PCA8538UG(2014) View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
MFG CO.
PCA8538UG Datasheet PDF : 107 Pages
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NXP Semiconductors
PCA8538
Automotive 102 x 9 Chip-On-Glass LCD segment driver
8.5 Display control commands
8.5.1 Command: Set-MUX-mode
The Set-MUX-mode command allows setting the multiplex drive mode.
Table 20. Set-MUX-mode - set multiplex drive mode command bit description
Bit
Symbol
Value
Description
-
R/W
0
fixed value
-
RS[1:0]
00
fixed value
7 to 3 -
0000 0
fixed value
2 to 0 M[2:0]
set multiplex drive mode
000[1]
1:9 multiplex drive mode
001
010
011
1:8 multiplex drive mode
100
1:6 multiplex drive mode
101
1:4 multiplex drive mode
110
1:2 multiplex drive mode
111
static
[1] Default value.
8.5.2 Command: Inversion-mode
The Inversion-mode command allows changing the drive scheme inversion mode.
The waveforms used to drive LCD displays (see Figure 25 on page 45 to Figure 33 on
page 53) inherently produce a DC voltage across the display cell. The PCA8538
compensates for the DC voltage by inverting the waveforms on alternate frames or
alternate lines. The choice of the compensation method is determined with INV[2:0] in
Table 21.
Table 21. Inversion-mode - inversion mode command bit description
Bit
Symbol
Value
Description
-
R/W
0
fixed value
-
RS[1:0]
00
fixed value
7 to 3 -
1011 0
fixed value
2 to 0 INV[2:0]
set inversion mode
000[1]
frame inversion mode
001
1-line inversion mode
010
2-line inversion mode
011
3-line inversion mode
100
4-line inversion mode
101
5-line inversion mode
110
6-line inversion mode
111
7-line inversion mode
[1] Default value.
PCA8538
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 26 September 2014
© NXP Semiconductors N.V. 2014. All rights reserved.
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