PCF8576C Philips Semiconductors, PCF8576C Datasheet - Page 12

• Manufacturer Part Number: PCF8576C
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1998 Jul 30
Universal LCD driver for low multiplex
rates
V
V
V
V
state1
on(rms)
state2
off(rms)
t ( )
t ( )
=
=
=
=
0.745V
0.333V
V
V
S
S
n
n
t ( ) V
t ( ) V
–
–
op
op
Fig.7 Waveforms for the 1 : 2 multiplex drive mode with
BP0
BP1
t ( )
t ( )
S n 1
state 1
state 2
BP0
BP1
S n
V
V
V
V
V DD
V
V LCD
V DD
V
V LCD
V DD
V
V LCD
V DD
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
op
op
op
op
op
op
op
op
/3
0
/3
/3
0
/3
/3
/3
/3
/3
V
V
V
V
2V
2V
2V
2V
op
op
op
op
op
op
op
op
/3
/3
/3
/3
/3
/3
/3
/3
(b) resultant waveforms
(a) waveforms at driver
12
at LCD segment
T frame
1
3
bias (V
MBE541
state 1
state 2
LCD segments
op
= V
DD
V
LCD
Product specification
PCF8576C
).