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Fabricante

PC85232-1

LCD driver for low multiplex rates

NXP Semiconductors. 

NXP Semiconductors

PCF85132

LCD driver for low multiplex rates

7.4 LCD drive mode waveforms

7.4.1 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 6.

Tfr

VLCD

BP0

VSS

VLCD

Sn

LCD segments

state 1

(on)

state 2

(off)

VSS

VLCD

Sn+1

VSS

(a) Waveforms at driver.

VLCD

state 1 0 V

−VLCD

VLCD

state 2 0 V

−VLCD

(b) Resultant waveforms

at LCD segment.

Fig 6.

Vstate1(t) = VSn(t) − VBP0(t).

Von(RMS) = VLCD.

Vstate2(t) = V(Sn+1)(t) − VBP0(t).

Voff(RMS) = 0 V.

Static drive mode waveforms

013aaa207

PCF85132

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 23 November 2010

© NXP B.V. 2010. All rights reserved.

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