pcf8534 NXP Semiconductors, pcf8534 Datasheet - Page 9

• Manufacturer Part Number: pcf8534
• Description: Universal Driver Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8534_0
Preliminary datasheet
6.4.1 Static drive mode
6.4 LCD drive mode waveforms
The static LCD drive mode is used when a single backplane is provided in the LCD.
Backplane and segment drive waveforms for this mode are shown in
Fig 4. Static drive mode waveforms
V
V
V
V
state1
ON(rms)
state2
OFF(rms)
(t) = V
(t) = V
= V
= 0 V.
LCD
sn
(sn + 1)
(t) − V
Rev. 00.05 — 20 February 2007
.
state 1
state 2
S
(t) − V
n+1
BP0
BP0
S
n
(t).
BP0
−V
−V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
(t).
LCD
LCD
LCD
SS
SS
SS
0 V
0 V
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
Universal LCD driver for low multiplex rates
T
frame
state 1
(on)
LCD segments
mgl745
state 2
(off)
Figure
PCF8534
© NXP B.V. 2007. All rights reserved.
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