PCA8534AH-Q900 datasheet(11/44 Pages) NXP

Part #	PCA8534AH-Q900

Description	Universal LCD driver for low multiplex rates

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Manufacturer	NXP [NXP Semiconductors]

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PCA8534A_2

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Product data sheet

Rev. 02 — 1 June 2010

11 of 44

NXP Semiconductors

PCA8534A

Universal LCD driver for low multiplex rates

Vstate1(t) = VSn(t) − VBP0(t).

Von(RMS) = 0.745VLCD.

Vstate2(t) = VSn(t) − VBP1(t).

Voff(RMS) = 0.333VLCD.

Fig 6.

Waveforms for the 1:2 multiplex drive mode with 1

⁄

3 bias

mgl747

state 1

BP0

(a) Waveforms at driver.

(b) Resultant waveforms

at LCD segment.

LCD segments

state 2

BP1

state 1

state 2

VSS

VLCD

2VLCD / 3

VLCD / 3

VSS

VLCD

2VLCD / 3

VLCD / 3

VSS

VLCD

2VLCD / 3

VLCD / 3

0 V

VLCD

2VLCD / 3

−2VLCD / 3

VLCD / 3

−VLCD / 3

−VLCD

0 V

VLCD

2VLCD / 3

−2VLCD / 3

VLCD / 3

−VLCD / 3

S

n

S

n+1

Tfr

VSS

VLCD

2VLCD / 3

VLCD / 3

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PCA8534AH-Q900 Datasheet(PDF) 11 Page - NXP Semiconductors

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