PCF8536AT/1 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCF8536AT/1
NXP Semiconductors.
'PCF8536AT/1' PDF : 74 Pages View PDF
NXP Semiconductors
PCF8536
Universal LCD low multiplex driver with 6 channel PWM generator
8.5.2 1:6 Multiplex drive mode
When six backplanes are provided in the LCD, the 1:6 multiplex drive mode applies. The
PCF8536 allows use of 1⁄3 bias or 1⁄4 bias in this mode as shown in Figure 16 and
Figure 17. These waveforms are drawn for the case of line inversion (see
Section 8.1.4.2).
Tfr
BP0
VLCD
2VLCD / 3
VLCD / 3
VSS
LCD segments
state 1
state 2
BP1
VLCD
2VLCD / 3
VLCD / 3
VSS
BP2
VLCD
2VLCD / 3
VLCD / 3
VSS
BP3
VLCD
2VLCD / 3
VLCD / 3
VSS
BP4
VLCD
2VLCD / 3
VLCD / 3
VSS
BP5
VLCD
2VLCD / 3
VLCD / 3
VSS
VLCD
Sn
2VLCD / 3
VLCD / 3
VSS
Sn + 1
VLCD
2VLCD / 3
VLCD / 3
VSS
VLCD
state 1
2VLCD / 3
VLCD / 3
VSS
-VLCD / 3
-2VLCD / 3
-VLCD
VLCD
state 2
2VLCD / 3
VLCD / 3
VSS
-VLCD / 3
-2VLCD / 3
-VLCD
(a) Waveforms at driver
(b) Resultant waveforms at LCD segment
001aal399
Vstate1(t) = VSn(t) VBP0(t). Vstate2(t) = VSn +1 (t) VBP0(t). Von(RMS)(t) = 0.509VLCD. Voff(RMS)(t) = 0.333VLCD.
Fig 16. Waveforms for 1:6 multiplex drive mode with bias 1⁄3 and line inversion
PCF8536
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 6 October 2011
© NXP B.V. 2011. All rights reserved.
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