NXP Semiconductors
PCF85162
Universal LCD driver for low multiplex rates
BP0
BP1
Sn
Sn+1
state 1
state 2
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
VSS
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
VLCD
2VLCD/3
VLCD/3
0V
−VLCD/3
−2VLCD/3
−VLCD
Tfr
LCD segments
state 1
state 2
(a) Waveforms at driver.
(b) Resultant waveforms
at LCD segment.
013aaa209
Fig 8.
Vstate1(t) = VSn(t) VBP0(t).
Von(RMS) = 0.745VLCD.
Vstate2(t) = VSn(t) VBP1(t).
Voff(RMS) = 0.333VLCD.
Waveforms for the 1:2 multiplex drive mode with 1⁄3 bias
PCF85162
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 16 June 2011
© NXP B.V. 2011. All rights reserved.
12 of 46