PCF8576DTSLASH2 datasheet(12/57 Pages) NXP

Part #	PCF8576DT/2

Description	Universal LCD driver for low multiplex rates

PDF	57 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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PCF8576D

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Product data sheet

Rev. 14 — 10 June 2013

12 of 57

NXP Semiconductors

PCF8576D

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. The

backplane (BPn) and segment drive (Sn) waveforms for this mode are shown in Figure 7.

(1) Vstate1(t) = VSn(t)  VBP0(t).

(2) Von(RMS) = VLCD.

(3) Vstate2(t) = VSn+1(t)  VBP0(t).

(4) Voff(RMS) = 0 V.

Fig 7.

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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