pcf8536 NXP Semiconductors, pcf8536 Datasheet - Page 30

• Manufacturer Part Number: pcf8536
• Description: Universal Lcd Driver For Low Multiplex Rates Including A 6 Channel Pwm Generator
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF8536
Product data sheet
Fig 16. Waveforms for 1:6 multiplex drive mode with bias
state 1
state 2
Sn + 1
BP0
BP1
BP2
BP3
BP4
BP5
Sn
V
state1
-2V
-2V
2V
2V
2V
2V
2V
2V
2V
2V
2V
2V
-V
-V
V
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
(t) = V
8.5.2 1:6 Multiplex drive mode
-V
-V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
LCD
SS
SS
SS
SS
SS
SS
SS
SS
SS
SS
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
/ 3
Sn
(t)  V
When six backplanes are provided in the LCD, the 1:6 multiplex drive mode applies. The
PCF8536 allows use of
Figure
Section
BP0
(t). V
17. These waveforms are drawn for the case of line inversion (see
8.1.4.2).
state2
(t) = V
(b) Resultant waveforms at LCD segment
All information provided in this document is subject to legal disclaimers.
Sn +1
Universal LCD low multiplex driver with 6 channel PWM generator
(a) Waveforms at driver
(t)  V
Rev. 1 — 6 October 2011
1
⁄
3
bias or
BP0
T
(t). V
fr
on(RMS)
1
⁄
1
4
⁄
3
bias in this mode as shown in
and line inversion
(t) = 0.509V
LCD
. V
off(RMS)
(t) = 0.333V
state 1
Figure 16
LCD
PCF8536
LCD segments
© NXP B.V. 2011. All rights reserved.
.
001aal399
and
state 2
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