PCF8576CT/S480/1,1 NXP Semiconductors, PCF8576CT/S480/1,1 Datasheet - Page 15

• Manufacturer Part Number: PCF8576CT/S480/1,1
• Description: LCD Drivers Universal LCD Driver Low Multiplex Rates
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8576C
Product data sheet
7.4.2 1:2 Multiplex drive mode
When two backplanes are provided in the LCD, the 1:2 multiplex mode applies. The
PCF8576C allows the use of
Fig 10. Waveforms for the 1:2 multiplex drive mode with
V
V
V
V
state1
on(RMS)
state2
off(RMS)
Sn+1
state 1
state 2
(t) = V
(t) = V
BP0
BP1
S n
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= 0.354V
= 0.791V
Sn
Sn
(t)  V
(t)  V
V
V
V
V
V
V
V
V
V
V
V
V
−V
−V
V
V
−V
−V
0 V
0 V
Rev. 11 — 30 March 2012
LCD
LCD
SS
LCD
LCD
SS
LCD
SS
LCD
SS
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
/ 2
/ 2
/ 2
/ 2
BP0
BP1
.
/ 2
/ 2
(t).
(t).
1
⁄
2
bias or
1
(a) Waveforms at driver.
(b) Resultant waveforms
⁄
3
bias (see
Universal LCD driver for low multiplex rates
at LCD segment.
T
fr
Figure 10
1
⁄
2
bias
and
state 1
state 2
mgl746
LCD segments
Figure
PCF8576C
© NXP B.V. 2012. All rights reserved.
11).
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