NXP Semiconductors
PCF2119x
LCD controllers/drivers
ROW 17
ROW 18
ROW 1 to 16
VLCD
2/3
1/3
VSS
VLCD
2/3
1/3
VSS
VLCD
2/3
1/3
VSS
COL 1 ON/OFF
COL 2 ON/OFF
COL 3 ON/OFF
COL 4 ON/OFF
VLCD
2/3
1/3
VSS
VLCD
2/3
1/3
VSS
VLCD
2/3
1/3
VSS
VLCD
2/3
1/3
VSS
state 1
VLCD
0.66VLCD
0.33VLCD
0
−0.33VLCD
−0.66VLCD
−VLCD
state 2
VLCD
0.66VLCD
0.33VLCD
0
−0.33VLCD
−0.66VLCD
−VLCD
state 3
VLCD
0.66VLCD
0.33VLCD
0
−0.33VLCD
−0.66VLCD
−VLCD
frame n
frame n +1
only icons are
driven (MUX 1: 2)
state 1 (ON)
state 2 (OFF)
state 3 (OFF)
COL 2
COL 1
013aaa142
Fig 6.
state(n) marks intersection(row(x),col(n)) of pixel(x,n)
Vstate(n)(t) = VCOL(n)(t) − VROW(x)(t).
Vstate1(t) = VCOL1(t) − VROW17(t).
Vstate2(t) = VCOL2(t) − VROW17(t).
Vstate3(t) = VCOL3(t) − VROW1 to 16(t).
Waveforms for the 1:2 multiplex drive mode with 4 bias levels; icon mode
PCF2119X
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 9 — 14 April 2011
© NXP B.V. 2011. All rights reserved.
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