PCF8562TT/2(2008) 查看數據表（PDF） - NXP Semiconductors.

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PCF8562TT/2
(Rev.:2008)

Universal LCD driver for low multiplex rates

NXP Semiconductors. 

NXP Semiconductors

PCF8562

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 4.

Tfr

VLCD

BP0

VSS

VLCD

Sn

LCD segments

state 1

(on)

state 2

(off)

VSS

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.

(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 4. Static drive mode waveforms

mgl745

PCF8562_3

Product data sheet

Rev. 3 — 2 December 2008

© NXP B.V. 2008. All rights reserved.

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