PCF8579H View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCF8579H

LCD column driver for dot matrix graphic displays

NXP Semiconductors. 

NXP Semiconductors

PCF8579

LCD column driver for dot matrix graphic displays

Table 5. Discrimination ratios

Discrimination

ratios

Multiplex rate

1:8

V-----o-V--f-f-o--(-p-R--e-M-r---S---)

0.297

V-----o---n--(--R----M----S---)

Voper

0.430

D = V-V----o-o--fn-f--(-(-R-R--M-M----SS---))

1.447

V-----o---p--e---r

Vth

3.370

1:16

0.245

0.316

1.291

4.080

Figure 5 shows the values of Table 4 as graphs.

1:24

0.214

0.263

1.230

4.680

1.0

Vbias

Voper

0.8

0.6

0.4

0.2

V2/Voper

V3/Voper

V4/Voper

V5/Voper

msa838

0

1:8

1:16

1:24

1:32

multiplex rate

Fig 5.

Vbias = V2, V3, V4, V5; see Table 4.

Vbias/Voper as a function of the multiplex rate

1:32

0.193

0.230

1.196

5.190

PCF8579_5

Product data sheet

Rev. 05 — 11 May 2009

© NXP B.V. 2009. All rights reserved.

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