NXP Semiconductors
PCF8536
Universal LCD low multiplex driver with 6 channel PWM generator
BP0
VLCD
3/4 VLCD
1/4 VLCD
VSS
BP1
BP2
BP3
BP4
BP5
BP6
BP7
Sn
Sn + 1
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
3/4 VLCD
1/4 VLCD
VSS
VLCD
1/2 VLCD
VSS
VLCD
1/2 VLCD
VSS
state 1
state 2
VLCD
3/4 VLCD
1/2 VLCD
1/4 VLCD
VSS
1/4 VLCD
1/2 VLCD
3/4 VLCD
VLCD
VLCD
3/4 VLCD
1/2 VLCD
1/4 VLCD
VSS
1/4 VLCD
1/2 VLCD
3/4 VLCD
VLCD
Tfr
frame n
Tfr
frame n+1
LCD segments
state 1
state 2
(a) Waveforms at driver
(b) Resultant waveforms at LCD segment
001aam359
Vstate1(t) = VSn(t) VBP0(t). Vstate2(t) = VSn + 1(t) VBP0(t). Von(RMS)(t) = 0.424VLCD. Voff(RMS)(t) = 0.293VLCD.
Fig 19. Waveforms for 1:8 multiplex drive mode with bias 1⁄4 and frame 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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