pcf8566 NXP Semiconductors, pcf8566 Datasheet - Page 12
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pcf8566
Manufacturer Part Number
pcf8566
Description
Universal Lcd Driver For Low Multiplex Rates
Manufacturer
NXP Semiconductors
Datasheet
1.PCF8566.pdf
(40 pages)
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Philips Semiconductors
1998 May 04
handbook, full pagewidth
Universal LCD driver for low multiplex
rates
S n
S n
Sn
S n
state 1
state 2
BP2
BP3
BP0
BP1
1
2
3
V op
V op /3
2V op /3
V op
V op
V op /3
2V op /3
V op
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
V DD
V DD
V DD
V LCD
V DD
V DD
V DD
V LCD
2V op /3
V op /3
2V op /3
V op /3
0
0
Fig.8 Waveforms for 1 : 4 multiplex drive mode: V
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
V op /3
2V op /3
V op /3
2V op /3
(b) resultant waveforms
(a) waveforms at driver
at LCD segment
T frame
12
op
= V
DD
state 1
state 2
At any instant (t):
V state 1 (t) = V S n (t)
V on(rms) =
V state 2 (t) = V S
V off(rms) =
V
LCD.
LCD segments
V op
V op
3
3
Product specification
n
= 0.333V op
3 = 0.577V op
(t)
MGG396
PCF8566
V BP0 (t)
V BP1 (t)