pcf8566 NXP Semiconductors, pcf8566 Datasheet - Page 11

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pcf8566

Manufacturer Part Number
pcf8566
Description
Universal Lcd Driver For Low Multiplex Rates
Manufacturer
NXP Semiconductors
Datasheet

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Philips Semiconductors
1998 May 04
handbook, full pagewidth
Universal LCD driver for low multiplex
rates
S n
S n
state 1
state 2
BP2
BP0
BP1
S n
1
2
V op
V op /3
V op
V op
V op /3
V op
2V op /3
V op /3
2V op /3
V op /3
2V op /3
2V op /3
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
Fig.7 Waveforms for 1 : 3 multiplex drive mode: V
0
0
V op /3
2V op /3
V op /3
2V op /3
V op /3
2V op /3
V op /3
2V op /3
V op /3
2V op /3
V op /3
2V op /3
(a) waveforms at driver
(b) resultant waveforms
at LCD segment
T frame
11
op
state 1
state 2
= V
LCD segments
At any instant (t):
V state 1 (t) = V S
V on(rms) =
V state 2 (t) = V S
V off(rms) =
DD
V
V op
V op
LCD
9
3
n
n
= 0.333V op
.
33 = 0.638V op
(t)
(t)
MGG395
V BP0 (t)
V BP1 (t)
Product specification
PCF8566

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