PCF8576C datasheet(13/57 Pages) NXP

部件名	PCF8576C

功能描述	Universal LCD driver for low multiplex rates

PDF	57 Pages

Scroll/Zoom	100%

制造商	NXP [NXP Semiconductors]

网页	http://www.nxp.com

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13 / 57 page

PCF8576C

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Product data sheet

Rev. 10 — 22 July 2010

13 of 57

NXP Semiconductors

PCF8576C

Universal 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 8.

Vstate1(t) = VSn(t) − VBP0(t).

Von(RMS) = VLCD.

Vstate2(t) = VSn+1(t) − VBP0(t).

Voff(RMS) = 0 V.

Fig 8.

Static drive mode waveforms

mgl745

VSS

VLCD

VSS

VLCD

VSS

VLCD

−VLCD

VLCD

state 1

0 V

BP0

Sn+1

state 2

0 V

(a) Waveforms at driver.

(b) Resultant waveforms

at LCD segment.

LCD segments

state 1

(on)

state 2

(off)

Tfr

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