NXP Semiconductors
VLCD
V2
ROW 17 V3/V4
V5
VSS
VLCD
V2
ROW 18 V3/V4
V5
VSS
ROW 1
VLCD
V2
V3/V4
V5
VSS
ROW 9
VLCD
V2
V3/V4
V5
VSS
ROW 2
VLCD
V2
V3/V4
V5
VSS
VLCD
V2
ROW 10 V3/V4
V5
VSS
COL 1
COL 2
VLCD
V2
V3/V4
V5
VSS
VLCD
V2
V3/V4
V5
VSS
VLCD
state 1
0.5VLCD
0.25VLCD
0
−0.25VLCD
−0.5VLCD
−VLCD
VLCD
state 2
0.5VLCD
0.25VLCD
0
−0.25VLCD
−0.5VLCD
−VLCD
12 3
frame n
frame n +1
18 1 2 3
18
Vstate(t) = VCOL(t) − VROW(t).
Fig 3. Waveforms for the 1:18 multiplex drive mode; character mode
PCF2119x
LCD controllers/drivers
state 1 (on)
state 2 (off)
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R17
R18
C1 C2 C3 C4 C5
013aaa140
PCF2119X_5
Product data sheet
Rev. 05 — 13 August 2009
© NXP B.V. 2009. All rights reserved.
11 of 79