PCF85321 NXP [NXP Semiconductors], PCF85321 Datasheet - Page 8

• Manufacturer Part Number: PCF85321
• Description: Universal LCD driver for low multiplex rates
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCF8532_1
Product data sheet
7.4.1 Static drive mode
7.4 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.
V
V
V
V
Static drive mode waveforms
state1
on(RMS)
state2
off(RMS)
(t) = V
(t) = V
= V
= 0 V.
Sn
(Sn+1)
LCD
(t)
Rev. 1 — 10 February 2009
.
state 1
state 2
Sn+1
(t)
BP0
V
Sn
BP0
V
BP0
(t).
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
(b) Resultant waveforms
(a) Waveforms at driver.
at LCD segment.
Universal LCD driver for low multiplex rates
T
fr
state 1
(on)
LCD segments
mgl745
state 2
(off)
Figure
PCF8532
© NXP B.V. 2009. All rights reserved.
4.
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