PCF8545 datasheet(28/68 Pages) NXP

28 / 68 page

NXP Semiconductors

PCF8545

Universal LCD driver for multiplex rates up to 1:8

001aam359

BP0

BP1

BP2

BP3

BP4

BP5

BP6

BP7

Sn + 1

state 1

state 2

state 1

Tfr

frame n

frame n+1

state 2

LCD segments

VLCD

3/4 VLCD

1/4 VLCD

VSS

1/4 VLCD

3/4 VLCD

1/2 VLCD

VLCD

3/4 VLCD

1/4 VLCD

VSS

1/4 VLCD

3/4 VLCD

1/2 VLCD

VLCD

VSS

1/2 VLCD

VLCD

VSS

1/2 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

VSS

1/4 VLCD

3/4 VLCD

VLCD

(a) Waveforms at driver

(b) Resultant waveforms at LCD segment

Vstate1(t) = VSn(t) - VBP0(t). Vstate2(t) = VSn + 1(t) - VBP0(t). Von(RMS)(t) = 0.424VLCD. Voff(RMS)(t) = 0.293VLCD.

Figure 18. Waveforms for 1:8 multiplex drive mode with bias 1⁄4 and frame inversion

PCF8545

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 2 — 4 October 2021

28 / 68

PCF8545 Datasheet(PDF) 28 Page - NXP Semiconductors

PCF8545 Datasheet(HTML) 28 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

Datasheet Download

Link URL