PCF8576C Просмотр технического описания (PDF) - Philips Electronics

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производитель

PCF8576C

Universal LCD driver for low multiplex rates

Philips Electronics 

Philips Semiconductors

Universal LCD driver for low multiplex

rates

Product specification

PCF8576C

6.4 LCD drive mode waveforms

6.4.1 STATIC DRIVE MODE

The static LCD drive mode is used when a single backplane is provided in the LCD. Backplane and segment drive

waveforms for this mode are shown in Fig.5.

T frame

V DD

LCD segments

BP0

V LCD

V DD

Sn

V LCD

state 1

(on)

state 2

(off)

Sn 1

VDD

V LCD

(a) waveforms at driver

V op

state 1

0

Vop

V op

state 2

0

Vop

(b) resultant waveforms

at LCD segment

MBE539

Vstate1(t) = VSn(t) – VBP0(t)

Von(rms) = Vop

Vstate2(t)

=

VSn

+

(t)

1

–

VBP0(t)

Voff(rms) = 0 V

1998 Jul 30

Fig.5 Static drive mode waveforms (Vop = VDD − VLCD).

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