PCF8576 Philips Semiconductors, PCF8576 Datasheet - Page 13
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PCF8576
Manufacturer Part Number
PCF8576
Description
Universal LCD driver for low multiplex rates
Manufacturer
Philips Semiconductors
Datasheet
1.PCF8576.pdf
(40 pages)
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Philips Semiconductors
1998 Feb 06
Universal LCD driver for low multiplex
rates
S n 1
S n 2
S n 3
state 1
state 2
BP2
BP0
BP1
BP3
S n
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V DD
V
V
V LCD
V op
V op
V op
V op
V
V
V
V
2V
2V
2V
2V
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
DD
op
op
op
op
op
op
op
op
Fig.8 Waveforms for the 1 : 4 multiplex drive mode (V
/3
/3
/3
/3
0
0
/3
/3
/3
/3
V
V
V
V
V
V
V
V
2V
2V
2V
2V
2V
2V
2V
2V
op
op
op
op
op
op
op
op
op
op
op
op
op
op
op
op
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
(b) resultant waveforms
(a) waveforms at driver
at LCD segment
T frame
13
op
= V
state 1
state 2
DD
MBE543
LCD segments
V
LCD
V
V
V
V
).
state1
on(rms)
state2
off(rms)
t ( )
t ( )
Product specification
=
=
=
=
0.577V
0.333V
V
V
PCF8576
S
S
n
n
t ( ) V
t ( ) V
–
–
op
op
BP0
BP1
t ( )
t ( )