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PCF8531 Datasheet(PDF) 8 Page - NXP Semiconductors

Part # PCF8531
Description  34 x 128 pixel matrix driver
PDF  44 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8531 Datasheet(HTML) 8 Page - NXP Semiconductors

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2000 Feb 11
8
Philips Semiconductors
Product specification
34
× 128 pixel matrix driver
PCF8531
8.16
LCD waveforms and DDRAM to data mapping
The LCD waveforms and the DDRAM to display data mapping are shown in Figs 2, 3 and 4.
MGS466
ROW 0
R0 (t)
ROW 2
R2 (t)
COL 0
C0 (t)
COL 1
C1 (t)
0 V
0 V
V3 − VSS
frame n
frame n
+ 1
0246 8...
1 3 5 7...
... 33
... 32
0246 8...
1 3 5 7...
... 33
... 32
Vstate1(t)
Vstate1(t)
Vstate2(t)
VLCD
V2
V3
V4
V5
VSS
VLCD
V2
V3
V4
V5
VSS
VLCD
V2
V3
V4
V5
VSS
VLCD
V2
V3
V4
V5
VSS
VLCD
VLCD − V2
V4 − V5
VSS − V5
V4 − VLCD
V3 − V2
−VLCD
0 V
0 V
V3 − VSS
Vstate2(t)
VLCD
VLCD − V2
V4 − V5
V4 − VLCD
V3 − V2
VSS − V5
−VLCD
Fig.2 Typical LCD driver waveforms.
Vstate1(t) = C1(t) − R0(t).
Vstate2(t) = C1(t) − R2(t).



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