PCA9620H NXP [NXP Semiconductors], PCA9620H Datasheet - Page 25

• Manufacturer Part Number: PCA9620H
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCA9620
Product data sheet
Fig 17. Waveforms for the 1:2 multiplex drive mode with
V
V
V
state1
state2
on(RMS)
state 1
state 2
S n+1
BP0
BP1
S n
(t) = V
(t) = V
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(t) = 0.745V
Sn
Sn
(t) − V
(t) − V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
V
V
2V
V
− V
− 2V
− V
V
2V
V
− V
− 2V
− V
Rev. 1 — 9 December 2010
0 V
0 V
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
SS
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
/3
/3
/3
/3
/3
/3
BP0
BP1
/3
/3
/3
/3
/3
/3
/3
/3
/3
/3
. V
(t).
(t).
off(RMS)
(t) = 0.333V
(a) Waveforms at driver.
(b) Resultant waveforms
Universal LCD driver for low multiplex rates
at LCD segment.
LCD
T
.
fr
1
⁄
3
bias (line inversion mode)
013aaa209
state 1
state 2
LCD segments
PCA9620
© NXP B.V. 2010. All rights reserved.
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