = V(sn + 1)(t) − VBP0(t).

VOFF(rms) = 0 V.

Fig 4. Static drive mode waveforms

mgl745

PCF8534_0

Preliminary datasheet

Rev. 00.05 — 20 February 2007

© NXP B.V. 2007. All rights reserved.

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