PCF8531U/2DA/1 View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
'PCF8531U/2DA/1' PDF : 51 Pages View PDF
NXP Semiconductors
PCF8531
34 x 128 pixel matrix driver
8. LCD waveforms and DDRAM to data mapping
The LCD waveforms and the DDRAM to display data mapping are shown in Figure 5,
Figure 6 and Figure 7.
ROW 0
R0(t)
VLCD
V2
V3
V4
V5
VSS
ROW 1
R1(t)
VLCD
V2
V3
V4
V5
VSS
COL 0
C0(t)
COL 1
C1(t)
VLCD
V2
V3
V4
V5
VSS
VLCD
V2
V3
V4
V5
VSS
VLCD
V3 − VSS
Vstate1(t)
VLCD − V2
0V
V3 − V2
VLCD
V3 − VSS
Vstate2(t)
VLCD − V2
0V
V3 − V2
frame n
0 2 4 6 8...
... 32 1 3 5 7...
(1) Vstate1(t) = C1(t) − R0(t).
(2) Vstate2(t) = C1(t) − R1(t).
Fig 5. Typical LCD driver waveforms
frame n + 1
... 33 0 2 4 6 8...
... 32 1 3 5 7...
Vstate1(t)
Vstate2(t)
V4 − V5
0V
VSS − V5
V4 − VLCD
−VLCD
V4 − V5
0V
VSS − V5
V4 − VLCD
−VLCD
... 33
mgs466
PCF8531
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 16 May 2011
© NXP B.V. 2011. All rights reserved.
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