PCF8545 datasheet(28/68 Pages) NXP

tên linh kiện	PCF8545

Giải thích chi tiết về linh kiện	Universal LCD driver for multiplex rates up to 1:8

PDF	68 Pages

Scroll/Zoom	100%

nhà sản xuất	NXP [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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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

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